JPH09181925A - Image processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the image processor capable of improving the processing efficiency in the color image reproduction system where a color image is photoelectrically read by a photoelectric conversion element such as a CCD, the read image is converted into a digital signal and the signal is image- processed and reproduced on a recording medium or the like. SOLUTION: In this processor 5, image data obtained by reading a color image and converted into a digital signal are stored in image data storage means 51, 52, 53, image processing is applied to the image data stored in the image data storage means 51, 52, 53 to reproduce a color image. In this case, the processor is provided with an image data input bus 63 giving the image data to the image data storage means 51, 52, 53, and an image data output bus 64 outputting image data from the image data storage means 51, 52, 53, and the image data input bus 63 and the image data output bus 64 are provided independently of a data bus 65 to which the CPU 60 controlling the entire color image reproduction system is connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus, and more specifically, it photoelectrically reads a color image, converts it into a digital signal, and stores it as image data in a frame memory. The present invention relates to an image processing device used in a color image reproducing system for performing image processing on image data stored in a memory and reproducing a color image.

[0002]

2. Description of the Related Art A color image recorded on a negative film, a reversal film or a color print is recorded on a C
The data is photoelectrically read by a photoelectric conversion element such as a CD, converted into a digital signal, and stored in a frame memory as image data. Further, the image data stored in the frame memory is subjected to image processing, and color paper or the like is processed. A color image reproducing system for reproducing on a recording material or a display device such as a CRT has been proposed.

[0003]

This color image reproducing system photoelectrically reads a color image recorded on a negative film, a reversal film or a color print and converts it into a digital signal to generate image data. An image reading device, an image processing device that performs predetermined image processing on the image data generated by the image reading device, and a color image on a color paper based on the image data that is image processed by the image processing device. And an image output device for reproducing. Conventionally, a CPU that controls an image processing apparatus of such a color image reproduction system is connected to a bus, and the bus further has an I / O for accessing a memory storing an operation program of the CPU and an input / output device. Not only ports but also an input / output bus for inputting and outputting image data to and from the frame memory is connected, so while inputting image data to the frame memory and while outputting image data from the frame memory, The CPU could not access the memory or the input / output device. However, the image processing device of the color image reproduction system is required to handle data of a very large amount of image data of the color image, and further, since the color image is read at high speed by the image reading device, Image data is sent to the processing unit one after another, and thus the bus is
A large amount of time will be used for input / output of the frame memory unit of image data. As a result, CP
U can access the memory and the input / output device only for a very limited time, the waiting time of the CPU becomes very long, and the processing efficiency of the image processing device is lowered.

Further, in this color image reproducing system,
A frame memory is used as a memory to store image data for the reason that it is possible to rotate a color image recorded on a film or color print and output it on color paper. During output of image data, image data cannot be stored until output of image data for one frame is completed, while input of image data for one frame is completed during input of image data. Image data cannot be output until that time, the image reading apparatus must hold the generated image data while the image data is being output from the frame memory. , Until the input of image data to the frame memory is completed, the image data cannot be read and a color image cannot be output. Image data efficiently and has a problem that can not be processed. Therefore,
The present invention photoelectrically reads a color image recorded on a negative film, a reversal film or a color print by a photoelectric conversion element such as a CCD, converts it into a digital signal, and stores it as image data in a frame memory. An image processing device used in a color image reproducing system for performing image processing on image data stored in a frame memory and reproducing the image data on a recording material such as color paper or a display device such as a CRT. It is an object of the present invention to provide an image processing device capable of improving processing efficiency and, in turn, improving the color image reproduction speed of the entire color image reproduction system.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
Image data obtained by photoelectrically reading a color image and converting it into a digital signal is stored in an image data storage unit, and image processing is performed on the image data stored in the image data storage unit to reproduce a color image. An image processing apparatus for a color image reproduction system, comprising: an image data input bus for inputting image data to the image data storage means; and an image data output bus for outputting image data from the image data storage means, the image data The input bus and the image data output bus are achieved by an image processing device provided independently of a bus to which a CPU controlling the entire color image reproduction system is connected. According to the present invention, while the image data is being input to the image data storage means via the image data input bus, the image data is stored in the image data storage means via the image data output bus. While outputting, the CPU can access the memory in which the operating program is stored, the input / output device, and the like, and can improve the processing efficiency of the image processing device. In a preferred embodiment of the present invention, each unit of the image data storage means is R
At least two frame memory units having three frame memories for storing image data corresponding to (red), G (green), and B (blue) are provided, and each of the image data input bus and the image data output bus includes The frame memory unit is configured to be selectively connectable.

According to a preferred embodiment of the present invention, while outputting image data from a frame memory unit,
Since image data can be input and stored in another frame memory unit, color images can be photoelectrically read one after another to generate image data, which can be stored in the image data storage means. Therefore, the color image reproduction efficiency of the entire color image reproduction system can be significantly improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram of a color image reproduction system including an image processing apparatus according to a preferred embodiment of the present invention. As shown in FIG. 1, a color image reproduction system reads a color image and generates digitized image data, and an image reading device 1, and performs predetermined image processing on the image data generated by the image reading device 1. The image processing device 5 and the image output device 8 for reproducing a color image based on the image data subjected to the image processing by the image processing device. The image reading device 1 includes a transmission type image reading device which photoelectrically reads a color image recorded on a film F such as a negative film or a reversal film, and a reflection type image which photoelectrically reads a color image recorded on a color print P. By selectively connecting the reading device to the image processing device 5, both the color image recorded on the film F such as a negative film or a reversal film and the color image recorded on the color print P are reproduced. Is configured to be able to.

