JPH0144072B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an offline method for producing color films and color separation plates of high-quality images from a continuous video signal such as a television signal stored on a videotape or the like from a screen selected on one monitor television. This invention relates to a prepress system for video images that are created manually.

Due to the recent remarkable development and spread of video technology and changes in publishing trends due to the diversification of printed materials, it is now possible to use desired screens from continuous video information stored on video tapes, etc. for photographs, printed manuscripts, etc. If so, you will get many benefits. This is because compared to the traditional method in which photographers use still cameras to shoot film, there are improvements in speed, shot accuracy, shutter sound, flash light, and
This is because it is free from constraints such as low brightness, and at the same time, various needs can be expected to develop. for example,
Directly create photographs and printing plates from video information recorded on video tapes, etc., or use composite video signals from television or R (red), G (green), B (blue) from movie film using a telecine device. create a signal,
From now on, it will be possible to directly create printing plates, making it possible to publish at a lower cost and more quickly than with conventional methods.

However, when using conventional video information recorded on a videotape as a printing document, the videotape is first set in a playback device, continuous video is displayed on a CRT (cathode ray tube) using slow or stop playback, and then the screen is displayed. After a film original is created by photographing a desired image with a still camera while observing the image, color separation plates are created from the film original using a plate making device such as a color scanner. Therefore, the quality of the printed document depends on the resolution of the television image. However, color television broadcasting in Japan uses the NTSC system, and one screen (one frame) is formed by 525 scanning lines, regardless of the size of the television image.
Therefore, the image quality of one frame is extremely poor in terms of resolution etc. compared to general color film. In addition, in the method of selecting a desired screen from a continuous video image and shooting it with a still camera, in order to improve the quality of the image, the color temperature of the CRT, the coloring characteristics and brightness range of the RGB phosphor, and the color temperature of the color film are used. Due to the inconsistency between the coloring material characteristics and the density range, a special color temperature conversion filter was inserted in the front of the camera, and
There is a problem in that it is necessary to adjust the hue and contrast of the color monitor. Moreover, it is not always possible to obtain a satisfactory color tone only by making these corrections.

Furthermore, the number of television scanning lines has a large effect on the quality of resolution, and when the image projected on a CRT is accurately focused and photographed with a camera, these scanning lines are markedly recorded as horizontal stripes on the film. Put it away. The scanning lines recorded on this film cause moire fringes during the plate-making process, so
A photographic technique that eliminates scanning lines is required. For example, to obtain a desired image from a continuous image with little movement, the influence of scanning lines is completely erased by exposing several frames onto a single film while playing back or slowing down. Since the image cannot be erased completely, I try to shift the focus of the photo slightly. However, this method has the disadvantage that it is difficult to accurately photograph a desired screen and that the screen is blurred. Therefore, in order to obtain a desired image from continuous video with large movements, it is necessary to perform stop playback. Normally, with a 3/4-inch VTR, only one field of video signal is played during stop playback, and the vertical resolution of the image projected on the CRT is halved, making scanning line erasure a more difficult shooting technique than in the former case. is required. In such cases, the resolution of general color film is 50
Since the image size is around 1mm/mm, a shooting method is used that takes advantage of the limits of color film's resolution.
That is, the scanning lines are erased by photographing the desired image on the CRT in a reduced size until the scanning lines are no longer distinguishable. Therefore, since video images with inherently poor image quality are shot on extremely small size color film, the final print size is limited to A6 to A7 size, and larger sizes have no commercial value. . Another disadvantage is that the workability becomes significantly worse when a small-sized color image is laid out in a pail or enlarged.

