JPH0227879A - Method and device for processing roll film picture - Google Patents

Abstract

PURPOSE:To attain efficient picture processing with an optimum parameter by applying picture processing while only one picture is confirmed by a CRT at first and applying the succeeding processings automatically based on the processing parameter changed optionally. CONSTITUTION:The title device is provided with a picture memory 1, a still picture processing controller 3 storing an optimum parameter and controlling kinds and parameters of the processing, a changeover switch 4 to select processing units 5-8 according to the kind of the picture processing and a memory 9 storing the processing picture. Then various picture processings are applied only to the initial picture in one roll film with trial and error to optimize the parameter. Then as to the picture processed succeedingly, the kind and parameter of the optimized picture processing are used and the picture is sequentially displayed on a CRT 10 while applying automatic picture processing. Thus, the picture processing of the roll film is implemented efficiently and picked up by using the optimum parameter.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to image processing of digitized roll film, and more particularly to a method and apparatus for automatically processing images with optimized parameters.

[Conventional technology]

As shown in Figure 3, the roll film that has traditionally been used for mass medical examinations makes it difficult to retrieve the necessary previous images, as shown in Figure 3. Then I had no choice but to cut out each image one by one and store them in an organized manner.

For this reason, we have recently digitized roll film images.
A system has been developed that allows interpretation of images by constantly comparing them with previously taken X-ray images on a CRT screen. In order to improve the reading speed, this conventional system
Only certain fixed processing (for example, filter processing, black and white inversion processing, gamma conversion 1, etc.) is performed and no other image processing is performed. Further, the above-mentioned fixed fixed processing parameters cannot be arbitrarily changed by a doctor or the like who interprets the images, since the current and previous images can be compared and compared respectively.

[AWi that the invention aims to solve] Roll films are sometimes sent for image interpretation from various mass medical examination facilities, and the gamma characteristics of the film, imaging conditions, etc. differ for each facility. Therefore, the characteristics of the digitized data are different, and it is difficult to image-process all of this using one fixed parameter. Also,
Most of the areas where mass examinations are performed are the stomach and chest, but it is difficult to treat these different areas with one fixed parameter, and different parameters are needed for different characteristics and different areas. It becomes necessary. The above technology did not take such problems into consideration.

An object of the present invention is to enable the user to arbitrarily change or update optimal parameters for film gamma characteristics, photographing condition circles, variations in the conditions of the roll film itself, and for different parts, and to achieve optimized parameters. By performing image processing using parameters, we can provide processed images in a short time, and for images that require further image processing in addition to this processing,
An object of the present invention is to provide an image processing method and apparatus that can easily perform additional processing.

[Means to solve the problem]

The above purpose is to focus on the fact that there is little variation in photographing conditions and conditions such as parts of roll film for roll film, and to perform various image processing through trial and error only on the first image on roll film roll film. , optimize the parameters. Then, images to be processed thereafter are sequentially displayed on the CRT while being automatically processed using the optimized image processing type and parameters. In order to perform this process at high speed, each image processing unit was arranged in parallel, and each unit was connected in a loop structure using a controller and a bus changeover switch.

[Effect]

The type of processing (gamma conversion,
Filter processing, enlargement processing, black and white inversion processing, etc.) and parameters (gamma characteristics 9 frequency characteristics, magnification ratio 1, etc.) are optimized, so optimization is performed without being affected by variations between collecting facilities or body parts. C with the parameters
Processed images can be displayed on RT. In addition, since the parameters are optimized only for the first sheet of roll film, the number of images per roll film (approximately 450~
560 sheets/volume), it hardly affects the reading time.

Since each image processing unit is arranged in parallel, any combination of image processing is possible by simply switching the buses. Since each image processing unit is arranged in parallel,
It is easy to make additional modifications when it is desired to add types of image processing units, and it is possible to combine them according to the purpose.

〔Example〕

An embodiment of the present invention will be described with reference to FIG.