FIG. 2 is a schematic diagram of a transmissive image reading apparatus for a color image reproducing system which generates image data to be processed by the image processing apparatus according to the embodiment of the present invention. In FIG. 2, the transmission type image reading apparatus 1
0 irradiates a color image recorded on a film F such as a negative film or a reversal film with light,
A color image can be photoelectrically read by detecting light transmitted through the film.
1. A light amount adjustment unit 12 capable of adjusting the light amount of the light emitted from the light source 11, the light emitted from the light source 11
(Red), G (green) and B (blue) three color separation units, and a diffusion unit that diffuses the light so that the light emitted from the light source 11 is uniformly applied to the film F. 14, a CCD area sensor 15 for photoelectrically detecting the light transmitted through the film F, and a lens 16 for forming an image of the light transmitted through the film F on the CCD area sensor 15. When reading a color image, the CCD area sensor 15 sequentially transfers the image data of an odd field consisting of pixel data of an odd row of an image read photoelectrically and the image data of an even field consisting of pixel data of an even row. Is configured to.

The transmissive image reading device 10 further includes
An amplifier 17 for amplifying the R, G, and B image signals photoelectrically detected by the CCD area sensor 15, an A / D converter 18 for digitizing the image signal, and a digitization by the A / D converter 18. For the image signal
CC that performs correction processing for variations in sensitivity and dark current for each pixel
It is provided with a D correction means 19 and a log converter 20 for converting the image data of R, G, B into density data. The log converter 20 is connected to the interface 21. The film F is held by the carrier 22, and the carrier 2
The film F held at 2 is sent to a predetermined position by the driving roller 24 driven by the motor 23,
It is configured to be held in a stopped state, and when one color image is completely read, one frame is sent. In FIG. 2, reference numeral 25 denotes a screen detection sensor, which detects the density distribution of the color image recorded on the film F,
The detected density signal is output to the CPU 26 that controls the transmissive image reading apparatus 10. Based on this density signal, the CPU 26 calculates the image position of the color image recorded on the film F, and the image of the color image is obtained. When it is determined that the position has reached a predetermined position, the driving of the motor 23 is stopped.

FIG. 3 is a schematic diagram of a reflective image reading device 30 for a color image reproducing system which produces image data to be processed by the image processing device according to the preferred embodiment of the present invention. As shown in FIG. 3, the reflection-type image reading device 30 irradiates a color image recorded on the color print P with light, and detects the light reflected by the color print P to form a color image. The light source 31, the mirror 32 for reflecting the light emitted from the light source 31 and reflected on the surface of the color print P, and the light R, G of the light reflected on the surface of the color print P are configured to be photoelectrically readable. , A color balance filter 33 for adjusting the sensitivity of B, a light amount adjusting unit 34 capable of adjusting the light amount of the light reflected on the surface of the color print P, and C for photoelectrically detecting the light reflected by the color print P.
The lens 36 is provided with which the light reflected by the CD line sensor 35 and the color print P is imaged on the CCD line sensor 35. The CCD line sensor 35 is R,
A three-line sensor corresponding to the three colors of G and B is used. By moving the light source 31 and the mirror 32 in the direction of the arrow, the CCD line sensor 35 detects the reflected light reflected from the color print P. , The color image recorded on the color print P is two-dimensionally read.

The reflection type image reading device 30 further includes:
An amplifier 37 that amplifies the R, G, and B image signals photoelectrically detected by the CCD line sensor 35, an A / D converter 38 that digitizes the image signal, and a digitized by the A / D converter 38. For the image signal
CC that performs correction processing for variations in sensitivity and dark current for each pixel
It is provided with a D correction means 39 and a log converter 40 for converting the image data of R, G, B into density data. The log converter 40 is connected to the interface 41. In the reflective image reading device 30, the color print P
Is held stationary by a carrier (not shown),
The light source 31 and the mirror 32 are configured to be moved in the direction of the arrow by a driving unit (not shown). The reflective image reading device 30 is controlled by the CPU 46. 4 and 5 are block diagrams of the image processing apparatus 5 according to the preferred embodiment of the present invention. As shown in FIGS. 4 and 5, the image processing device 5 includes an interface 48 connectable to the interface 21 of the transmissive image reading device 10 or the interface 41 of the reflective image reading device 30.
An arithmetic mean calculation unit 49 for summing and averaging two adjacent pixel data values of the image data generated by the image reading apparatus 1 and sent for each line, and arithmetic mean calculation The first line buffer 50a and the second line buffer 50b that alternately store the pixel data in each line of the image data sent from the means 49, and the line data stored in the line buffers 50a and 50b. A first frame memory unit 51 and a second frame memory unit 52 which store image data corresponding to the color image of one frame transferred and recorded on the film F or the color image recorded on one color print P. And a third frame memory unit 53. Here, the first line buffer 50
The a and second line buffers 50b are configured to alternately store the odd-numbered pixel data of each line of the image data in one line buffer and the even-numbered pixel data of the other line buffer.

