JPH09116660A - Picture processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attain version-up by making respective picture processing means for processing pictures into a module and also providing a buffer memory between the adjacent modules. SOLUTION: The picture processing means 61 is provided with a color density gradation converting means 100, a saturation converting means 101, a digital magnification converting means 103 and a frequency processing means 104. They are made into a module and picture data outputted from frame memory units 52 and 53 is converted in accordance with a function. The converting means 100 converts the level of a color tone and gradation signal and the converting means 101 converts the saturation signal level of picture data. The converting means 103 converts picture data and the processing means 104 executes a frequency processing such as edge emphasis in picture data. Buffer memories 105-109 are provided after the modules 100, 101, a low-pass filter and the processing means 104 and between the modules 103 and 104, storage is executed temporarily after the processing and transmission is executed to the succeeding processing means.

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, to image data obtained by photoelectrically reading a color image and converting it into a digital signal to obtain an image in a frame memory or the like. The present invention relates to an image processing apparatus for a color image reproduction system which reproduces a color image by performing image processing on the image data stored in the data storage means and stored in the image data storage means.

[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, stored as image data in image data storage means such as a frame memory, and further, image processing is performed on the image data stored in the image data storage means. Recording material such as color paper or CRT
There has been proposed a color image reproducing system for reproducing on a display means such as. According to this color image reproduction system, even if a color image is photographed under unsuitable photographing conditions such as underexposure or overexposure and recorded on a negative film, reversal film or color print, image processing is performed on the image data. Can be reproduced as a color image having a desired color and gradation, and a color image recorded on a negative film, a reversal film or a color print can be reproduced with a different color and gradation as desired. Is desirable because it can be reproduced as a color image having

[0003]

An image processing apparatus for such a color image reproducing system executes image processing such as color density gradation conversion, saturation conversion, digital magnification conversion, and frequency processing of image data. Generally, image processing means is provided and each of these image processing means is configured to execute respective processing in synchronization. On the other hand, in such an image processing apparatus, it is desirable that the design of each image processing unit included in the image processing apparatus is appropriately changed so that the version can be always upgraded. However, each image processing means
When it is configured to execute the respective processes in synchronization, when the design of a certain processing means is changed and the version of the image processing apparatus is upgraded, all the image processing means are synchronized. In order to operate, the design of other image processing means must be changed, and each image processing means is modularized and only the module is replaced, so that the image processing device can be easily upgraded. There was a problem that it could not be planned. The present invention photoelectrically reads a color image, stores the image data obtained by converting it into a digital signal in an image data storage unit, performs image processing on the image data stored in the image data storage unit, An object of the present invention is to provide an image processing device for a color image reproducing system which reproduces a color image and which can be easily upgraded.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
This is achieved by modularizing each image processing unit that executes image processing and providing a buffer memory between adjacent modules. According to the present invention, when the design of an image processing unit is changed to upgrade the version of the image processing unit, the version of the image processing unit can be easily updated by simply replacing the module including the image processing unit. It is possible to improve. In a preferred embodiment of the present invention, the image processing apparatus includes, as the image processing means, a color density gradation converting means for converting a color tone signal level, a density signal level and a gradation signal level of the image data, and a saturation of the image data. It includes digital magnification converting means for converting the number of pixel data of image data for converting the signal level and frequency processing means for performing frequency processing such as edge enhancement on the image data. Image data obtained by photoelectrically reading a color image and converting it into a digital signal is stored in image data storage means, and image data stored in the image data storage means is subjected to image processing to reproduce a color image. It is desirable that the color image reproduction system includes a digital magnification conversion unit that converts the number of pixel data of image data according to the size of the color image to be reproduced. However, in this digital magnification conversion means, when the number of pixel data is increased, the input speed of image data is decreased, and when the number of pixel data is decreased, the input speed of image data is increased. Although necessary, in the preferred embodiment of the present invention, since the buffer memory is provided, it is possible to easily provide the digital magnification conversion means for converting the pixel data number of the image data, and thus the usefulness of the color image reproduction system. It becomes possible to improve.

[0005]

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 are provided. 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. The transmissive image reading device 10 further includes a C
An amplifier 17 for amplifying the R, G, and B image signals photoelectrically detected by the CD area sensor 15, an A / D converter 18 for digitizing the image signal, and a digitization by the A / D converter 18. A CCD that performs correction processing on variations in sensitivity and dark current for each pixel for the generated image signal
A correction unit 19 and a log converter 20 for converting the R, G, and B image data into density data are provided. The log converter 20 is connected to the interface 21.