As a television image plate making apparatus for solving the above-mentioned problems, for example, a video signal corresponding to one desired frame is read out from a video tape recorder that records a television video signal,
There is a device that produces a printing plate by converting this video signal into three primary color signals, converting the three primary color signals into a printing image signal, and supplying this printing image signal to a plate-making scanner. means for sequentially reading signals from the scanner in synchronization with the scanning speed of the scanner; means for converting the NTSC signal into an RGB signal; and means for converting the RGB signal into Y (yellow), M (magenta),
The means for converting into C (cyan) and BK (black) signals and supplying them to the scanner are all configured online. Although this device has solved the above-mentioned problems quite effectively, since the device configuration is all online, the video tape recorder has to repeat slow playback, stop playback, etc. in order to obtain the desired screen. The disadvantage is that the lifespan is shortened, and the friction caused by the playback head of the video tape recorder can damage the video tapes of loyal customers. Moreover, since this apparatus is entirely online, it is not possible to independently perform videotape editing work and signal conversion processing work, which poses problems in terms of workability and efficiency. Furthermore, there is no mention of the necessity of a time base corrector that electrically corrects image jitter and dropout, a noise reducer that removes noise other than the image signal, and a detail collector that enhances the contours of the image. There are also problems with this.

Accordingly, it is an object of the present invention to provide a video image prepress system that solves the above-mentioned inconveniences and problems.

This invention will be explained below.

This invention covers (1) video tapes, video discs, slides, captions, television radio waves and
Inputs a video signal from a TV camera, etc. through an input switching unit, records the video signal together with a time code on a master videotape without degrading the video signal, and corresponds to the selection screen when a desired screen is selected from the master videotape. an input editing section that records the time code in the time code memory or external memory;
(2) The input editing section is configured offline and inputs the time code from the time code memory or inputs the time code from the external memory via the playback device, stores it in the frame search circuit, and plays the master videotape. an automatic selection playback section that sequentially reads timecodes with a timecode reader and automatically extracts a selection screen in which the timecode output from the timecode reader matches the timecode stored in the frame search circuit; An image quality improvement section consisting of a digital circuit that corrects the time lag between each scanning signal of the image signal from the automatic selection playback section, removes noise, and performs edge enhancement processing, as well as brightness and color signals suitable for high-quality images. Due to the separation of
In addition to converting to RGB signals, it can also be used with other TV cameras, captain systems (Character and Pattern
Telephone Access Information Network
It is configured to be able to input RGB signals from systems), etc., and these RGB signals can be adjusted simultaneously or independently, and color and gradation correction processing (contrast correction, gradation translation, light area a correction section that displays the screen of the input editing section, and a display section that displays the RGB signal before correction and the RGB signal after correction on the monitor via a screen synthesizer. , and (3) the image signal conversion processing section, which includes an image signal conversion processing section having a storage section that digitizes and stores the corrected RGB signals, and (3) the image signal conversion processing section is configured offline. The RGB signals stored in a storage unit such as a floppy disk are read out sequentially as scanning line information for odd fields and scanning line information for even fields, and the signals are read out sequentially as scan line information for odd fields and scan line information for even fields, and then outputs cuboid convolution, bilinear, and nearest to each other depending on the screen. Switch to Neighbor to perform scanning line interpolation, output to a color film creation device when creating a color film, output to a scanner when creating print separations, and output to a scanner when creating a layout for a single screen or multiple screens. The layout system is equipped with an output device for outputting to the layout system or outputting to the layout system via a scanner.

FIG. 1 is a block diagram showing an embodiment of the input editing section and the image signal conversion processing section of the present invention. A disk (or floppy disk) 12, film (or slide, caption) 13, and television radio waves 14 can be considered. The videotape 11 and video disk 12 can contain not only one recorded screen but also a composite of several screens, and each of these input media 11 to 14 is a VTR (video tape recorder) 21. ,
The video signal is reproduced into a video signal by a VDR (video disc recorder) 22, a telecine device 23, and a TV receiver 24, and transmitted to the editing department. Also, video information captured by the TV camera 25 (for example, MTSC method)
may be directly transmitted to the editorial department.

Among these input media, the one provided by the customer is generally a 3/4 inch wide U-matic video cassette tape, and after setting the provided original cassette tape into a 3/4 inch VTR,
It is also possible to select the screen to be used by repeatedly operating the slow playback and stop playback knobs on the automatic electronic editing unit while observing the monitor screen.
However, it is a very difficult operation to accurately select the screen desired by the customer from among the actual continuous images. In particular, repeating slow playback, stop playback, etc. of a VTR in order to capture a single shot like a shot will shorten the lifespan of the VTR.
Furthermore, friction caused by the VTR's playback head can damage the customer's valuable video tapes.