In the present embodiment, the color image recorded on the film F or the color image recorded on one color print P is once read by the image reading device 1 to generate digital image data. Then, based on the image data obtained by the first reading (preliminary reading), the image processing device 5 sets the image reading condition for the second reading (main reading),
The color image is read again (main reading) to generate digital image data.
The first frame memory unit 51 stores the image data obtained by the pre-reading, which is the first reading, and the second frame memory unit 52 and the third frame memory unit 53, the second reading, which is the main reading. The image data obtained by the above are respectively stored. FIG. 6 shows a first frame memory unit 51, a second frame memory unit 52 and a third frame memory unit 52.
3 is a block diagram showing details of the frame memory unit 53 of FIG. As shown in FIG. 5, the image processing device 5 processes the first frame memory unit 51, in order to process the image data generated by reading the color image.
The second frame memory unit 52 and the third frame memory unit 53 are R (red) and G, respectively.
R data memory 51R, G data memory 51G and B data memory 51B, R data memory 52R, G data memory 52G and B data memory 52B, and R data memory 53R that store image data corresponding to (green) and B (blue) , G data memory 53G and B data memory 53B. In FIG. 6, image data obtained by prefetching is input to the first frame memory unit 51, and the second frame memory unit 5
2 shows the state in which the image data stored in 2 is being output.

The image processing apparatus 5 includes a CPU 60 that controls the entire image processing apparatus 5. The CPU 60 can communicate with the CPU 26 that controls the transmissive image reading device 10 and the CPU 46 that controls the reflective image reading device 30 via a communication line (not shown), and controls the image output device 8 described later. CPU and communication line (not shown)
It is configured to be communicable via. The CPU 60
Based on the image data obtained by the pre-reading stored in the first frame memory unit 51, the image reading condition for the main reading of the color image and the image processing condition can be modified as necessary. Has been done. That is, the CPU 60 determines the image reading conditions for the main reading based on the image data obtained by the pre-reading so that the dynamic range of the CCD area sensor 15 or the CCD line sensor 35 can be efficiently used during the main reading. Then, the reading control signal is output to the CPU 26 of the transmissive image reading apparatus 10 or the CPU 46 of the reflective image reading apparatus 30.
When the reading control signal is input, the CPU 26 of the transmissive image reading apparatus 10 or the CPU 46 of the reflective image reading apparatus 30 controls the light amount adjusted by the light amount adjusting unit 12 or the light amount adjusting unit 34 and the CCD.
The storage time of the area sensor 15 or the CCD line sensor 35 is controlled. At the same time, the CPU 26, based on the obtained image data, makes it possible to reproduce a color image having the optimum density, gradation and color tone on the color paper, so that the first image processing means and the second image described later can be reproduced. A control signal for correcting the image processing condition such as the parameter of the image processing by the processing means is output to the first image processing means and the second image processing means as needed.

As described above, since the image data obtained by the pre-reading is used exclusively for determining the image reading condition and the image processing condition for the main reading, the data amount may be small, and As will be described later, in the present embodiment, the operator sets the image processing conditions by reproducing the color image on the CRT based on the image data obtained by the prefetching and observing the reproduced color image. It is configured so that the amount of image data obtained by prefetching is
The image processing device 5 reduces the color image to a reproducible amount of data on the CRT and stores it in the first frame memory unit 51. Therefore, in the transmissive image reading device 10, the CCD area sensor 15 transfers only the image data of the odd field or the even field in the pre-reading, and in the reflective image reading device 30, the light source 31 and the mirror are read in the pre-reading. Three
By doubling the moving speed of 2, that is, the sub-scanning speed, the image reading apparatus 1 is configured so that the data amount of the image data to be read is smaller than that in the case of the main reading, and the image processing is further performed. The averaging means 49 of the device 5
However, by adding the values of two adjacent pixel data of the image data sent for each line and averaging them to obtain one pixel data, the pixel data number of each line of the image data is 1 / It is configured to reduce to 2. further,
At the time of pre-reading, one of the pixel data of the odd line and the even line of the image data whose number of pixel data has been reduced to ½ by the arithmetic mean calculator 49 is alternately set to the first
Line buffer 50a and second line buffer 5
The number of lines of image data is set to 1 by transferring to 0b.
It is configured to decrease to / 2. That is, one of the pixel data of the odd line and the even line is transferred to the first line buffer 50a and the second line buffer 50.
By transferring to b, the number of lines of image data is 1 /
2, the odd-numbered pixel data of each line is supplied to one of the first line buffer 50a and the second line buffer 50b, and the even-numbered pixel data of each line is transferred to the first line buffer 50a. And to the other of the second line buffer 50b for storage, and then only the image data stored in one of the first line buffer 50a and the second line buffer 50b is stored in the first frame memory unit 51. By storing the data in each line, the number of pixel data in each line is further reduced to 1/2, and finally, the number of pixel data of the image data obtained by the pre-reading is reduced to 1/16. hand,
It is stored in the first frame memory unit 51. At the time of pre-reading, the number of pixel data in the image data is reduced as described above, so the second frame memory unit 5 for storing the image data obtained by the main reading is stored.
The second and third frame memory units 53 are image data obtained by reading a color image recorded on a film F such as a negative film or a reversal film or a color image recorded on a color print P. Has the capacity to store
As the first frame memory unit 51 for storing the image data obtained by the prefetching, one having a much smaller capacity than the second frame memory unit 52 and the third frame memory unit 53 is used.

