WO2009122863A1 - Système d’affichage d’image et programme d’affichage d’image - Google Patents

Système d’affichage d’image et programme d’affichage d’image Download PDF

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Publication number
WO2009122863A1
WO2009122863A1 PCT/JP2009/054427 JP2009054427W WO2009122863A1 WO 2009122863 A1 WO2009122863 A1 WO 2009122863A1 JP 2009054427 W JP2009054427 W JP 2009054427W WO 2009122863 A1 WO2009122863 A1 WO 2009122863A1
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WIPO (PCT)
Prior art keywords
pixels
liquid crystal
display
image
image data
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Ceased
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PCT/JP2009/054427
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English (en)
Japanese (ja)
Inventor
正行 中澤
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Konica Minolta Medical and Graphic Inc
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Konica Minolta Medical and Graphic Inc
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas

Definitions

  • the present invention relates to an image display system and an image display program for displaying an image on a monochrome liquid crystal display means.
  • radiographs taken by medical diagnostic apparatuses such as X-ray diagnostic apparatuses, MRI (Magnetic Resonance Imaging) diagnostic apparatuses, and various CT (Computed Tomography) tomographic apparatuses are usually used. It is recorded on a light transmissive image recording film such as an X-ray film or other film photosensitive material, and is reproduced as a light transmissive image.
  • the film on which the diagnostic image is reproduced is set in an observation device called a schaukasten, and is observed in a state of being irradiated with light from the back, and a diagnosis of the presence or absence of a lesion is performed.
  • CRT Cathode Ray Tube
  • LCD Liquid Crystal Display liquid crystal display
  • the image data of a monochrome image captured by a medical diagnostic apparatus in particular has a large number of pixels of the original image data, and when output as it is, the entire image cannot be displayed on one screen.
  • the conventional monochrome liquid crystal display means a plurality of sub-pixels constituting one pixel of the monitor are regarded as one unit of gradation expression, and the original image data is thinned out so that the entire image can be adjusted to fit on one screen.
  • the number of gradations (display gradations) that can be expressed by the sub-pixels of the monitor is 8 bits (256 gradations). The image cannot be displayed.
  • Patent Document 1 relates to a color display device having a plurality of color light sources, and has a disadvantage that the configuration is complicated because lighting on / off of the light sources is controlled in a time-sharing manner.
  • the number of display gradations is 8 bits (256 gradations) if a monochrome image is to be displayed at a high resolution, and the resolution is low if the display gradation of a monochrome image is multiple gradations.
  • the number of display gradations is 8 bits (256 gradations) if a monochrome image is to be displayed at a high resolution, and the resolution is low if the display gradation of a monochrome image is multiple gradations.
  • An object of the present invention is to provide an image display system and an image display program capable of switching between normal-resolution and multi-gradation image display and displaying an optimal image according to the situation. It is.
  • An image display system for displaying an image on a monochrome liquid crystal display means having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction, Display data generating means for generating display data based on the original image data; Liquid crystal driving means capable of driving the monochrome liquid crystal display means for each of the sub-pixels; When displaying an image on the monochrome liquid crystal display unit according to a ratio between the number of pixels of the display data generated by the display data generation unit and the number of pixels of the original image data, the pixels are grayscaled.
  • Drive control means for controlling the liquid crystal drive means so as to switch between driving the monochrome liquid crystal display means as one unit of expression or driving the monochrome liquid crystal display means using the sub-pixel as one unit of gradation expression; It is characterized by having.
  • the present invention also provides: An image display system capable of displaying images of different image types on a monochrome liquid crystal display means having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction, Display data generating means for generating display data based on the original image data; Liquid crystal driving means for driving the monochrome liquid crystal display means with the pixel or the sub-pixel as a unit based on the display data; Drive control means for controlling the liquid crystal drive means, The drive control means sets the pixel as one unit of gradation expression or sets the sub-pixel as one unit of gradation expression according to the ratio between the number of pixels of the display data and the number of pixels of the original image data. Whether to switch the pixel as one unit of gradation expression regardless of the ratio between the number of pixels of the display data and the number of pixels of the original image data is switched according to the image type.
  • the liquid crystal driving means is controlled.
  • the present invention also provides: An image display system for displaying at least one of an image based on monochrome image data and an image based on color image data on a monochrome liquid crystal display means having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction.
  • Display data generating means for generating display data based on the original image data;
  • Liquid crystal driving means for driving the monochrome liquid crystal display means with the pixel or the sub-pixel as a unit based on the display data;
  • Drive control means for controlling the liquid crystal drive means, In the case where the original image data is the monochrome image data, and the original image data is reduced and the entire image is displayed on the monochrome liquid crystal display means, the drive control means sets the sub-pixel to gradation
  • the liquid crystal driving means is controlled to drive the monochrome liquid crystal display means as one unit of expression, and when the original image data is the color image data, the monochrome liquid crystal is used with the pixel as one unit of gradation expression.
  • the liquid crystal driving means is controlled so as to drive the display means.
  • the present invention also provides: An image display system for displaying at least one of an image based on monochrome image data and an image based on color image data on a monochrome liquid crystal display means having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction.
  • Display data generating means for generating display data based on the original image data;
  • Liquid crystal driving means for driving the monochrome liquid crystal display means with the pixel or the sub-pixel as a unit based on the display data;
  • Drive control means for controlling the liquid crystal drive means,
  • the drive control unit is configured to display the pixels in a gradation expression according to a ratio between the number of pixels of the display data and the number of pixels of the original image data.
  • the liquid crystal driving means is controlled to switch between driving the monochrome liquid crystal display means as a unit or driving the monochrome liquid crystal display means using the sub-pixel as one unit of gradation expression, and the original image data is
  • the monochrome liquid crystal display means is driven with the pixel as one unit of gradation expression regardless of the ratio between the number of pixels of the display data and the number of pixels of the original image data.
  • the liquid crystal driving means is controlled.
  • the present invention also provides: An image display program having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction and displaying an image on a monochrome liquid crystal display means that can be driven for each sub-pixel, A display data generation function for generating display data based on the original image data; When the monochrome liquid crystal display means displays an image according to the ratio between the number of pixels of the display data generated by the display data generation function and the number of pixels of the original image data, the pixels are grayscaled.
  • the present invention also provides: An image display program having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction and capable of displaying images of different image types on a monochrome liquid crystal display means that can be driven for each sub-pixel, A display data generation function for generating display data based on the original image data; When displaying an image on the monochrome liquid crystal display means, the pixel is set as one unit of gradation expression or the sub-pixel is set according to the ratio between the number of pixels of the display data and the number of pixels of the original image data. Whether to change the unit of gradation expression or whether the pixel is set to one unit of gradation expression regardless of the ratio between the number of pixels of the display data and the number of pixels of the original image data.