The film F is held by the carrier 22, and the film F held by the carrier 22 is the motor 2
The driving roller 24 driven by 3 feeds the image to a predetermined position, holds it in a stopped state, and when the reading of the color image of one frame is completed, the image is fed by one frame. In FIG. 2, reference numeral 25 is a screen detection sensor, which detects the density distribution of the color image recorded on the film F and outputs the detected density signal to the CPU 26 which controls the transmissive image reading apparatus 10. Based on this density signal, the CPU 26 calculates the screen position of the color image recorded on the film F, and when determining that the screen position of the color image has reached a predetermined position, the motor 23
Is configured to be stopped. FIG. 3 shows an image processing apparatus according to a preferred embodiment of the present invention.
1 is a schematic diagram of a reflective image reader for a color image reproduction system that produces image data to be processed. As shown in FIG. 3, the reflection-type image reading device 30 includes
By irradiating the color image recorded on the color print P with light and detecting the light reflected by the color print P, the color image can be photoelectrically read, and the light source 31 and the light source 31 are provided. Mirror 3 that reflects the light emitted from the surface and reflected on the surface of the color print P
2. R, G of the light reflected on the surface of the color print P,
A color balance filter 33 for adjusting the sensitivity of B, a light quantity adjusting unit 34 capable of adjusting the quantity of light reflected on the surface of the color print P, and a CCD line sensor 35 for photoelectrically detecting the light reflected by the color print P. And a lens 36 for focusing the light reflected by the color print P on the CCD line sensor 35. CC
The D line sensor 35 has three colors corresponding to three colors of R, G, and B.
The color image recorded on the color print P is configured by a line sensor, and the CCD line sensor 35 detects the reflected light reflected from the color print P while moving the light source 31 and the mirror 32 in the direction of the arrow. Is read two-dimensionally.

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.
The image data is generated by the image reading apparatus 1, and the values of four adjacent pixel data of the image data which are sent line by line are added and averaged to obtain one pixel data and the image data. A first frame buffer 50a and a second line buffer 50b, which are alternately stored for each line, and line data stored in the line buffers 50a and 50b are transferred, and one frame of color image recorded in the film F is transferred. Alternatively, it is provided with a first frame memory unit 51, a second frame memory unit 52 and a third frame memory unit 53 which store image data corresponding to a color image recorded on one color print P.

In this embodiment, one frame of color image recorded on the film F or 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. 6, since the image processing device 5 processes the image data generated by reading the color image, the first frame memory unit 51,
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 or the CPU 46 that controls the reflective image reading device 30 via a communication line (not shown), and also controls the image output device 8 described later. It is configured to be communicable with the CPU via a communication line (not shown). CPU 60
On the basis of the image data obtained by the pre-reading stored in the first frame memory unit 51, the image reading condition for performing the main reading of the color image and the image processing condition can be modified as necessary. Is configured. 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 60, 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 used. 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 reads only the image data of the odd field or the even field in the pre-reading, and in the reflective image reading device, the light source 31 and the mirror 32 are read in the pre-reading.
The image reading apparatus 1 is configured so that the data amount of the image data to be read is reduced by doubling the moving speed, that is, the sub-scanning speed, and further, the image processing apparatus. Arithmetic mean calculation means 4 of 5
9 is the adjacent 4 of the image data sent line by line
By adding the values of one pixel data and averaging them to obtain one pixel data, the number of pixel data of each line of the image data is reduced to 1/4, and the first line buffer 50
a, the second line buffer 50b is alternately stored for each line, and one line buffer 50a or 50
By storing only the image data stored in b in the first frame memory unit 51, the image processing device 5 reduces the number of pixel data of the image data obtained by the pre-reading to 1/16. It is configured. Therefore, the second frame memory unit 52 and the third frame memory unit 53 for storing the image data obtained by the actual reading are the color image for one frame recorded on the film F such as the negative film or the reversal film or one frame image. The first frame memory unit 51 has a capacity capable of storing the image data obtained by reading the color image recorded on the color print P. However, the first frame memory unit 51 stores the image data obtained by the pre-reading. , Which has a much smaller capacity than the second frame memory unit 52 and the third frame memory unit 53.