The image processing apparatus 5 further adds a color image on a color paper to the image data stored in the second frame memory unit 52 and the third frame memory unit 53 with desired density, gradation and color tone. The image stored in the first image processing means 61 and the first frame memory unit 51 for performing image processing such as gradation correction, color conversion, and density conversion by a lookup table or matrix calculation so that the image can be reproduced. Image processing such as gradation correction, color conversion, and density conversion is performed on the data by a look-up table or matrix calculation so that a color image can be reproduced on a CRT screen described later with a desired image quality. The image processing means 62 is provided. The outputs of the second frame memory unit 52 and the second frame memory unit 53 are connected to the selector 55, and are stored in either the second frame memory unit 52 or the second frame memory unit 53 by the selector 55. Image data is selectively selected by the first image processing means 61.
It is configured to be inputted to. First frame memory unit 51, second frame memory unit 52
And the input bus 6 of the third frame memory unit 53
3 and the output bus 64, a data bus 65 is provided. The data bus 65 stores a CPU 60 that controls the entire color image reproduction system, a memory 66 that stores an operation program of the CPU 60, and image data. ,
A storable hard disk 67, a CRT 68, a keyboard 69, a communication port 70 connected to another color image reproduction system via a communication line, the CPU 26 of the transmissive image reading device 10 or the reflective image reading device 30.
A communication line with the CPU 46 is connected.

The first image processing means 61 is connected to the data synthesizing means 75, and the data synthesizing means 75 is connected to the synthetic data memory 76. Composite data memory 76
Is an R data memory 76R for storing image data such as figures and characters corresponding to red (R), green (G) and blue (B),
It is equipped with a G data memory 76G and a B data memory 76B, and synthesizes it with image data obtained by reading a color image recorded on the film F or the color print P, and outputs it on a color paper by an image output device 8 described later. When a color image is reproduced, image data such as figures and characters to be combined with the color image is stored. The data synthesizing means 75 is connected to the interface 77. FIG. 7 is a diagram schematically showing an image output device 8 for a color image reproduction system for reproducing a color image on a color paper based on image data processed by the image processing device according to the preferred embodiment of the present invention. Is. In FIG. 7, the image output device 8 includes an interface 78 that can be connected to the interface 77 of the image processing device 5, and a CPU 79 that controls the image output device 8.
And an image data memory 80 composed of a plurality of frame memories for storing image data input from the image processing device 5.
And a D / A converter 81 for converting image data into an analog signal, a laser light irradiation means 82, a modulator driving means 83 for outputting a modulation signal for modulating the intensity of the laser light, and the like. The CPU 79 is configured to be communicable with the CPU 60 of the image processing apparatus 5 via a communication line (not shown).

FIG. 8 is a schematic view of the laser light irradiation means 82. The laser light irradiation means 82 includes red semiconductor laser light sources 84a, 84b, 84c, and the semiconductor laser light source 8 is provided.
The laser light emitted from the laser light source 4b is converted into a green laser light by the wavelength conversion means 85, and the semiconductor laser light source 8
The laser light emitted by 4c is converted into blue laser light by the wavelength conversion means 86. Red laser light emitted from the semiconductor laser light source 84a, wavelength conversion means 8
The green laser light whose wavelength has been converted by 5 and the blue laser light whose wavelength has been converted by the wavelength converting means 86 respectively enter optical modulators 87R, 87G, 87B such as an acousto-optic modulator (AOM). The modulation signals are input to the optical modulators 87R, 87G, and 87B from the modulator driving means 83, and the intensity of the laser light is modulated according to the modulation signals. ing. The laser light whose intensity is modulated by the optical modulators 87R, 87G, and 87B is reflected by the reflection mirror 88R,
The polygon mirror 89 is reflected by 88G and 88B.
Incident on. The image output device 8 includes a magazine 91 that stores color paper 90 in a roll shape, and the color paper 90 is configured to be transported in the sub-scanning direction along a predetermined transport path. In the conveying path of the color paper 90, perforation means 92 for perforating a reference hole is provided at the side edge portion of the color paper 90 at intervals corresponding to the length of one color print. Inside, the conveyance of the color paper 90 and the driving of other means are synchronized with each other according to the reference hole.

The laser light modulated by the light modulators 87R, 87G, 87B is scanned in the main scanning direction by the polygon mirror 89, and the color paper 90 is exposed through the fθ lens 93. Here, color paper 90
Is transported in the sub-scanning direction, the entire surface is exposed by laser light. Here, the conveyance speed of the color paper 90 in the sub-scanning direction is the main scanning speed of the laser light,
That is, it is controlled by the CPU 79 so as to be synchronized with the rotation speed of the polygon mirror 89. The color paper 90 exposed by the laser light is processed by the development processing unit 9
4, a predetermined color developing process, a bleach-fixing process, and a washing process are performed, and a color image is reproduced on the color paper 90 based on the image data subjected to the image processing by the image processing device 5. Color paper 90 which has been subjected to color development processing, bleach-fixing processing and water washing processing by a color developing tank 94, a bleach-fixing tank 95 and a water washing tank 96.
Is sent to the drying section 97, and after being dried, one frame of a frame is driven by the cutter 98 driven in synchronization with the conveyance of the color paper 90 based on the reference hole formed in the side edge portion of the color paper 90. The film F is cut into a length corresponding to the color image recorded on the color print P or one color print P, and is sent to the sorter 99 so that the number of sheets corresponding to one film F or each customer is accumulated. Is configured.

A color developing tank 94 and a bleach-fixing tank 9 are provided here.
As the water washing tank 96, the drying unit 97, the cutter 98 and the sorter 99, those used in ordinary automatic developing machines can be used. FIG. 9 is a block diagram showing details of the first image processing means 61. FIG.
As shown in FIG. 1, the first image processing means 61 is a color density gradation conversion means 100 for converting density data, color data and gradation data of image data, and a saturation conversion for converting saturation data of image data. Means 101, digital magnification conversion means 102 for converting the number of pixel data of image data, frequency processing means 103 for performing frequency processing on image data, and dynamic range conversion means 104 for converting the dynamic range of image data are provided. A color image reproduction system including the transmissive image reading device 10 or the reflective image reading device 30 configured as described above, the image processing device 5 and the image output device 8 according to a preferred embodiment of the present invention is as follows. Then, the color image recorded on the film F or the color print P is read, image data is generated, image processing is performed on the image data, and the color image is reproduced on the color paper 90.