  • a drive control function that switches according to type, It is characterized by having a computer realize.
  • the present invention also provides: At least one of an image based on monochrome image data and an image based on color image data on a monochrome liquid crystal display means having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction and capable of being driven for each of the sub-pixels
  • An image display program for displaying one,
  • a display data generation function for generating display data based on the original image data;
  • the sub-pixel is regarded as one unit of gradation expression.
  • the present invention also provides: At least one of an image based on monochrome image data and an image based on color image data on a monochrome liquid crystal display means having a plurality of pixels composed of a plurality of sub-pixels arranged in a certain direction and capable of being driven for each of the sub-pixels
  • An image display program for displaying one,
  • a display data generation function for generating display data based on the original image data;
  • the monochrome liquid crystal display uses the pixel as one unit of gradation expression according to the ratio between the number of pixels of the display data and the number of pixels of the original image data.
  • a drive control function for driving the monochrome liquid crystal display means using the pixels as a unit of gradation expression It is characterized by having a computer realize.
  • the resolution is increased by treating each sub-pixel as one unit of gradation expression.
  • a pixel composed of a plurality of sub-pixels is treated as one unit of gradation expression, so that multiple gradations can be obtained.
  • either the pixel or the sub-pixel is switched as one unit of gradation expression according to the ratio between the number of pixels of the display data and the number of pixels of the original image data.
  • either a pixel or a sub-pixel is switched as one unit of gradation expression according to the image type.
  • the original image data image is reduced and the entire image is displayed on the monochrome liquid crystal display means, for example, a CT image, an MR image
  • the pixels are grayscaled regardless of the display magnification (ratio between the number of pixels of the display data and the number of pixels of the original image data).
  • the display can be performed as one unit of expression.
  • the processing speed can be increased.
  • CT images and MR images are often required to switch images of a large number of slices, which is preferable because the processing speed is higher than the resolution and the number of gradations.
  • either the pixel or the sub-pixel is switched as one unit of gradation expression depending on whether the original image data is monochrome image data or color image data. Therefore, for a monochrome image having a relatively large number of pixels in the original image data, the image of the original image data is reduced so that the entire image is displayed on the monochrome liquid crystal display means, and the number of pixels in the original image data is relatively small.
  • a color image can be displayed with a pixel as one unit of gradation expression regardless of the display magnification (ratio of the number of pixels of the display data and the number of pixels of the original image data).
  • the processing speed can be increased. For example, CT images and MR images are often required to switch images of a large number of slices, which is preferable because the processing speed is higher than the resolution and the number of gradations.
  • 1 is a block diagram showing a schematic configuration of an image display system in the present embodiment. It is explanatory drawing which shows the relationship between a pixel and a sub pixel. It is explanatory drawing which showed typically the process in which original image data was reduced by thinning-out processing. It is explanatory drawing which showed typically the process in which original image data was reduced by thinning-out processing. It is explanatory drawing explaining the 1st reduction method. It is explanatory drawing which shows typically the data for a display obtained by the 1st reduction method. It is explanatory drawing explaining the 2nd reduction method. It is explanatory drawing which shows typically the display data obtained by the 2nd reduction method. It is explanatory drawing explaining the 3rd reduction method.
  • FIG. It is the table
  • FIG. 1 is a principal block diagram showing a configuration example of an image display system in the present embodiment.
  • the image display system 100 is connected to the image generation apparatus 1 via a communication network (not shown) such as a LAN (Local Area Network) or a WAN (Wide Area Network), and is generated by the image generation apparatus 1.
  • a communication network such as a LAN (Local Area Network) or a WAN (Wide Area Network)
  • original image data is transmitted.
  • the image generation apparatus 1 includes, for example, an endoscopic image apparatus, an ultrasonic image apparatus, an MRI (Magnetic Resonance Imaging) apparatus, a CR (Computed Radiography) apparatus, a CT (Computed Tomographic), an MRT (Magnetic Resonance Imaging), and a breast image generation.
  • An apparatus mammography
  • an X-ray image apparatus such as an FPD (Flat Panel Detector), or the like. Note that the type and the like of the image generation device 1 are not limited to those exemplified here.
  • DICOM Digital Image and Communication Communications in Medicine
  • DICOM MWM Mode Worklist Management
  • DICOM MPPS Mode Performed Procedure Step
  • the image display system 100 includes an image processing unit 3 that performs display data generation processing for generating display data based on original image data generated by the image generation device 1, and display data generated by the image processing unit 3.
  • the image display means 5 for displaying an image based on the above, the input unit 7 for inputting various instructions, and the like are provided.
  • the image display means 5 is, for example, a monitor that displays medical diagnostic images. As shown in FIG. 1, the image display means 5 drives a liquid crystal panel (LCD (Liquid Crystal Display)) 51 as a monochrome liquid crystal display means for displaying a monochrome image based on display data, and the liquid crystal panel 51.
  • LCD Liquid Crystal Display
  • a liquid crystal driving unit 52 is provided.
  • FIG. 2 is an explanatory diagram schematically showing the pixels constituting the liquid crystal panel 51.
  • four pixels A, B, C, and D are extracted and shown.
  • the pixels A, B, C, and D portions surrounded by thick lines in FIG. 2 of the liquid crystal panel 51 are arranged in a certain direction (vertical direction in FIG. 2).
  • the three sub-pixels a, b, and c (the portion surrounded by the alternate long and short dash line in FIG. 2).
  • the liquid crystal driving unit 52 is liquid crystal driving means for driving the liquid crystal panel 51 with one pixel A, B, C, D or sub-pixels a, b, c of the liquid crystal panel 51 as one unit based on display data. That is, when the display data with one pixel of the liquid crystal panel 51 as one unit is sent from the display unit control unit 32 of the image processing unit 3, the liquid crystal driving unit 52 sets one pixel as one unit of gradation expression. The liquid crystal panel 51 is driven. Also, when display data is sent from the display means control unit 32 with each sub pixel a, b, c of the liquid crystal panel 51 as one unit, each sub pixel a, b, c is represented as one unit of gradation expression. As a result, the liquid crystal panel 51 is driven.
  • the liquid crystal panel 51 When the liquid crystal panel 51 is driven using one pixel of the liquid crystal panel 51 as one unit of gradation expression, one pixel is expressed by combining three sub-pixels a, b, and c constituting one pixel.