FIG. 1 is a block diagram of an embodiment of the present invention. 1 is an image memory, 2 is a switch for turning on the bus, 3 is a fixed image processing controller that controls the input processing type and parameters and stores the optimum parameters, and 4 is processed according to the type of image processing in 3. Prosbus changeover switch for selecting units, 5, 6, 7
．． 8 is each image processing unit. 9 is a memory into which processed images are stored, 10 is a CRT, 11 is a keyboard, 12 is an external storage device, 13 is a bus that connects the memories to form a loop, and 14.15 is a bus that connects the memory and the external storage device. Yes, 16 is external memory'! A bus 17 is used to load fixed processing parameters into the controller 3 from location A, and a bus 17 is used to display the image to be processed in the memory 1 on the CRT.

Next, the principle of operation will be explained using the flowchart shown in FIG. 2 showing the image processing procedure.

In (A), when the power is turned on, the previously determined optimal fixed processing parameters are loaded into the controller 3 from the external storage bag FIl12, and the contents of the controller 3 are displayed on the 18 character monitors. At this time, the displayed content is
Information when the optimal fixed processing parameters were created (date 9
Name of creator 9. Number of roll film created, name of testing facility, testing site.

In (B), check the information displayed on these character monitors 18, and if you wish to change it, perform the following (C) (D) (E) (F) optimal fixing process. If the parameters are not changed, proceed to (G).

For example, if the roll film image that was interpreted the previous day was of the stomach, but the image that will be interpreted on the day is of the chest, it is natural that the parameters will need to be changed because the parts are different, and There is no need to change the image if it is the same stomach as the previous day.

Next, a method for determining the optimal fixed processing parameters will be described.

In (C), image data to be processed (original image) to be interpreted on the day is loaded from the external storage device 12 into the memory 1 via the bus 14, and transferred to the CRT via the bus 17.
Display on o. In (D), while looking at this image, input the image processing code and processing parameters from the keyboard 11. In the controller 3, switch 4 is switched according to these input codes, and the image data in memory 1 is processed by any one of image processing 5 to 8. The data is transferred to the unit, and the processing results are stored in the memory 9 and displayed on the CRTlo. (E)
Here, a determination is made repeatedly while looking at the CRT as to whether or not the processed image has been optimized. If the processed image is in a good condition, a code for processing OK is input from the keyboard 11, and the parameters used for image processing are stored in the fixed image processing controller 3 accordingly. At that time, the switch 2 is turned ON to transfer the data in the memory 9 to the memory 1, and next time, this processed image data is used as the image data to be processed, and further processing is performed on this data if necessary. For example, if you perform gamma conversion on the original image, you can process it by changing various parameters,
When the best parameters are determined, the gamma conversion is completed and its contents are stored in the controller 3. Furthermore, if the user desires to perform filter processing other than gamma conversion, the filter processing can be performed on the image after gamma conversion, and the parameters thereof are similarly stored in the controller 3.

Here, when the image is finally optimized, the type and parameters of image processing stored inside the fixed image processing controller 3 become optimization parameters.

That is, in the above example, the two processes of gamma conversion and filter processing and each parameter become the optimal fixed processing parameters. In (F), this fixed image processing controller 3
The content stored inside is set as the optimal fixed processing parameter,
The information is stored in the external storage device 12 via the bus 16. This eliminates the need to optimize processing parameters each time an image is interpreted. Once the optimal fixed processing parameters are determined in this manner, the subsequent processing of the original images is performed by automatically processing and interpreting N images based on these parameters through the process shown in FIG.

Next, a process of automatically and continuously processing - original images using fixed processing parameters and interpreting the processed images on a CRT will be described.

In (G), the next original image is stored in the memory 1 from the external storage device 12 via the bus 14.

At this time, if the contents of the optimal fixed processing parameters are set to perform processing multiple times, turn switch 2 to OFF.
N state so that data can be transferred from memory 9 to memory 1. In (H), the processed image (original image) in the memory 1 is stored in the memory 9 through the image processing unit while switching the switch 4 based on the parameters stored inside the controller 3. If the processing times are combined.