When reproducing a color image recorded on a film F such as a negative film or a reversal film, the transmissive image reading device 10 is connected to the interface 48 of the image processing device 5 via the interface 21. The film F is set on the carrier 22. When the film F is set on the carrier 22, C
A drive signal is output from the PU 60 to the motor 23, and the motor 23 drives the drive roller 24. As a result, the film F is conveyed in the direction of the arrow. Screen detection sensor 25
Detects the density distribution of the film F and outputs the detected density signal to the CPU 26. Based on this concentration signal, C
The PU 26 calculates the screen position of the color image recorded on the film F, and when the screen position of the color image reaches a predetermined position, stops driving the motor 23. As a result, the color image recorded on the film F is stopped at the predetermined screen position with respect to the CCD area sensor 15 and the lens 16. After that, light is emitted from the light source 11 at a predetermined timing, and the light amount is adjusted by the light amount adjusting unit 12. In the present embodiment, the color image recorded on one frame of the film is read twice, the image reading condition is determined based on the image data obtained by the first reading (prefetching), and the light amount adjusting unit is read. The light amount of the light applied to the film F and the accumulation time of the CCD area sensor 15 are adjusted by 12 so that the second reading (main reading) is performed. Therefore, at the time of pre-reading, the light emitted from the light source 11 is adjusted to a predetermined light amount by the light amount adjusting unit 12, and the color separation unit 13 adjusts R (red) and G.
(Green) and B (blue)
R (red) light is applied to the film F, and then G
The light of (green) and finally the light of B (blue) are respectively radiated to the film F, and the light transmitted through the film F is C
It is photoelectrically read by the CD area sensor 15. In this pre-reading, the CCD area sensor 15 is controlled by the CPU 26 to transfer only the image data corresponding to the color image of either the odd field or the even field to the amplifier 17. The number of lines of image data corresponding to the odd field or the even field is 1/2 of the number of lines of the read color image, and therefore the number of pixel data is 1.
/ 2.

The image data for one field generated by reading the color image by the CCD area sensor 15 is amplified by the amplifier 17 and then converted into a digital signal by the A / D converter 18. The image data converted into a digital signal is subjected to correction of variations in sensitivity and dark current for each pixel by the CCD correction means 19, converted into density data by the log converter 20, and then the interface 21 and the interface 48.
Only the image data of the odd field or the even field is sent to the image processing device 5 line by line via the. On the other hand, when reproducing the color image recorded on the color print P, the reflective image reading device 30 is connected to the interface 48 of the image processing device 3 via the interface 41, and the color print P is transferred by the carrier 42. Supported. The light emitted from the light source 31 is reflected on the surface of the color print P, passes through the mirror 32, enters the color balance filter 33, and R,
After the sensitivities of G and B are adjusted, the light amount adjustment unit 34 adjusts the light amount. As described above, in the pre-reading, the light emitted from the light source 31 is adjusted to a predetermined light amount by the light amount adjustment unit 34, and the CCD line sensor 35 including three line sensors corresponding to R, G, and B is used. Is received and photoelectrically read. Here, the light source 31 and the mirror 32 are moved at a predetermined speed in a direction indicated by an arrow in FIG. 3, that is, a sub-scanning direction by a driving unit (not shown),
As a result, the color image recorded on the color print P supported by the carrier (not shown) is two-dimensionally read, and the image data corresponding to R, G, and B is generated by the CCD line sensor 35. It At the time of pre-reading, the moving speed of the light source 31 and the mirror 32, that is,
The sub-scanning speed is set to twice as high as that in the main reading.

The image data corresponding to R, G and B generated by the CCD line sensor 35 is amplified by an amplifier 37 and then converted into a digital signal by an A / D converter 38. The image data converted into a digital signal is processed by the CCD correction means 39.
After being subjected to sensitivity variation and dark current correction for each pixel and converted into density data by the log converter 40, the log data is converted via the interface 41 and the interface 48.
Each line is sent to the image processing device 5. When the image processing device 5 receives the image data from the transmission type image reading device 10 or the reflection type image reading device 30, the arithmetic mean calculating means 49 causes two pixel data adjacent to the image data sent line by line. Are added and averaged to form one pixel data, so that the number of pixel data of each line of the image data is reduced to 1/2. Then
The CPU 60 alternately supplies only the pixel data of one of the odd line and the even line of the image data to the first line buffer 50a and the second line buffer 50b, that is, the odd-numbered pixel data of each line. Even-numbered pixel data of each line is supplied to one of the first line buffer 50a and the second line buffer 50b.
The first line buffer 50a and the second line buffer 50b are respectively stored in the other. Therefore, of the image data output from the arithmetic mean calculation processing means 49, only the image data of one of the odd line and the even line is transferred to the first line buffer 50a and the second line buffer 50b. The number of lines of the image data stored in the first line buffer 50a and the second line buffer 50b is halved.