  • the liquid crystal panel 51 can express 8-bit gradation (256 gradations) as gradation characteristics, and the number of gradations that can be expressed by the sub-pixel is 8 bits ( 256 gradations), an input signal value is assigned to each of the sub-pixels a, b, and c, and the three sub-pixels a, b, and c are driven in combination to express one pixel.
  • gradation expression exceeding the gradation characteristics of the liquid crystal panel 51 (the number of gradations that can be expressed by the sub-pixels a, b, and c) is possible.
  • the number of gradations that can be expressed by the sub-pixels a, b, and c is possible.
  • the number of gradations more than twice the number of gradations that can be expressed by the subpixel can be expressed.
  • each sub-pixel a, b, c is driven independently.
  • one pixel is composed of three sub-pixels a, b, and c, as compared with the case where the liquid crystal panel 51 is driven using one pixel of the liquid crystal panel 51 as one unit of gradation expression. Three times the resolution can be realized.
  • gradation expression cannot be performed by combining the sub-pixels a, b, and c, gradation expression with the number of gradations that can be expressed by the sub-pixel (in this embodiment, 8 bits (256 gradations)). Can stay.
  • the type of the liquid crystal panel 51 applicable to the present embodiment is not particularly limited, and the TN (Twisted ⁇ Nematic) method, STN (Super Twisted Nematic) method, MVA is also used for the method in which the liquid crystal driving unit 52 drives the liquid crystal panel 51.
  • TN Transmission ⁇ Nematic
  • STN Super Twisted Nematic
  • MVA Magnetic Angel Deformation
  • Various drive systems such as a (Multi-domain / Vertical / Alignment) system and an IPS (In-Plane / Switching) system can be applied.
  • the image display means 5 includes a backlight 53 that irradiates light to the liquid crystal panel 51 from the non-observation side.
  • the backlight 53 may be anything as long as it can provide light sufficient to illuminate the liquid crystal panel 51.
  • an LED, a cold cathode fluorescent tube, a hot cathode fluorescent tube, and other light emitting elements can be applied.
  • the maximum luminance on the observation side is preferably 300 to 5000 cd / m 2 so that it can be suitably used for a monitor for medical purposes.
  • the input unit 7 includes a keyboard having character input keys, numeric input keys, and various function keys (not shown), a pointing device such as a mouse, and the like. Is output to the main body control unit 31 as an input signal.
  • the input unit 7 inputs a display magnification of an image to be displayed on the liquid crystal panel 51 of the image display unit 5 by a user such as a doctor, and selection / designation of a target portion when performing enlarged display / trimming. Functions as a means to
  • a pressure-sensitive (resistive film pressure) touch panel (not shown) in which transparent electrodes are arranged in a grid is formed on the screen of the liquid crystal panel 51 of the image display means 5, and the liquid crystal panel 51, the input unit 7, May be made to function as a means for inputting selection / designation of a target portion when performing enlarged display / trimming.
  • the touch panel is configured to detect the XY coordinates of the power point pressed by a finger, a touch pen, or the like as a voltage value and output the detected position signal to the main body control unit 31 as an operation signal.
  • the image processing means 3 includes a main body control section 31 that controls the image processing means 3 in an integrated manner, a display means control section 32 that controls the image display means 5, a storage section 33, and the like. It is.
  • the storage unit 33 includes a program storage unit 34, a RAM (Random Access Memory) 35, and the like.
  • the program storage unit 34 is a memory that stores information in a readable manner.
  • the program storage unit 34 generates display data based on the original image data, or according to the display magnification when the image is displayed on the image display means 5, the image type of the original image data, or the like.
  • Various programs such as an image display program for appropriately displaying an image on the image display means 5 such as switching the display method are stored.
  • the RAM 35 is a volatile memory for storing various types of information, and has a storage area for temporarily storing various types of information and a work area for developing various programs, data, and the like (none of which are shown).
  • the main body control unit 31 acquires the original image data from the image generation device 1
  • the main image control unit 31 is temporarily stored in the storage area of the RAM 35.
  • the means for storing the original image data is not limited to the RAM 35, and the image processing means 3 may be provided with a storage unit for storing the original image data.
  • the main body control unit 31 includes a CPU (Central Processing Unit) (not shown) and the like, and includes an image type determination unit 36, a display data generation unit 37, and the like.
  • the main body control unit 31 expands a program designated from the system program and various application programs stored in the program storage unit 34 in the work area of the RAM 35, and in cooperation with the program expanded in the RAM 35, Execute the process.
  • CPU Central Processing Unit
  • the main body control unit 31 expands a program designated from the system program and various application programs stored in the program storage unit 34 in the work area of the RAM 35, and in cooperation with the program expanded in the RAM 35, Execute the process.
  • the image type determination unit 36 is a functional unit that determines the image type for the original image data input via the interface.
  • the image type determined by the image type determination unit 36 includes the number of pixels in the vertical and horizontal directions of the original image data (original image data), whether the original image data is color image data or monochrome image data. Size).
  • the determination result by the image type determination unit 36 is sent to the display data generation unit 37.
  • each original image data as supplementary information (header information of the image data), the type of the image generation apparatus 1 that acquired the original image data, the color information of the image, the number of bits per pixel of the image, the byte per pixel Various information such as the number, the number of pixels in the vertical direction of the image, and the number of pixels in the horizontal direction of the image are attached.
  • Each supplementary information is given an address and is attached to the original image data in a form that can be referred to.
  • the image type determination unit 36 determines the image type of each image based on the supplementary information attached to the original image data. It comes to judge.
  • the conditions considered as the image type are not limited to those exemplified here. For example, the image type may be combined with the number of gradations.
  • the original image data is stored in accordance with, for example, the DICOM standard, which is a standard related to the distribution of medical images, the storage format of medical images, and the like.
  • DICOM standard is a standard related to the distribution of medical images, the storage format of medical images, and the like.
  • the method for attaching the incidental information to the original image data is not particularly limited. If the original image data is not stored in the storage format of the DICOM standard, necessary information is input from an input unit (not shown). For example, a method of adding necessary additional information by reading the barcode or the like can be used.
  • the display data generation unit 37 includes the number of pixels in the vertical direction and the number of pixels in the horizontal direction of the image of the original image data determined by the image type determination unit 36, and the number of pixels in the vertical direction and the pixels in the horizontal direction of the liquid crystal panel 51.
  • the display data generating means generates display data based on each original image data in accordance with the number and the presence / absence of enlarged display / trimming input from the input unit 7.
  • the display data generation unit 37 applies a gradation conversion LUT (not shown) to perform image processing of each original image data under image processing conditions according to the image type of the original image data, and generate display data. It is supposed to be.