In order to solve this problem, in this invention, as shown in FIG.
4 inch wide videotape 11 for 3/4 inch
After setting on the VTR 21, the input switching section 30 of the editorial department
The data is then re-recorded via the time code writing section 31 onto a 1-inch wide videotape 33 that has been set in a 1-inch VTR 32 in advance. In addition to a video track for recording video information and an audio track for storing audio information, the 1-inch wide video tape 33 has a time code track for recording a time code. By re-recording on the 1-inch video tape 33, the time code generated from the time code generator 34 is transferred to the 1-inch video tape 33.
The video information is continuously recorded on the top corresponding to one frame of video information. This time code can be used to specify the screen that the customer wants to use for printing, so the desired screen can be extracted accurately and in a short time.
Furthermore, during re-recording, the automatic editing unit 40 controls the playback of the 3/4-inch VTR 21 and 1-inch VTR 32, and the re-recording status is monitored by the screen synthesizer 7.
0 and can be observed on the CRT monitor 71. Therefore, if there is no need to re-record the entire 3/4 inch wide videotape 11 provided by the customer,
It is also possible to re-record only the necessary portions while viewing the image on the CRT monitor 71. In addition, when inputting a video signal from another input medium, the reproduced video signal is switched by the input switching section 30 and recorded on the 1-inch videotape 33 in the same manner as in the case of the 3/4-inch videotape 11. .

The 1-inch wide videotape 33 re-recorded as described above is once rewound by the 1-inch VTR 32 and then played back. The playback is performed by operating the slow playback and stop playback knobs of the automatic editing unit 40, and the video information can be observed on the CRT monitor 71 via the screen synthesizer 70. this
The CRT monitor 71 has a built-in Y (luminance signal)/C (chroma signal) separation decoder and uses a high-resolution cathode ray tube, so it can obtain better image quality than a normal monitor. There is. Therefore, the re-recorded image is displayed on the CRT monitor 7.
1, select a desired screen at any time based on the customer's instructions for printing screens or in the customer's presence, and at the same time press the frame designation switch for screen selection instructions on the console 50. The time code of the selection screen read by the time code reader 36 is stored in the time code memory 37.
will be registered. Reading of such time codes is controlled by a microcomputer. For example, even if the specified frames are randomly placed on the master tape, the time code memory 37 stores the times of the corresponding frames in the selected order of frame numbers. Code is written. Also,
If there are several video tapes or other recording media to be registered and you are registering them all at once, or if you do not want to immediately create print separations from the color film 13, the registered time code is temporarily stored in the external memory 3.
Register on 8. In addition, as the external memory 38,
Cassette tape, floppy disk, paper tape, etc. can be used. In addition, the input switching unit 30
If you use a video switcher as a video switcher, you can create a composite image of any input media.