At the time of pre-reading, the CPU 60
Connects one of the first line buffer 50a and the second line buffer 50b and the first frame memory unit 51 to the input bus 63, and connects the second frame memory unit 52 and the third frame memory. The unit 53 and the input bus 63 are controlled to be disconnected so that only the image data stored in the one line buffer 50a or 50b, that is, the odd-numbered pixel data of one of the odd line and the even line Alternatively, only the even-numbered pixel data is sequentially transferred to the first frame memory unit 51 as the pre-read image data. As a result, the number of pixel data in each line of image data is reduced to 1/2. In this way, the image data corresponding to the color image recorded on the film F of one frame or the color print P of one sheet is finally reduced to 1/16 in the number of pixel data to correspond to R, G and B. The image data to be reproduced are the R data memory 51R and the G data memory 51G of the first frame memory unit 51, respectively.
And B data memory 51B. Thus,
The image data read by the prefetch and stored in the first frame memory unit 51 is sent to the data bus 65 and analyzed by the CPU 60. The CPU 60
Based on the image data read by the pre-reading, the reading control signal is transmitted through the data bus 65 so that the color image is read by the main reading so as to be suitable for the dynamic range of the CCD area sensor 15. The image is output to the CPU 26 of the apparatus 10 or the CPU 46 of the reflection type image reading apparatus 30, and an image having optimum density, gradation and color tone can be reproduced on the color paper 90 based on the image data obtained by the main reading. First, the image reading conditions for the main reading are automatically determined.

CPU 26 of transmissive image reading device 10
Alternatively, the CPU 46 of the reflection-type image reading device 30 is C
Based on the reading control signal input from the PU 60, the film F is irradiated with a desired amount of light at the time of actual reading, or the desired amount of light reflected by the color print P is reflected by the CCD line sensor 35. The light amount adjusting unit 12 or the light amount adjusting unit 33 is controlled so that the light is received, and the accumulation time of the CCD area sensor 15 and the CCD line sensor 15 is adjusted. At the same time, the CPU 60, if necessary, according to the analysis result of the image data read by the prefetch,
A control signal is sent to the first image processing means 61 and the second image processing means 62 via the data bus 65, and image processing conditions such as image processing parameters are corrected. Further, the image data read by pre-reading and stored in the first frame memory unit 51 is sent to the second image processing means 62, and gradation correction, color conversion, density conversion, etc. are performed by a look-up table or matrix operation. After the image processing of CRT 68 is performed through the data bus 65,
And a color image is displayed on the screen of the CRT 74.

The operator can observe the color image displayed on the screen of the CRT 68 and operate the keyboard 69 as necessary to correct the image reading condition and / or the image processing condition for the main reading. it can. When the operator operates the keyboard 69 and inputs an instruction signal that the image reading condition and / or the image processing condition for the main reading should be corrected, the instruction signal is sent to the CPU 60 via the data bus 65. Is entered. CPU
60 generates a control signal based on the instruction signal and outputs it to the data bus 65, and the control signal is the CPU 26 of the transmissive image reading device 10 or the CPU 46 of the reflective image reading device 30 and / or the first image. It is sent to the processing means 60 and / or the second image processing means 61, and the image reading conditions and / or the image processing conditions are corrected. In this embodiment, the data bus 65 is
First frame memory unit 51, second frame memory unit 52, third frame memory unit 53
The image data is input to the first frame memory unit 51, the second frame memory unit 52, or the third frame memory unit 53 because it is formed separately from the input bus 63 and the output bus 64. The operator can input various instruction signals while the image data is being output, or while the image data is being output therefrom, and can reproduce a color image on the screen of the CRT 68.

In this way, when the image reading condition and / or the image processing condition for the main reading are determined by the pre-reading, the main reading is executed. When reading this book,
CCD line sensor 15 of the transmission type image reading device 10
Generates image data of an odd field and an even field of a color image recorded on one frame of the film F. Further, the CCD line sensor 35 of the reflection image reading device 30 operates at a low sub-scanning speed to produce one color image. The color image recorded on the print P is read to generate image data, and the image data is input to the image processing apparatus 5 line by line via the interface 21 or the interface 41 and the interface 48. The image data read by the main reading input to the image processing device 5 is input to the color average calculating means 49. At the time of the main reading, the addition calculating processing means 49 does not perform addition processing on the image data, All the input image data is transferred to the first line buffer 50a and the second line buffer 50b, line by line, and stored in the first line buffer 50a and the second line buffer 50b alternately. At this time, the CPU 60 supplies the odd-numbered pixel data of each line of the image data to one of the first line buffer 50a and the second line buffer 50b and the even-numbered pixel data of the first line buffer 5b.
0a and the second line buffer 50b are controlled to be stored in the other respectively.

At the time of actual reading, the CPU 60
Of the second frame memory unit 52 and the third frame memory unit 53, only the frame memory unit capable of storing image data is connected to the input bus 63, and the other frame memory unit and the first frame memory unit 51. The input bus 63 is controlled so as to be disconnected. That is, when a color image is read, only one of the first frame memory unit 51, the second frame memory unit 52, and the third frame memory unit 53 is connected to the input bus 63. The image data is stored only in the frame memory unit. The image data corresponding to the color image of the frame having the film F or the color image recorded on one color print P obtained by the main reading is output to the first image through the output bus 64 and the selector 55. While being transferred to the processing means 61, it is possible to execute the pre-reading of the color image recorded on the next frame of the film F or the color image recorded on another color print P, and further, it is obtained by the main reading, While transferring the image data of the color image recorded on the frame having the film F or the color image recorded on the color print P per sheet to the first image processing means 61 via the output bus 64 and the selector 55. , The pre-reading of the color image recorded on the next frame of the film F or the color image recorded on another color print P is completed. And to be able to perform real reading of the color image of the next frame of the film F, in order to improve the data processing efficiency of a color image reproduction system.