The image processing apparatus 5 further uses the image data stored in the second frame memory unit 52 and the third frame memory unit 53 to obtain a color image on a color paper 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 third frame memory unit 53 are connected to the selector 55, and 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 R (red), G (green) and B (blue),
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. Image data such as figures and characters to be combined with the color image when the color image is reproduced is stored. The data synthesizing means 75 is connected to the interface 77. FIG. 7 is a schematic diagram of an image output device 8 for a color image reproduction system that 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.
In FIG. 7, the image output device 8 is an interface 78 that can be connected to the interface 77 of the image processing device 5.
A CPU 79 for controlling the image output device 8, an image data memory 80 including a plurality of frame memories for storing the image data input from the image processing device 5, and a D / A converter for converting the image data into an analog signal. 81, a laser light irradiation means 82, and a modulator driving means 83 for outputting a modulation signal for modulating the intensity of the laser light. CP
The U79 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 and 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 conveyance path of the color paper 90, perforation means 92 for perforating a reference hole is provided at the side edge of the color paper 90 at intervals corresponding to the length of one color print. In the inside of 8, the color paper 90
Is synchronized with the driving of other means.

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 or a length corresponding to the color image recorded on one color paper P is cut and 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 of the image processing apparatus according to the embodiment of the present invention. As shown in FIG. 9, the first image processing means 61 is obtained by the main reading,
Color density gradation converting means 100 for converting the color tone signal level, the density signal level and the gradation signal level of the image data output from the second frame memory unit 52 or the third frame memory unit 53, and the saturation of the image data. Saturation conversion means 101 for converting the signal level, low-pass filter 10 for cutting high frequency components in the image data
2. Digital magnification conversion means 103 for converting the number of pixel data of image data and frequency processing means 104 for performing frequency processing such as edge enhancement on the image data so as to match the size of the color image to be output, Between the density gradation converting means 100 and the saturation converting means 101, between the saturation converting means 101 and the low-pass filter 102, between the low-pass filter 102 and the digital magnification converting means 103.
Between the digital magnification conversion means 103 and the frequency processing means 104 and after the frequency processing means 104, respectively, buffer memories 105, 106, 107 and 10 respectively.
8 and 109 are provided. The image data is sent line by line to each processing means, processed, temporarily stored in each buffer memory, and then sent to the next processing means or the processing means next to the first image processing means 61. It is configured to be. In this embodiment, the color density gradation converting means 100, the saturation converting means 101, the low-pass filter 102, and the digital magnification converting means 103.
Also, the frequency processing means 104 are modularized, and are configured to be replaceable in module units.

A color image reproducing system including the transmissive image reading device 10 or the reflective image reading device 30 having the above-described configuration, the image processing device 5 according to the preferred embodiment of the present invention, and the image output device 8 is as follows. As described above, 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 used.
Is connected to the interface 48 of the image processing apparatus 5 via the interface 21, and the film F is set on the carrier 22. When the film F is set on the carrier 22, a drive signal is output from the CPU 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. The screen detection sensor 25 detects the density distribution of the film F,
The detected density signal is output to the CPU 26. Based on this density signal, the CPU 26 calculates the screen position of the color image recorded on the film F, and when it determines that the screen position of the color image has reached a predetermined position, stops the drive of the motor 23. As a result, the color image recorded on the film F is transferred to the CCD area sensor 15 and the lens 16,
It is stopped at a predetermined screen position. 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 this embodiment, the color image recorded on one frame of the film is 2
Image reading conditions are determined based on the image data obtained by the first reading (pre-reading), and the light amount adjusting unit 12 causes the film F to be read.
The second reading (actual reading) is performed by adjusting the light amount of the light radiated to and the storage time of the CCD area sensor 15. 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 adjustment unit 12, and the color separation unit 13 adjusts the three colors of R (red), G (green), and B (blue). First, R (red) light is applied to the film F, and then G (green) light is finally irradiated to B.
The light of (blue) is applied to the film F, and the light transmitted through the film F is photoelectrically read by the CCD area sensor 15.