The data in the memory 9 is transferred to the memory 1 via the bus 13 and is input again to the image processing unit for a second image processing. , filter processing are set, so first, the original image in memory 1 is gamma-converted, and the data in memory 9 containing the processing results is transferred to memory 1 via bus 13 again. In (1), the processed image in the memory 9, which has been automatically processed based on the contents of the controller 3 in (H), is transferred to the CRT.
LO display and interpret the image.

In this embodiment, since each image processing unit is arranged in parallel, it is possible to configure a loop structure such as [memory → image processing unit (5 to 8) → memorized...] just by switching the switch 4. This makes it possible to perform various sequential image processing combinations (in the above example, gamma conversion-filter processing, etc.), making it possible to create more optimal processing parameters and providing processed images that are easier to interpret. can.

In addition, if the user wishes to perform additional processing other than the optimal fixation processing on the processed image, the user who is reading the image using the CRTIO makes a decision in (J) and inputs the code for the additional processing from the keyboard 11. Exception handling is performed by inputting. In other words, if you want to add processing other than gamma conversion and filter processing stored in the controller 3 to the CRTIO processed image while viewing and interpreting the CRTIO, enter the additional processing code from the keyboard 11. By doing so, it is possible to perform processing such as enlargement processing and black and white inversion. The processing at this time is performed by inputting the necessary processing and its parameters from the keyboard 11.

In the present invention, since the image processing units are arranged in parallel,
Additional processing can be performed simply by changing the mode of the controller 3 and switching the switch 4 in response to input from the keyboard 11. By sequentially performing steps (G) to (J) on N images as shown in FIG. 4, image processing of the roll film can be efficiently performed and interpreted using optimal parameters.

〔Effect of the invention〕

In this way, continuous image processing is facilitated by arranging each image processing unit in a parallel loop structure and providing the controller 3 and switch 4 to control each image processing unit. Also, when optimizing parameters, if you process the first image while checking it on the CRTIO and store the arbitrarily changed processing parameters in the controller 3, subsequent processing will be automatically performed based on the contents of the controller 3. It is possible to provide highly efficient processed images with optimal parameters.

Furthermore, when performing additional processing in addition to the fixed processing in the process of interpreting images with CRTlo, additional processing can be performed simply by connecting the controller 3 and switch 4 to the bus from the controller 3 and switch 4 to the processing unit in accordance with the input from the keyboard 11. For example, - If a roll of roll film contains 500 images, the shooting conditions and γ characteristics are the same for the roll of roll film, so it is only necessary to optimize the processing parameters once out of 500 rolls. The time required for optimization can be reduced without affecting the interpretation efficiency, and the remaining 499 images can be automatically processed, displayed, and interpreted using the optimal fixed processing parameters.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a flowchart showing the image processing procedure of the present invention. FIG. 3 is an external view of a roll film, and FIG. 4 is a diagram showing the process of interpreting a roll film image according to the present invention. DESCRIPTION OF SYMBOLS 1... Image memory, 2... Switch, 3... Fixed image processing controller, 4... Switch, 5, 6, 7
．． 8... Image processing unit, 9... Image memory, 1
0...CRT, 11...Keyboard, 12...External storage device, Kayaga Rin 1st

Claims (1)

[Claims] 1. A roll film photograph consisting of analog data is digitized by scanning it with a laser, CCD, etc., and image processing is performed on the digital data.
In an image processing device that displays on the RT or stores in an external storage device, a specific image is displayed on the CRT, the image is processed, the type of processing and processing parameters are optimized, and the optimized Memorize the parameters and use them for future CRT
A roll film image processing method characterized in that a display image is automatically processed using the optimization parameters and displayed on a CRT. 2. The roll film image processing method according to claim 1, wherein other image processing can be additionally performed on an image displayed on a CRT after being processed with optimization parameters. 3. Digitize roll film photographs consisting of analog data by scanning them with a laser or CCD, perform image processing on the digital data, and convert
The image processing device displayed on the RT is characterized by arranging processing procedures into units for each type of image processing in parallel, selecting an appropriate image processing unit by a switch, and configuring an image processing loop. Roll film image processing equipment.