Therefore, the image data stored in the first line buffer 50a and the second line buffer 50b are alternately transferred to the second frame memory unit 52 or the third frame memory unit 53,
The image data corresponding to R (red) is the R data memory 52R.
Or 53R, image data corresponding to G (green) is stored in the G data memory 52G or 53R, and image data corresponding to B (blue) is stored in the B data memory 52B or 53B. Unit 52
Alternatively, the third frame memory unit 53 stores image data corresponding to a color image recorded on one frame of film F or one color print P. After the image data obtained by the main reading is stored in the R data memory 52R or 53R, the G data memory 52G or 53R, the B data memory 52B or 53B of the second frame memory unit 52 or the third frame memory unit 53 The image data is output to the first image processing means 61. Here, the second frame memory unit 52 or the third frame memory unit 5
The selector 55 is controlled by the CPU 60 so that only the image data stored in any one of 3 is output to the first image processing means 61.

In FIG. 10, while the image data read by the main reading is stored in the third frame memory unit 53, the image data stored in the second frame memory unit 52 is processed by the first image processing. The state of outputting to the means 61 is shown. First image processing means 61
In accordance with the lookup table, the density data of the image data,
Color data and gradation data are converted, and the saturation conversion means 1
01, the saturation data of the image data is converted according to the matrix calculation. Next, after the digital magnification conversion means 102 increases or decreases the number of pixel data of the image data according to the size of the color image output to the color paper 90, the frequency processing means 103 performs frequency processing such as sharpness enhancement on the image data. Further, the dynamic range conversion means 104 converts the dynamic range conversion and outputs the converted data to the data synthesizing means. When the operator uses the keyboard 69 to input an instruction signal to the effect that data should be combined with the image data obtained by reading the color image, C
A data synthesis signal is output from the PU 60 to the data synthesis means 75, and the data synthesis means 75 outputs the synthesized data memory 7
6, the image data such as figures and characters to be combined with the image data obtained by reading the color image is read and combined, and when no instruction signal is input to the keyboard 69, no processing is executed. . After that, the image data is output from the data synthesizing means 75 to the image output device 8.

From the data synthesizing means 75 of the image processing apparatus 5, an interface 77 and an interface 78 are provided.
When the image data is input to the image output device 8 via the, the input image data is stored in the image data memory 80 including a plurality of frame memories. Since the reading operation of the color image recorded on the film F or the color print P and the operation of the image output device 8 are not synchronized with each other, the image reading device 1 reads them.
The image data subjected to the image processing by the image processing device 5 is input to the image processing device 8 regardless of the processing of the image output device 8. Therefore, in the present embodiment, the image data memory 80 that stores the image data input from the image processing device 5 is configured by a plurality of frame memories, and the image data is sequentially stored in the frame memory. Even if the reading device 1 reads an image at high speed and the image data is sent to the image output device 8, the image output device 8 can reproduce the color image on the color paper 90 at a predetermined speed. I guarantee that you can. Each means in the image output device 8 is a CPU
When the color paper 90 is pulled out from the magazine 91 and is conveyed in the sub-scanning direction along a predetermined conveyance path, it is configured so as to be operated in synchronization with each other by 60. The image data is read from the image data memory 80, converted into an analog signal by the D / A converter 81, and input to the modulator driving means 86,
The modulation signal is generated and the semiconductor laser light source 84
The red laser light from a is emitted from the semiconductor laser light sources 84b, 84.
Infrared laser light is emitted from the semiconductor laser light source 8
The laser light emitted from 4b is converted into a green laser light by the wavelength conversion means 85, and the semiconductor laser light source 84
The laser light emitted by c is converted into blue laser light by the wavelength converting means 86, and then the red laser light is applied to the modulator 87R, the green laser light is applied to the optical modulator 87G, and the blue laser light is applied to the optical modulator. 87B, respectively. Modulation signals are input to the optical modulators 87R, 87G, and 87B from the modulator driving means 83, and their intensities are modulated according to the modulation signals, that is, image data,
The laser light is reflected by the reflection mirrors 88R, 87G, 87B and enters the polygon mirror 89. The polygon mirror 89 is rotated at a predetermined speed, and the laser light is reflected by the polygon mirror 89 on the surface of the color paper 90 being conveyed in the sub scanning direction by the fθ lens 9.
The main scanning is performed via 3. Therefore, the color paper 90 is two-dimensionally exposed by the R, G, and B laser beams. Since the color paper 90 is conveyed in the sub-scanning direction in synchronization with the rotation of the polygon mirror 89, the color paper 90 corresponds to the color image recorded on the film F or the color print P.
Will be exposed by the laser light.

The color paper 90 thus exposed by the laser beam is sent to the color developing tank 94 for color development, and is bleach-fixed in the bleach-fixing tank 95.
A color image is reproduced on the color paper 90 on the basis of the image data which has been washed in the water 6 and image-processed by the image processing device 5. The color paper 90 which has been subjected to color development processing, bleach-fixing processing and water washing processing has a drying section 97.
After being sent to and dried, the cutter 98 driven in synchronism with the conveyance of the color paper 90 based on the reference hole formed in the side edge portion of the color paper 90 drives the film F of one frame F or one sheet. Is cut into a length corresponding to the color image recorded on the color print P, is sent to the sorter 99, and is accumulated for each number of sheets corresponding to one film F or for each customer. According to the present embodiment, since the second frame memory unit 52 and the third frame memory unit 53 are provided as the frame memory units that store the image data obtained by the main reading, the second frame memory unit 52 or third
While the image data stored in the frame memory unit 53 is being output to the first image processing means 61, the image data generated by the image reading device 5 is used as the third frame memory unit 53 or the second image data. The image can be input to and stored in the frame memory unit 52, and the image reading device 5 sequentially reads the color images recorded on the film F or the color print,
Image data is generated and the second frame memory unit 5
Since it can be stored in the second or third frame memory unit 53, the color image reproduction speed of the entire color image reproduction system can be improved.