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, and after being converted to density data by the log converter 20, 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 5 via the interface 41, and the color print P is transferred to the carrier. Supported by 42. 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 be higher than that during 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 the variation of the sensitivity for each pixel and the correction of the dark current, the log converter 40 converts the density data into density data, and then, 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 transmissive image reading device 10 or the reflective image reading device 30, the averaging calculation means 49 causes the adjoining four pixels of the image data sent line by line. By adding the data values and averaging them to obtain one pixel data, the number of pixel data of each line of the image data is reduced to 1/4, and the first line buffer 50a and the second line buffer 50b are processed. ,
Alternately stored for each line. Here, during pre-reading, the CPU 60 connects only the first frame memory unit 51 to the input bus 63, and connects the second frame memory unit 52 and the third frame memory unit 53 to the input bus 63. Is controlled so that the line buffer 50a or 5
Only the image data stored in 0b is sequentially transferred to the first frame memory unit 51 line by line as preread image data. Thus, the image data corresponding to the color image recorded on the film F of one frame or the color print P of one sheet has the number of pixel data of 1 /
16 as the image data corresponding to R, G, and B, respectively, as R data memory 51R, G data memory 51G, and B of the first frame memory unit 51.
It is stored in the data memory 51B.

In this way, the first read is performed by the prefetch.
The image data stored in the frame memory unit 51 is sent to the data bus 65 and analyzed by the CPU 60. Based on the image data read by the pre-reading, the CPU 60 transmits the read control signal 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. Of the image reading apparatus 10
CPU of the PU 26 or the reflection type image reading device 30
46 and outputs the image reading conditions for the main reading automatically so that the image having the optimum density, gradation and color tone can be reproduced on the color paper 90 based on the image data obtained by the main reading. To decide. The CPU 26 of the transmissive image reading device 10 or the CPU 46 of the reflective image reading device 30 uses the reading control signal input from the CPU 60 to irradiate the film F with a desired amount of light during the main reading,
Alternatively, the light amount adjusting unit 12 or the light amount adjusting unit 3 is set so that the desired amount of light reflected by the color print P is received by the CCD line sensor 35.
3 is controlled 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, depending on the analysis result of the image data read by the pre-reading, if necessary, via the data bus 65, the first image processing means 6
Sending a control signal to the first and second image processing means 62,
Correct image processing conditions such as image processing parameters.
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 is performed, the CRT is sent via the data bus 65.
68, and a color image is displayed on the screen of the CRT 74. The operator observes the color image displayed on the screen of the CRT 68 and, if necessary, the keyboard 6
9 can be operated to modify the image reading condition and / or the image processing condition for the main reading. 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. CPU6
0 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 reflective image reading device 3.
0 CPU 46 and / or first image processing means 6
0 and / or sent to the second image processing means 61,
Image reading conditions and / or image processing conditions are modified. In this embodiment, the data bus 65 is the first
Of the first frame memory unit 51, the second frame memory unit 52, and the third frame memory unit 53 are formed separately from the input bus 63 and the output bus 64. , The second frame memory unit 52 or the third
The operator can input various instruction signals while inputting to the frame memory unit 53 or while outputting image data from them, and
A color image can be reproduced on the screen of the CRT 68.

In this way, when the image reading conditions and / or the image processing conditions 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 averaging arithmetic operation unit 49, but during the main reading, the addition processing operation unit 49 does not perform addition processing on the image data, The input image data is transferred to the first line buffer 50a and the second line buffer 50b alternately line by line. During the main reading, the CPU 60 causes the second frame memory unit 52 and the third frame memory unit 5 to operate.
Among the three, only the frame memory unit capable of writing image data is connected to the input bus 63, and the connection between the other frame memory unit and the first frame memory unit 51 and the input bus 63 is disconnected. Has been done. 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. This is the image data corresponding to the color image recorded on the frame with the film F or the color image recorded on one color print P obtained by the actual reading through the output bus 64 and the selector 55. While being transferred to the first image 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 by the main reading. Image data corresponding to the obtained color image recorded on a frame of the film F or the color image recorded on one color print P is output to the first image processing means via the output bus 64 and the selector 55. During the transfer to 61, the color image recorded on the next frame of the film F or the color image recorded on another color print P is transferred. Data reading efficiency of the color image reproducing system can be achieved by completing the reading and executing the main 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 to improve. Therefore, one line at a time, alternately,
The image data stored in the first line buffer 50a and the second line buffer 50b is transferred to the second frame memory unit 52 or the third frame memory unit 53, and the image data corresponding to R (red) is R
Image data corresponding to G (green) is stored in the data memory 52R or 53R, and G (green) image data is stored in the G data memory 52G or 53R.
The image data corresponding to B (blue) is the B data memory 52B.
Alternatively, image data corresponding to a color image stored in the second frame memory unit 52 or the third frame memory unit 53 and recorded in one frame F or one color print P is stored in the second frame memory unit 52 or the third frame memory unit 53, respectively. Remembered.