  • the original image data has 4800 pixels in the vertical direction and 3600 pixels in the horizontal direction of the image, and the number of pixels in the vertical direction of the liquid crystal panel 51 that displays the original image data.
  • the total number of pixels is obtained by thinning out the vertical pixels and the horizontal pixels. Is thinned so that the image can be displayed on the liquid crystal panel 51.
  • an image is displayed on the liquid crystal panel 51 at a reduction ratio in which the ratio of the number of pixels of the display data to the number of pixels of the original image data is 1: 3. It is necessary to generate display data to be displayed.
  • the number of pixels in the vertical direction of the image is 15 pixels
  • the number of pixels in the horizontal direction is 12 pixels
  • the number of pixels in the vertical direction of the liquid crystal panel 51 on which the original image data is displayed is 5 pixels.
  • the thinning process is performed with 9 pixels (3 vertical pixels ⁇ 3 horizontal pixels) in the original image data as one pixel, so that the vertical pixel count is 5 pixels and the horizontal pixel count.
  • the display data with 4 pixels can be generated.
  • a representative value of 9 pixels (3 vertical pixels ⁇ 3 horizontal pixels) in the original image data (FIG. 5a) is obtained, and this representative value is used as a pixel value.
  • a thinning process is performed with one pixel to be processed (FIG. 5b).
  • the representative value may be a pixel value at the center of 9 pixels, or an average value, a median value, or a maximum value of 9 pixels may be obtained. In the present embodiment, an average value of 9 pixels is used as a representative value below.
  • gradation number conversion processing is performed so that the gradation number changes from 768 gradations to 256 gradations in accordance with the gradation number of the liquid crystal panel 51 (FIG. 5c).
  • the pixel value determined for each pixel (for example, the pixel value of the upper right pixel in FIG. 5c is 113) is set to 256 gradations using the pixel values of the three sub-pixels a, b, and c constituting the pixel.
  • Display image data is generated (FIG. 5d).
  • FIG. 6 schematically shows a decrease in the number of pixels when display data is generated by this method.
  • the representative value of the original image data (9 pixels (3 vertical pixels ⁇ 3 horizontal pixels) in FIG. 7a is obtained, and this representative value is used as the pixel value.
  • Thinning processing is performed with one pixel as shown in Fig. 7b, and pixel values are determined individually for the three sub-pixels a, b, and c constituting each pixel of the liquid crystal panel 51, and these three sub-pixels are determined.
  • display data capable of expressing the same number of gradations as the number of gradations of the original image data (768 gradations in FIG. 7) is generated ( Fig. 7c) Fig.
  • the number of pixels in the arrangement direction (vertical direction in FIG. 9) of the sub-pixels a, b, c is the same as the number of pixels of the original image data.
  • gradation number conversion processing is performed so that the gradation number changes from 768 gradations to 256 gradations in accordance with the gradation number of the liquid crystal panel 51 (FIG. 9c). Then, the three pixels in the horizontal direction in the original image data (FIG. 9a) are set as one sub pixel a, b, c, and each sub pixel a, b, c is used for 256 gradation display. Image data is generated (FIG. 9d). As a result, as shown in FIG. 10, the number of pixels in the vertical direction is the same as the number of pixels in the original image data, and the number of pixels in the horizontal direction is one third of the number of pixels in the original image data.
  • FIG. 11 schematically shows a decrease in the number of pixels when display data is generated by this method. According to this method, even when the number of pixels of the original image data is large and the entire image cannot be displayed on the liquid crystal panel 51 as it is, display data that can display the entire image on the liquid crystal panel 51 is generated. be able to.
  • the sub-pixels a, b, and c are driven independently, the number of gradations when displayed on the liquid crystal panel 51 is reduced to 256 gradations, but the vertical direction (sub-pixels a, b, c c) is the same as the number of pixels of the original image data, so that the resolution is improved and a high-definition image can be displayed.
  • the original image data has 4800 pixels in the vertical direction and 3600 pixels in the horizontal direction, and the number of pixels in the vertical direction from such an image.
  • an image having 1600 pixels and a horizontal pixel count of 1200 pixels is selected and displayed on the liquid crystal panel 51, as shown in FIG. 12, an image within an arbitrarily set trimming frame is displayed.
  • display data for displaying an image that is the same size as the original image data (the ratio between the number of pixels of the display data and the number of pixels of the original image data is 1: 1) is generated. This will be described with reference to FIG. 13 with the number of pixels reduced for convenience.
  • the original image data is an image in which the number of pixels in the vertical direction of the image is 15 pixels, the number of horizontal pixels is 12 pixels, the number of vertical pixels is 5 pixels, and the number of horizontal pixels is 4 pixels.
  • the trimming frame is set so that the image is displayed on the liquid crystal panel 51, the portion corresponding to the trimming frame in the original image data (the number of pixels in the vertical direction is 5 pixels and the number of pixels in the horizontal direction is 4 pixels) Display data can be generated.
  • the portion corresponding to the trimming frame in the original image data (the portion surrounded by the thick line in FIG. 14a) is extracted (FIG. 14b), and this is the liquid crystal panel.
  • the gradation number conversion processing is performed so that the gradation number is changed from 768 gradations to 256 gradations in accordance with the gradation number 51 (FIG. 14c).
  • the pixel value determined for each pixel (for example, the pixel value of the upper right pixel in FIG. 14C is 128) is set to 256 gradations using the pixel values of the three sub-pixels a, b, and c constituting the pixel.
  • Display image data is generated (FIG. 14d).
  • the portion corresponding to the trimming frame in the original image data (the portion surrounded by the thick line in FIG. 15a) is extracted (FIG. 15b), and the liquid crystal panel 51 Pixel values are individually determined for the three sub-pixels a, b, and c constituting each pixel, and one pixel is expressed by combining these three sub-pixels a, b, and c.
  • Display data capable of expressing the same number of gradations as the number of gradations (768 gradations in FIG. 15) is generated (FIG. 15c).
  • display data generation unit 37 In the generation of display data by the display data generation unit 37, display in the case where the original image data is reduced and the entire image is displayed on the liquid crystal panel 51 by combining the reduction method and the trimming method as described above. It is possible to generate data for display and display data when a part of the image of the original image data is trimmed and displayed at the same magnification as the original image data.
  • FIG. 16 shows an example of a combination (combination pattern) of a reduction method and a trimming method, and evaluation of resolution and gradation resolution in each combination pattern.
  • the combination pattern includes a first combination pattern obtained by combining the first reduction method and the first trimming method, and a second combination obtained by combining the second reduction method and the second trimming method. 4 combination patterns, a third combination pattern combining the third reduction method and the first trimming method, and a fourth combination pattern combining the third reduction method and the second trimming method.