According to the present embodiment, the first frame memory unit 51, the second frame memory unit 52 and the third frame memory unit 53 are provided separately from the data bus 65 to which the CPU 60 is connected. , An input bus 63 for inputting image data and an output bus 64 for outputting image data from them are provided, so that the first frame memory unit 51, the second frame memory unit 52 or the third frame memory unit 53 is provided. While the image data is being input to or output from, the CPU 60 sets the data bus 65
It is possible to access the other means via the, and execute the necessary control, and it is possible to greatly improve the processing efficiency of the image data. The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say. For example, in the above-described embodiment, the CPU 26 and the CPU 4 are based on the image data obtained by the prefetching.
6, the light amount adjusting unit 12 and the light amount adjusting unit 34 are controlled to adjust the light amount in the main reading, and the CCD area sensors 15 and C in the main reading are adjusted.
Although the accumulation time of the CD line sensor 35 is controlled, the light amount adjusting unit 12 and the light amount adjusting unit 34 may be controlled to adjust only the light amount in the main reading, or the CCD area sensor 15 in the main reading.
Alternatively, only the storage time of the CCD line sensor 35 may be controlled. Furthermore, in addition to or instead of these, the clock speeds of the CCD area sensor 15 and the CCD line sensor 35 may be controlled.

In the above embodiment, the reflective image reading device 10 uses the CCD line sensor 35 to read a color image.
A CCD area sensor may be used instead of the line sensor 35. Further, in the above embodiment, each set is R (red), G (green), B as a frame memory for storing the image data obtained by the main reading.
A second frame memory unit 52 and a third frame memory having a frame memory for storing image data obtained by reading a color image recorded on one frame F or a color print corresponding to (blue) Although the unit 53 is provided, three or more sets of frame memory units may be provided as a frame memory for storing the image data obtained by the main reading, if necessary. Further, in the above embodiment, the first image processing means 61 is the color density gradation converting means 100, the saturation converting means 101, the digital magnification converting means 102, the frequency processing means 103 and the dynamic range converting means 104.
The input image data is configured to undergo color density gradation conversion, saturation conversion, digital magnification conversion, frequency processing, and dynamic range conversion in this order, but prior to frequency processing, If the magnification conversion is performed, the order of image processing by other processing means can be arbitrarily changed.

Further, in the above embodiment, the color image is reproduced on the color paper 90, but the color image is reproduced only on the CRT 68 and the color paper 9 is reproduced.
It may not be played back above zero. Further, in the present invention, the term "means" does not necessarily mean physical means, but also includes the case where the function of each means is realized by software. Further, the function of one means may be realized by two or more physical means, or the functions of two or more means may be realized by one physical means.

[Brief description of the drawings]

FIG. 1 is a block diagram of a color image reproduction system including an image processing device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a transmissive image reading apparatus for a color image reproducing system that generates image data to be processed by the image processing apparatus according to the embodiment of the present invention.

FIG. 3 is a schematic diagram of a reflective image reading apparatus for a color image reproducing system that generates image data to be processed by the image processing apparatus according to the embodiment of the present invention.

FIG. 4 is a block diagram of an image processing apparatus according to an embodiment of the present invention.

FIG. 5 is a block diagram of an image processing apparatus according to an embodiment of the present invention.

FIG. 6 shows a first frame memory unit, a second frame memory unit
3 is a block diagram showing details of a frame memory unit and a third frame memory unit of FIG.

FIG. 7 is a schematic diagram of an image output device for a color image reproduction system which reproduces a color image on a color paper based on image data processed by the image processing device according to the preferred embodiment of the present invention. Is.

FIG. 9 is a schematic view of a laser light irradiation unit of the image output device.

FIG. 9 is a block diagram showing details of first image processing means.

FIG. 10 shows a first frame memory unit,
It is a block diagram which shows the detail of a 2nd frame memory unit and a 3rd frame memory unit.

[Explanation of symbols]

 F film P color print 1 image reading device 5 image processing device 8 image output device 41 reading control means 50 line buffer 51 first frame memory unit 52 second frame memory unit 53 third frame memory unit 60 CPU 61 first Image processing means 62 second image processing means 63 input bus 64 output bus 65 data bus 66 memory 67 hard disk 68 CRT 75 data synthesizing means 76 synthetic data memory 80 image data memory 81 D / A converter 82 laser light irradiating means 83 Modulator driving means 90 Color paper 91 Magazine 92 Perforating means 93 fθ lens 94 Color developing tank 95 Bleach-fixing tank 96 Rinsing tank 97 Drying section 98 Cutter 99 Sorter

Claims (2)

[Claims] 1. A color image is read photoelectrically and converted into a digital signal to obtain image data, which is stored in an image data storage means, and the image data stored in the image data storage means is subjected to image processing. In an image processing device for a color image reproduction system for reproducing a color image, an image data input bus for inputting image data to the image data storage means, and an image data output bus for outputting image data from the image data storage means And an image data input bus and an image data output bus provided independently of a bus to which a CPU for controlling the entire color image reproduction system is connected. 2. The image data storage means has at least two frame memory units, each unit having three frame memories for storing image data corresponding to R (red), G (green) and B (blue). The image processing apparatus according to claim 1, wherein the image data input bus and the image data output bus are configured to be selectively connectable to each frame memory unit.