The image data obtained by the main reading is the R data memory 52R or 53 of the second frame memory unit 52 or the third frame memory unit 53.
After being stored in the R, G data memory 52G or 53R, B data memory 52B or 53B, the image data is
It is output to the first image processing means 61. Here, C is set so that only the image data stored in either the second frame memory unit 52 or the third frame memory unit 53 is output to the first image processing means 61.
The PU 60 controls the selector 55. First
The image data input to the image processing means 61 is sent to the color density gradation processing means 100 line by line, and the color density gradation processing means 100 performs color tone conversion according to the lookup table. , Buffer memory 105
After being stored once, the saturation conversion means 101 converts the saturation data of the image data according to the matrix calculation, and temporarily stores it in the buffer memory 106. Then, with the low-pass filter 102,
The high frequency components of the image data are cut and stored in the buffer memory 107. Further, the image data of one line is sent from the buffer memory 107 to the digital magnification conversion means 103, and the digital magnification conversion means 103 converts the number of pixel data of the image data so as to match the size of the color image to be output. It is stored in the buffer memory 108. The one-line image data stored in the buffer memory 108 is input to the frequency processing unit 104, subjected to frequency processing such as edge enhancement by the frequency processing unit 104, and stored in the buffer memory 109.

The image data stored in the buffer memory 109 after being subjected to image processing by the first image processing means 61 is output to the data synthesizing means 75. 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, the CPU 60 causes the data combining means 7 to operate.
5, the data synthesis signal is output to the data synthesis means 75.
Reads from the composite data memory 76 the image data such as a figure or a character to be combined with the image data obtained by reading the color image and combines them. On the other hand, when no instruction signal is input to the keyboard 69, Also, the process of is not executed. Then, the image data is output from the data synthesizing means 75.
It is output to the image output device 8. When image data is input from the data synthesizing means 75 of the image processing device 5 to the image output device 8 via the interface 77 and the interface 78, the input image data is an image composed of a plurality of frame memories. It is stored in the data memory 80. Here, the reading operation of the color image recorded on the film F or the color print P and the image output device 8 are performed.
The image data read by the image reading device 1 and subjected to the image processing by the image processing device 5 are not synchronized with each other regardless of the processing of the image output device 8.
It is input to 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. With the image reading device 1,
Even if the image is read at high speed and the image data is sent to the image output device 8, it is guaranteed that the image output device 8 can reproduce the color image on the color paper 90 at a predetermined speed. ing.

Each means in the image output device 8 is a CPU 79.
When the color paper 90 is pulled out from the magazine 91 and conveyed in the sub-scanning direction along a predetermined conveyance path, the image is synchronized with the image. Image data is read from the data memory 80, converted into an analog signal by the D / A converter 81, and input to the modulator driving means 86 to generate a modulation signal, and at the same time, the semiconductor laser light source 84a.
Red laser light from the semiconductor laser light sources 84b, 84c
Infrared laser light is emitted from the semiconductor laser light source 84
The laser light emitted from the semiconductor laser light source 84c is converted into a green laser light by the wavelength conversion means 85, and the semiconductor laser light source 84c
The laser light emitted by the laser light is converted into blue laser light by the wavelength conversion means 86, and then the red laser light is supplied to the modulator 87R, the green laser light is supplied to the optical modulator 87G, and the blue laser light is supplied 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 the intensity thereof is modulated according to the modulation signal, that is, image data, and the laser light is reflected by the reflection mirrors 88R and 88G. , 88B and enters the polygon mirror 89. The polygon mirror 89 is rotated at a predetermined speed, and the laser light is
The polygon mirror 89 scans the surface of the color paper 90 conveyed in the sub-scanning direction through the fθ lens 93 to perform main scanning. Therefore, color paper 7
0 is two-dimensionally exposed by R, G, and B laser beams. To synchronize with the rotation of the polygon mirror 89,
Since the color paper 90 is transported in the sub-scanning direction, the color paper 90 corresponds to the color image recorded on the film F or the color print P.
It will be exposed by 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 is driven by the cutter 98 based on the reference holes formed in the side edges of the color paper 90, or one film F or one sheet. Is cut to a length corresponding to the color image recorded on the color print P of the
And is collected for each customer or for each customer corresponding to one film F. The operator uses the keyboard 6
When a command signal for synthesizing data is input to the image data obtained by reading the color image using 9, the CPU 60 outputs the data synthesizing signal to the data synthesizing means 75, and the data synthesizing is performed. The means 75 reads, from the composite data memory 76, image data such as a figure or a character to be composited with the image data obtained by reading the color image, and combines the data, while when the instruction signal is not input to the keyboard 69. , Do no processing. Thereafter, the image data is sent from the data synthesizing means 75 to the image output device 8
Is output to