  • the first reduction method is adopted, the processing speed increases, but the resolution and gradation resolution of the entire image displayed based on the display data are inferior.
  • the entire image displayed based on the display data has a low resolution but a high gradation resolution.
  • the third reduction method is adopted, the entire image displayed based on the display data is inferior in terms of gradation resolution, but the resolution is high. Further, when the first trimming technique is used for trimming, the resolution is high, but the gradation resolution is inferior. When the second trimming technique is adopted, the resolution is high and the gradation resolution is excellent.
  • the fourth combination pattern is employed to generate display data. That is, in the present embodiment, the display data generation unit 37 displays the image by the third reduction method (see FIG. 9) when reducing the original image data and displaying the entire image on the liquid crystal panel 51. When the image data is generated and a part of the image of the original image data is trimmed and displayed at the same magnification as the original image data, the display data is generated by the second trimming method (see FIG. 15).
  • the range and enlargement ratio to be enlarged are input so that a user such as a doctor can enlarge and display a part of the original image data.
  • the range in which the enlarged display is instructed is the original image data.
  • the pixel values of the three sub-pixels a, b, and c constituting each pixel of the liquid crystal panel 51 are individually determined so that the instructed enlargement ratio is obtained, and the three sub-pixels a, b, Display data capable of expressing the same number of gradations as the number of gradations of the original image data is generated by combining c and expressing one pixel.
  • the liquid crystal panel 51 can display at least two images having different display magnifications with respect to images based on the same original image data on the same screen.
  • an image with a large display magnification for example, trimming or (Enlarged image) is displayed.
  • a display frame 55 (see FIG. 18B) indicating the corresponding position of an image with a large display magnification is displayed in an image with a small display magnification.
  • the display data generated by the display data generation unit 37 is sent to the display means control unit 32.
  • the display means control section 32 inputs display data sent from the display data generation section 37 to the liquid crystal drive section 52 of the image display means 5 based on the control of the main body control section 31, so that the image display means 5.
  • the image display means 5 is controlled so that the liquid crystal panel 51 displays images, characters, and the like based on the display data.
  • the display means control unit 32 switches the display data input to the liquid crystal drive unit 52, thereby depending on the ratio between the number of pixels of the display data generated by the display data generation unit 37 and the number of pixels of the original image data.
  • the liquid crystal panel 51 When displaying an image on the liquid crystal panel 51, the liquid crystal panel 51 is driven with one pixel of the liquid crystal panel 51 as one unit of gradation expression, or the sub-pixels a, b, and c are set as one unit of gradation expression. It functions as a drive control means for controlling the liquid crystal drive unit 52 so as to switch whether the liquid crystal panel 51 is driven.
  • the display means control unit 32 for example, a graphic board or the like can be used.
  • step S ⁇ b> 1 when the original image data is input from the image generation device 1 to be displayed on the liquid crystal panel 51 of the image display unit 5 by the image processing unit 3 (step S ⁇ b> 1), the main body control unit 31.
  • the original image data is stored in the RAM 35 (step S2).
  • the image type determination unit 36 determines the number of pixels in the vertical direction and the horizontal direction of the original image data (step S3), and sends the determination result to the display data generation unit 37.
  • the number of pixels in the vertical and horizontal directions of the liquid crystal panel 51 of the image display means 5 is stored in the storage unit 33, and the display data generation unit 37 receives the determination result from the image type determination unit 36.
  • the reduction rate of the display data, the pixel value assigned to each pixel or sub-pixel, and the like are determined to generate display data.
  • the display data generation unit 37 displays the image by the third reduction method (see FIG. 9) so that the entire image (entire image) based on the original image data can be displayed on the liquid crystal panel 51.
  • Business data is generated (step S4).
  • the generated display data is sent to the display means control section 32, and the display means control section 32 inputs the sent display data to the liquid crystal drive section 52 of the image display means 5 (step S5).
  • the liquid crystal driving unit 52 drives each sub-pixel of the liquid crystal panel 51 based on the display data input from the display means control unit 32 (step S6), whereby the entire image corresponding to the original image data (entire image). Are displayed on the liquid crystal panel 51 (step S7).
  • the main body control unit 31 determines whether or not an instruction for trimming or enlarging a part of the entire image has been input (step S8). Then, when an instruction for trimming or enlarging is input (step S8: YES), the display data generation unit 37 selects the specified range of trimming or enlarging in the image for the range of the image. The display data of the enlargement ratio based on the instruction is generated from the original image data (step S9). Specifically, the display data generation unit 37 generates display data for the selected / designated range by the second trimming technique (see FIG. 15).
  • the generated display data is input from the display means control unit 32 to the liquid crystal drive unit 52 (step S10), and the liquid crystal drive unit 52 is driven by inputting an input signal based on the display image data to each subpixel. (Step S11). Thereby, an enlarged image is displayed on the liquid crystal panel 51 (step S12). At this time, the enlarged image is displayed on the liquid crystal panel 51 together with the entire image or in parallel with the entire image or superimposed on the entire image.
  • a display frame 55 (see FIGS. 18A and 18B) representing the position of the enlarged image on the entire image is displayed on the entire image. For example, in the case of trimming, a display as shown in FIG. 18A is performed.
  • the sub-pixels a, b, and c are expressed in gradation. Therefore, the resolution can be increased. For this reason, even in a state where the entire image is reduced and displayed, a user such as a doctor can find a suspicious portion from the image. Further, when trimming or enlarging a part of the image of the original image data and displaying it at the same magnification as the original image data, the three sub pixels a, b, and c are combined and handled as one pixel. The number of gradations that can be expressed by the pixels a, b, and c can be expressed more than twice. For this reason, a more detailed diagnosis can be performed when the suspicious lesion is enlarged and displayed.
  • an enlarged region display frame indicating the position of the enlarged image on the entire image is displayed on the entire image, and the enlarged image is displayed on the liquid crystal panel 51 together with the entire image.
  • the position of the enlarged portion in the entire image can be easily understood by a doctor or the like who makes a diagnosis, and the peripheral portion of the enlarged portion can be simultaneously confirmed by viewing the entire image, which contributes to the convenience of diagnosis.
  • the ratio between the number of pixels of the display data and the number of pixels of the original image data is one pair.
  • the reduction rate is 3 has been described as an example, the reduction rate is not limited to this.
  • the ratio of the number of pixels of the display data and the number of pixels of the original image data is an example of 1: 1.
  • the enlargement ratio is not limited to this.
  • the liquid crystal panel 51 displays two types of an entire image obtained by reducing the image of the original image data and an enlarged image obtained by enlarging a part of the original image data to the same size as the original image data.