When image data is input to the image output device 8 from the data synthesizing means 75 of the image processing device 5, the 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 is not synchronized with the operation of the image output device 8, the image reading device 1 reads the image and the image processing device 5 receives the image processing. The image data stored in the image output device 8
It is input to the image output device 8 regardless of the processing of. 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 stored as
The images are sequentially stored in the frame memory so that the images are read at high speed by the image reading device 1 and the image data is sent to the image output device 8. It guarantees that the color image can be reproduced on the color paper 90.
Each unit in the image output device 8 is configured to be operated in synchronization with each other by the CPU 60, and the color paper 90 is pulled out from the magazine 91 and conveyed in the sub-scanning direction along a predetermined conveyance path. Then, in synchronization with this, 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 to generate a modulated signal. And three red semiconductor laser light sources 84a,
The red laser light is emitted from 84b and 84c, the laser light emitted from the semiconductor laser light source 84b is converted into a green laser light by the wavelength converting means 85, and the laser light emitted from the semiconductor laser light source 84c has a wavelength of After being converted into blue laser light by the conversion means 86, the red laser light is sent to the modulator 87R and the green laser light is sent to the optical modulator 87.
The blue laser light enters G and enters the optical modulator 87B. Modulation signals are input to the optical modulators 87R, 87G, and 87B from the modulator driving means 83, and the intensity thereof is modulated according to the modulation signal, that is, image data, and the laser light is reflected by the reflection mirrors 88R and 87R.
It is reflected by G and 87B and enters the polygon mirror 89. The polygon mirror 89 is rotated at a predetermined speed, and the laser light is mainly scanned by the polygon mirror 89 on the surface of the color paper 90 conveyed in the sub scanning direction via the fθ lens 93. 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 so as to be synchronized 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. It will be exposed by light.

In this way, the color paper 90 exposed by the laser beam is sent to the development processing section 94, subjected to predetermined development processing and water washing processing, and based on the image data image-processed by the image processing device 5, A color image is reproduced on the color paper 90. The color paper 90 that has been subjected to the development processing and the water washing processing by the development processing unit 94 is sent to the drying unit 95, and after being dried, based on the reference holes punched in the side edges of the color paper 90, the color paper 90 The cutter 96, which is driven in synchronism with the conveyance of 90, cuts into a length corresponding to a color image recorded on one film F or one color print P, and is sent to the sorter 97 to The number of sheets corresponding to the film F or the number of customers is accumulated. According to this embodiment, between the color density gradation conversion means 100 and the saturation conversion means 101, between the saturation conversion means 101 and the low-pass filter 102, between the low-pass filter 102 and the digital magnification conversion means 103, the digital magnification conversion is performed. Means 103
And the frequency processing means 104 and the frequency processing means 10
4 is followed by buffer memories 105, 106, respectively.
Since 107, 108 and 109 are provided, the design of the color density gradation converting means 100, the saturation converting means 101, the digital magnification converting means 103 or the frequency processing means 104 is changed to upgrade the version of the image processing apparatus. It can be easily achieved. Further, in the present embodiment, the color density gradation converting means 100, the saturation converting means 101,
Since the low-pass filter 102, the digital magnification conversion means 103, and the frequency processing means 104 are modularized and can be replaced in module units, it is extremely easy to replace the module whose design has been changed. Moreover, it is possible to upgrade the version of the image processing apparatus.