  • a plurality of images with different enlargement ratios may be displayed simultaneously.
  • a part of the enlarged image enlarged to the same size as the original image data may be further enlarged and displayed.
  • the method for obtaining new pixel data when the image is reduced is not limited to this embodiment.
  • various commonly used interpolation methods such as closest interpolation, linear interpolation, spline interpolation, bicubic interpolation, and simple average / weighted average of a plurality of pixels can be used.
  • a filtering process that attenuates the high-frequency noise component may be performed during the interpolation.
  • Different interpolation methods may be used depending on the reduction ratio, or different interpolation methods may be used for the subpixel arrangement direction and the direction orthogonal thereto.
  • the image generation apparatus 1 is connected to the image display system 100 via a communication network.
  • external devices connected to the image display system 100 are not limited to the image generation apparatus 1.
  • a patient information storage device that stores electronic medical record information or the like may be connected to the image display system 100.
  • the image generation apparatus 1 is connected to the image display system 100.
  • a PACS Picture Archiving and Communication System
  • a PACS server to be managed may be connected to the image display system 100 via a communication network.
  • the image display system 100 is configured to acquire the original image data by reading the original image data and the like collectively managed in the PACS server.
  • the PACS server stores patient information such as original image data and electronic medical record information generated by various image generating apparatuses in a database.
  • the original image data and the like are stored in accordance with the DICOM standard, and various information relating to the image data is written in the header area of the image data and is added to the database as incidental information. Even when the PACS server is not connected to the communication network, it is only necessary that the storage means for storing the original image data generated by the individual image generation apparatuses is connected to the image display system 100 via the communication network.
  • the image display processing program is stored in the program storage unit 34 of the image processing means 3, but the storage destination of the image display processing program is not limited to the one illustrated here.
  • the main body control unit 31 may read a program stored in an external storage unit and expand it in the RAM 35.
  • the liquid crystal panel 51 is provided as the image display unit.
  • the image display unit is not limited to the liquid crystal panel as long as it can display a medical image with high luminance.
  • a CRT (Cathode Ray Tube) display or the like may be used as the image display means.
  • FIGS. 19A and 19B a second embodiment of the image display system according to the present invention will be described with reference to FIGS. 19A and 19B. Since the second embodiment differs from the first embodiment in the method for generating display data, the following description will particularly focus on differences from the first embodiment. Since the configuration of the image display system is the same as that shown in the first embodiment, the description thereof is omitted.
  • the image display system includes image processing means and image display means, as in the first embodiment.
  • the image type determination unit of the image processing unit determines the number of pixels in the vertical and horizontal directions of the original image data based on the supplementary information of the original image data, whether the original image data is color image data or monochrome image data (original image data). Data size) and the like.
  • the determination result by the image type determination unit is sent to the display data generation unit.
  • the display data generation unit generates display data based on each original image data according to whether the image type of the original image data determined by the image type determination unit is color image data or monochrome image data. Means.
  • the display data generation unit displays the liquid crystal panel according to the ratio between the number of pixels of the display data and the number of pixels of the original image data. Display data is generated so that the liquid crystal panel is driven with one pixel as one unit of gradation expression, or display data is generated so that the liquid crystal panel is driven with each sub-pixel as one unit of gradation expression. Switch what to do. That is, when the image of the original image data is reduced and the entire image is displayed on the liquid crystal panel 51, display data is generated by the third reduction method (see FIG. 9) shown in the first embodiment, When a part of the image of the original image data is trimmed and displayed at the same magnification as the original image data, the display data is generated by the second trimming technique (see FIG. 15).
  • one pixel of the liquid crystal panel is represented by one unit of gradation expression regardless of the ratio between the number of pixels of the display data and the number of pixels of the original image data.
  • the display data generation unit When displaying an image based on color image data on the liquid crystal panel, the display data generation unit corresponds to the brightness detected by human eyes when the color image is displayed on a color display monitor. Display data is generated by converting original image data of a color image so as to be monochrome gradation data of 1ch.
  • the main body control unit stores the original image data in the RAM (step S22).
  • the image type determination unit determines the number of pixels in the vertical and horizontal directions, whether color image data or monochrome image data of the original image data (step S23), and sends the determination result to the display data generation unit.
  • step S24 It is determined whether the original image data is monochrome image data from the determination result of the display data generation unit (step S24). If the original image data is monochrome image data (step S24: YES), the display data generation unit Is based on the determination result of the number of pixels in the vertical direction and the horizontal direction of the original image data by the image type determination unit and the number of pixels in the vertical direction and the horizontal direction of the liquid crystal panel. Alternatively, data to be assigned for each sub-pixel is determined, and display data is generated (step S25). Specifically, the display data generation unit uses the third reduction method (see FIG. 9) shown in the first embodiment so that the entire image based on the original image data can be displayed on the liquid crystal panel. Generate display data.
  • the generated display data is sent to the display means control section, and the display means control section inputs the sent display data to the liquid crystal drive section of the image display means (step S26).
  • the liquid crystal driving unit drives each sub-pixel of the liquid crystal panel based on the display data input from the display means control unit (step S27), whereby the entire image (entire image) corresponding to the original image data is displayed on the liquid crystal panel. (Step S28).
  • the main body control unit determines whether or not an instruction to trim or enlarge a part of the entire image has been input (step S29).
  • the main body control unit indicates that trimming or enlargement is to be performed.
  • Display data is generated for the selected / designated range by the second trimming technique (see FIG. 15) shown in the first embodiment.
  • the generated display data is sent to the display means control section, and the display means control section inputs the sent display data to the liquid crystal drive section of the image display means (step S31).
  • the liquid crystal driving unit drives each sub-pixel of the liquid crystal panel based on the display data input from the display means control unit (step S32), whereby the entire image (entire image) corresponding to the original image data is displayed on the liquid crystal panel. (Step S33).
  • the display data generation unit reduces the number of pixels in the vertical and horizontal directions of the original image data and displays the entire image as a reduced image.
  • the third reduction method (see FIG. 9) shown in the first embodiment, or the second method shown in the first embodiment, regardless of whether the image is extracted or part of the image is extracted and enlarged.
  • display data to be handled as one pixel is generated by combining the three sub-pixels (step S34).
  • the generated display data is sent from the display means control unit to the liquid crystal drive unit (step S35), and the liquid crystal drive unit inputs an input signal based on the display image data to each sub-pixel to drive it (step S36).
  • an image is displayed on the liquid crystal panel (step S37).
  • the enlarged image is displayed on the liquid crystal panel together with the entire image.
  • an enlarged region display frame representing the position of the enlarged image on the entire image is displayed.
  • each sub-pixel is represented by 1 in gradation expression. Since it is handled as a unit, the resolution can be increased. For this reason, even in a state where the entire image is reduced and displayed, a user such as a doctor can find a suspicious portion from the image.
  • the three sub-pixels are combined and handled as one pixel. It is possible to express the number of gradations more than twice the number of gradations that can be expressed. For this reason, when a portion suspected of having a lesion is enlarged and displayed, an image that allows more detailed diagnosis can be displayed.
  • the number of pixels is not as large as in the case of monochrome image data, so the entire image is displayed by reducing the image, or an enlarged image obtained by enlarging a part of the image is displayed. Regardless of whether it is displayed, the three sub-pixels are combined and handled as one pixel. Thereby, when displaying an image based on color image data, it is possible to express the number of gradations more than twice the number of gradations that can be expressed by the sub-pixel, and to display an image suitable for diagnosis. .
  • the pixel when an image is displayed on the liquid crystal panel depending on whether the image type of the original image data is color image data or monochrome image data, the pixel is set as one unit of gradation expression, or the sub-pixel is set as a scale.
  • An example of switching whether to use one unit of tone expression was taken as an example, but image types considered for switching whether a pixel is set as one unit of tone expression or a sub-pixel is set as one unit of tone expression are It is not limited to this.
  • the original image data is a CR image
  • the number of pixels of the original image data is large. Therefore, in order to display the entire image on the liquid crystal panel, it is necessary to use one sub-pixel.
  • CT is a CT image or the like
  • the number of pixels of the original image data is not so large, so that the entire image can be displayed even if the pixels of the liquid crystal panel having three sub-pixels as one unit are treated as one pixel. .
  • the fourth combination pattern shown in the first embodiment is applied and each sub image is displayed when the entire image is displayed.
  • Display data is generated so that a pixel is handled as one pixel
  • the original image data is a CT image or the like
  • the first combination pattern shown in the first embodiment is applied to display the entire image.
  • which pixel or sub-pixel is used as one unit of gradation expression such as generating display data so that the pixel of the liquid crystal panel is handled as one pixel You may make it switch.
  • the correspondence relationship between the combination of the reduction method and the trimming method corresponding to the image type shown in FIG. 20 is stored in, for example, the storage unit 33, and the program reads the correspondence relationship to generate an image attached to the image data. It is preferable to automatically select a combination pattern according to the type of the device 1.
  • the display data is generated by thinning out the original image data so that the ratio of the number of pixels of the display data and the number of pixels of the original image data becomes a reduction ratio of 1: 3.
  • display data is generated by thinning the original image data so that the ratio of the number of pixels of the display data and the number of pixels of the original image data is 2 to 3, and the display data is generated on the liquid crystal panel. The case of displaying an image will be described with reference to FIGS.
  • the ratio between the number of display data pixels and the number of original image data pixels is 2.
  • a thinning process is performed on the original image data so as to form a pair 3, and three pixels ⁇ , ⁇ , ⁇ (see FIG. 22) arranged in parallel in the direction orthogonal to the arrangement direction of the sub-pixels a, b, c are converted into two pixels ( 21a and FIG. 22).
  • the thinning process is performed as follows, for example. That is, for example, as shown in FIG.
  • the calculation formula is (384 ⁇ 2 + 372) ⁇ 3, and the pixel value is 380.
  • the decimal part is rounded down. Note that the method of thinning out the original image data so that the ratio to the number of pixels is 2 to 3, is not limited to this.
  • the thinning process for thinning the original image data so that the ratio of the number of pixels in the arrangement direction of the sub-pixels a, b, and c is 2 to 3, is performed as follows, for example. That is, first, gradation number conversion processing for converting the original image data having 766 gradations into 256 gradations is performed. Specifically, for example, in the case of the upper left pixel in FIG. 21b, the pixel value in the data of 766 gradations is “376”, which is converted from 766 gradations to 256 gradations, so as shown in FIG. 21c. The pixel value after the conversion of the number of gradations can be obtained by an expression of 376 ⁇ 765 ⁇ 255.
  • pixel values associated with one pixel in the liquid crystal panel that is, the three subpixels a, b, and c constituting one pixel in the liquid crystal panel
  • the ratio of the number of pixels of display data to the number of pixels of original image data is 2 to 3.
  • the original image data is reduced in such a way (thinning process: see FIG. 21d).
  • two sub-pixels a and b (or sub-pixels c and a and sub-pixels b and c) are one unit of gradation expression in the arrangement direction of the sub-pixels.
  • one pixel of the liquid crystal panel is composed of three sub-pixels a, b, and c, one pixel in the original image data is associated with two sub-pixels as described above.
  • one pixel in the original image data is expressed across two pixels on the liquid crystal panel (for example, in FIG. 21e, the sub-pixel c and the sub-pixel a adjacent to the lower side are the same in the original image data). Although it constitutes one pixel, it belongs to another adjacent pixel on the liquid crystal panel.)
  • the same signal value may be assigned to the two sub-pixels a and b as shown in FIGS. 21d and 21e.
  • the two sub-pixels a and b (or By expressing the gradation in the arrangement direction of the sub-pixels by combining the signal values of the sub-pixels c, a and sub-pixels b, c), the number of gradations higher than the number of gradations that the sub-pixels a, b, c can represent It is more preferable to express the logarithm.
  • the pixel value after the gradation number conversion is obtained by the expression of 376 ⁇ 765 ⁇ 510.
  • the CR image has a high resolution, and the number of pixels corresponding to image information of a so-called half-cut size (14 inches ⁇ 17 inches) is as shown in the pixel number column of the original image data in FIGS. 24B and 25B. If it is 200 ⁇ m, it is 1760 pixels ⁇ 2140 pixels, and if the pixel size is 175 ⁇ m, it is 2010 pixels ⁇ 2446 pixels, and the number of pixels is very large. Therefore, a 5M pixel liquid crystal monitor (pixel number: 2048 pixels ⁇ 2560 pixels) is required to display the entire image at the same magnification of the original image data. However, a 5M pixel liquid crystal monitor is expensive, and a large capital investment is required to introduce it into a facility.
  • the number of gradations of the original image data is 768, but the number of gradations of the original image data is not limited to this.
  • the number of gradations of the original image data of the CR image is preferably 1024 gradations (10 bits) or more, and 4096 gradations (12 bits) is preferable.
  • the case where the sub-pixels a, b, and c are driven with the same signal value will be described with reference to FIGS. 26, 28A, and 28B.
  • the number of gradations that can be expressed is 256 gradations from 0 to 255.