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. It goes without saying that it is a thing. For example, in the above-mentioned embodiment, the light amount adjusting unit 12 and the light amount adjusting unit 34 are controlled by the reading control means 21 and 41 based on the image data obtained by the pre-reading.
Control to adjust the amount of light in the main reading,
Although the storage time of the CCD area sensor 15 and the CCD line sensor 35 in the main reading is controlled, the light amount adjusting unit 12 and the light amount adjusting unit 34 are controlled to
Even if only the amount of light in the main reading is adjusted, or the CCD area sensor 15 and C in the main reading are adjusted.
You may make it control only the accumulation | storage time of the CD line sensor 35. In addition to these, or
Instead of these, CCD area sensor 15 and CCD
The clock speed of the line sensor 35 may be controlled. Further, in the above embodiment, the first image processing means 61 is provided with the color density gradation converting means 100, the saturation converting means 101, the digital magnification converting means 103 and the frequency processing means 104 as the image processing means. However, the first image processing means 61 may have image processing means for performing image processing other than these in addition to these image processing means.

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-described embodiment, the color image is reproduced on the color paper 90, but the color image may be reproduced only on the CRT 68 but not on the color paper 90. Further, in the present invention, the means does not necessarily mean a physical means, but also includes a 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.

[0031]

According to the present invention, image data obtained by photoelectrically reading a color image and converting it into a digital signal is stored in the image data storage means, and the image data stored in the image data storage means is stored. It is possible to provide an image processing apparatus for a color image reproduction system that performs image processing on a color image and reproduces a color image, and that can be easily upgraded.

[Brief description of the 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.

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 reader for a color image reproduction system that produces image data to be processed by an image processor according to a preferred embodiment of the present invention.

FIG. 4 is a block diagram of an image processing apparatus 5 according to a preferred embodiment of the present invention.

FIG. 5 is a block diagram of an image processing apparatus 5 according to a preferred 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. 8 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.

[Explanation of symbols]

F Film P Color print 1 Image reading device 5 Image processing device 8 Image output device 10 Transmission type image reading device 11 Light source 12 Light intensity adjustment unit 13 Color separation unit 14 Diffusion unit 15 CCD area sensor 16 Lens 17 Amplifier 18 A / D converter 19 CCD correction means 20 Log converter 21 Interface 22 Carrier 23 Motor 24 Driving roller 25 Screen detection sensor 26 CPU 30 Reflective image reading device 31 Light source 32 Mirror 33 Color balance filter 34 Light intensity adjustment unit 35 CCD area sensor 36 Lens 37 Amplifier 38 A / D converter 39 CCD correction means 40 Log converter 41 Interface 46 CPU 48 Interface 49 Addition / averaging calculation means 50a First line buffer 50b Second line buffer 51 First frame memory unit 51R R data memory 51G G data memory 51B B data memory 52 Second frame memory unit 52R R data memory 52G G data memory 52B B data memory 53 Third frame memory unit 53RR data memory 53G G data memory 53B B data memory 55 selector 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 69 keyboard 70 communication port 75 data synthesizing means 76 synthetic data memory 76RR data memory 76G G data memory 76B B data memory 77 interface 78 interface 79 CPU 80 image Data memory 81 D / A converter 82 Laser light irradiating means 83 Modulator driving means 84a, 84b, 84c Semiconductor laser light source 85, 86 Wavelength converting means 87R, 87G, 87B Light modulator 88R, 88G, 88B Reflecting mirror 89 Polygon mirror 90 color paper 91 magazine 92 perforating means 93 fθ lens 94 color developing tank 95 bleach-fixing tank 96 water washing tank 97 drying section 98 cutter 99 sorter 100 color density gradation converting means 102 chroma saturation converting means 102 low-pass filter 103 digital magnification converting means 104 Frequency processing means 105, 106, 107, 108, 109 Buffer memory

Claims (2)

[Claims] 1. A color image is photoelectrically read, and image data obtained by converting the color image into a digital signal 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, each image processing means for executing image processing is modularized, and a buffer memory is provided between adjacent modules. Processing equipment. 2. The image processing means includes a color density gradation conversion means for converting a color tone signal level, a density signal level and a gradation signal level of image data, and a pixel of image data for converting a saturation signal level of the image data. The image processing apparatus according to claim 1, further comprising digital magnification conversion means for converting the number of data and frequency processing means for performing frequency processing such as edge enhancement on the image data.