  • monochrome gradation conversion LUT shown in FIG. 28A monochrome gradation conversion LUT processing for converting a monochrome 1-channel signal into 256 gradations is performed.
  • the LUT for performing the monochrome gradation conversion LUT processing may be a simple proportional relationship, or may be a curved LUT with display gradation characteristics as shown in FIG.
  • signal distribution LUT processing for assigning the same value to each of the sub-pixels a, b, and c is performed corresponding to the internal signal converted to 256 gradations.
  • the sub-pixels a, b, and c can be driven with the same signal value.
  • a monochrome gradation conversion LUT process for converting a monochrome 1-channel signal into 766 gradations is performed.
  • the LUT for performing the monochrome gradation conversion LUT processing may be a simple proportional relationship, or may be a curved LUT with display gradation characteristics as shown in FIG. Further, using the signal distribution LUT shown in FIG. 29B, a signal that is assigned so that the sum of the signal values of the sub-pixels monotonously increases as the internal signal value increases in response to the internal signal converted to 765 gradations. A distribution LUT process is performed. Thereby, multi-gradation display can be performed.
  • the monochrome gradation conversion LUT process and the signal distribution LUT process are performed in two stages.
  • a composite LUT of the monochrome gradation conversion LUT and the signal distribution LUT is created in advance, and the process is performed once. It is more preferable to perform these processes by the LUT process because the processing time is shortened.
  • the image processing means when an image signal is transmitted from the image processing means to the image display means, data is transferred as R, G, B color image signals defined by the OS (Operating System).
  • the liquid crystal driving unit drives the sub-pixels a, b, and c corresponding to the R, G, and B color image signals.
  • the image processing means performs image processing based on the arrangement method of the sub-pixels a, b, and c and the correspondence relationship between the sub-pixels a, b, and c and the signal values of R, G, and B.
  • the sub-pixels a, b, and c are in the vertical direction of the image.
  • the reduction processing is performed so that the unit becomes one unit of gradation expression, and the pixel becomes one unit of gradation expression in the left-right direction of the image.
  • the sub-pixels a, b, and c are arranged in the left-right direction (see “horizontal orientation” on the left and right sides in FIGS. 30 and 31)
  • the sub-pixels a, b, c The reduction processing is performed so that c is one unit of gradation expression and the pixel is one unit of gradation expression in the vertical direction of the image.
  • the signal values are distributed in consideration of which of the R, G, and B signal values the sub-pixels a, b, and c are driven to correspond to. For example, when the sub-pixels a, b, and c correspond to the order of R, G, and B, and when the sub-pixels a, b, and c correspond to the order of B, G, and R, the signal distribution order Is different.
  • the sub-pixels are arranged in the order of a, b, c, a, b, c... (See FIG. 30), or are they arranged in the order of c, b, a, c, b, a. ),
  • the order of signal distribution varies.
  • the distribution of the R, G, and B signals of the image signal is performed so that the vertical and horizontal order of the image information is maintained in the order that should be originally displayed.
  • the sub-pixel structure differs depending on the liquid crystal panel.
  • the direction in which the sub-pixels are arranged differs by 90 degrees depending on whether the monitor (liquid crystal panel) is placed vertically or horizontally (see FIGS. 30 and 31). Therefore, information for associating a, b, c with R, G, B signals defined by the OS and information on whether the monitor is placed vertically or horizontally is stored for each monitor, or the OS, device Information is acquired from the driver (display means control unit, liquid crystal drive unit) and the monitor itself, and the vertical and horizontal display magnifications and / or how to assign signals to the sub-pixels a, b, and c are selected according to the information. It is preferable to configure as described above.
  • image generation device 3 image processing means 5 image display means 7 input unit 31 main body control unit 32 display means control unit 33 storage unit 36 image type determination unit 37 display data generation unit 51 liquid crystal panel 52 liquid crystal drive unit 100 image display system

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Abstract

L'invention concerne un système d'affichage d'image dans lequel un affichage d'image à 8 bits (256 tons) avec un affichage d'image haute résolution et à plusieurs tons avec une résolution normale peut être réalisé en passant de l'un à l'autre de manière à afficher une image optimale par un procédé simple, en fonction des circonstances. Un programme d'affichage d'image est également décrit. Le système d'affichage d'image est doté d'une section de génération de données d'affichage (37) pour générer des données d'affichage basées sur des données d'image d'origine ; une section de commande de cristaux liquides (52) qui peut commander un panneau à cristaux liquides monochrome (51) par sous-pixel ; et une section de commande de moyen d'affichage (32) qui commande la section de commande de cristaux liquides (52) pour commuter afin de commander le panneau à cristaux liquides (51) avec un pixel comme unité pour expression de ton ou afin de commander le panneau à cristaux liquides (51) avec le sous-pixel comme unité pour expression de ton, correspondant à un rapport entre le nombre de pixels de données d'affichage générées par la section de génération de données d'affichage (37) et le nombre de pixels des données d'image d'origine, au moment d'e l'affichage d'une image sur le panneau à cristaux liquides (51).
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Cited By (4)

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WO2012132050A1 (fr) * 2011-03-31 2012-10-04 株式会社ナナオ Dispositif d'affichage, dispositif de traitement d'image, procédé de détection de zone d'image et programme d'ordinateur
JP2012216184A (ja) * 2012-01-24 2012-11-08 Nanao Corp 表示装置、画像処理装置、画像領域検出方法及びコンピュータプログラム
JP2013089074A (ja) * 2011-10-19 2013-05-13 Nanao Corp 表示装置及び表示方法
CN109272964A (zh) * 2018-11-20 2019-01-25 深圳市巨烽显示科技有限公司 一种用于消除单色显示器残影的方法及装置

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JP2013257417A (ja) * 2012-06-12 2013-12-26 Jvc Kenwood Corp モノクロ画像表示装置
KR102174898B1 (ko) 2013-12-19 2020-11-06 삼성디스플레이 주식회사 표시 패널 구동 방법, 이 표시 패널 구동 방법을 수행하는 표시 패널 구동 장치 및 이 표시 패널 구동 장치를 포함하는 표시 장치
JP2015222422A (ja) * 2014-04-28 2015-12-10 キヤノン株式会社 表示装置及びその制御方法

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JP2013089074A (ja) * 2011-10-19 2013-05-13 Nanao Corp 表示装置及び表示方法
JP2012216184A (ja) * 2012-01-24 2012-11-08 Nanao Corp 表示装置、画像処理装置、画像領域検出方法及びコンピュータプログラム
CN109272964A (zh) * 2018-11-20 2019-01-25 深圳市巨烽显示科技有限公司 一种用于消除单色显示器残影的方法及装置

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