Videotape 3 whose registration has been completed in this way
When creating a color film or printed separation plate from 3.3, first the registered screen is extracted from the videotape 33. If the external memory 38 is not used for this extraction, by pressing the frame extraction switch on the console 50 after registration is completed, the time codes recorded in the time code memory 37 are read out in the order in which they are recorded, and the frame search is performed. The signal is sent to circuit 51. In addition, when using an external memory 38 (for example, a paper tape), load the external memory 38 into a playback device (for example, a paper tape reader),
In the same manner as described above, by pressing the frame extraction switch on the console 50, the recorded time codes are sequentially read out and sent to the frame search circuit 51. Then, the 1-inch VTR 32 starts playback, and the time code recorded in advance corresponding to each frame is sequentially transferred to the time code reader 3.
6 and input to the frame search circuit 51, and the time code memory 37 or external memory 38.
compared to the timecode from If the two match, the frame search circuit 51 outputs a freeze command FL for the corresponding image signal to the noise reducer 62 in the image quality improvement unit 60, and the desired frame is stored in the frame memory built in the noise reducer 62. be done. At the same time, a re-correction stop signal (not shown) is output from the frame search circuit 51 to the 1-inch VTR 32, and this VTR
32 is stopped. In addition, time code reader 3
Until the information from time code memory 37 (or external memory 38) matches the information from time code memory 37 (or external memory 38), the reproduced image signal RVD of video tape 33 is being transmitted via image quality improvement section 60. On the other hand, if you want to extract the next frame after completing the gradation correction or storing to the floppy disk, which will be described later, press the frame extraction switch on the console 50 again.
The inch VTR 32 is rotated and a frame search for the next frame number is performed in the same manner as described above. If the next frame has more time codes than the previous frame, the VTR 32 fast-forwards forward; if there are fewer, the VTR 32 fast-rewinds in the opposite direction. The start, stop, fast forward, and fast rewind operations are controlled by a microcomputer in accordance with information in the time code memory 37 or external memory 38. Furthermore, the above-mentioned 1-inch VTR 32 is intended for re-recording the video tape 33 provided by the customer without degrading the image quality as much as possible.
If you need to reduce costs and are willing to accept a slight reduction in image quality when re-recording, use 3/4-inch
You may also choose a VCR. However, in this case, 3/4
Inch-wide video cassette tapes do not have time code tracks, so an audio track is used instead.

This image quality improvement unit 60 is a time base collector 6
1, a noise reducer 62, and a detail collector 63. The time base corrector 61 is for correcting the time difference between each scanning line of the video signal, which is usually called jitter.
This is because if the data is stored in the frame memory with temporal jitter, there will be differences in the sample start point and the number of sample pixels for each scanning line. The noise reducer 62 suppresses various noises,
Original 3/4 inch wide videotape provided by customer to improve image quality11
If the quality of the recorded image has deteriorated due to noise, etc., or if noise has occurred in the video editing section or the signal conversion system during playback of the re-recorded videotape 33, the image quality has deteriorated. It is something that improves. The detail corrector 63 performs contour enhancement processing to emphasize the points of change in the horizontal and vertical directions of the image and to make the image appear sharper.

Image signal RIV whose image quality has been improved by the image quality improvement unit 60
is sent to the RGB decoder 52 and converted from the NTSC signal into RGB signals of R (red), G (green), and B (blue). Since this RGB decoder 52 separates the luminance signal Y and chroma signal C using a comb filter, it is possible to obtain an image signal with excellent resolution and color tone, and the separated RGB signals are sent to the switch 53 and frame It is input to the gradation correction unit 72 via the memory 84, and is also input to the screen synthesizer 70.
After that, it can be observed on the screen 71A of the CRT monitor 71. Also, in Switchia 53
RGB signals from TV cameras (RGB system), captain systems (RGB signals), microcomputers, office computers, etc. are now being input, and these RGB signals can be taken in by switching the switcher 53. can. In other words, RGB captured via the switcher 53
The signal is digitized by an AD converter 83, stored in a frame memory 84, and then digitized by a DA converter 85.
The signal is converted into analog data and sent to the screen synthesizer 70 and gradation correction unit 72. Further, a corrector and display 55 controlled by an operation console 50 are connected to the gradation correction unit 72, and input from a switcher 53 is connected to the tone correction unit 72.
For each RGB signal, it is possible to manually adjust the contrast, shift the gradation in parallel, and adjust the gradation of the light or shadow areas, and the correction results are displayed on the CRT monitor 71 via the screen synthesizer 70 at any time. Ru. Therefore, the corrector and indicator 55
By inserting a curl signal into the still image, the video level at any point of the still image displayed on the CRT monitor 71 can be adjusted using a comparison value with respect to the video white signal reference value of 0.7V. And numerical values can be displayed on the display section of the display 55. In addition, the conditions for applying gradation correction to each of the input RGB signals and the setting position information of the gradation correction knob of the corrector and display 55 are stored in the external memory (via the external memory recording/reproducing device). For example, it is possible to record on magnetic tape, paper tape) 57.

In this way, the R, G, and B still image signals that have undergone the necessary corrections by the corrector and display device 55 are displayed on the CRT monitor 71 via the screen synthesizer 70, and when the corrections are completed, the corrections are made on the console 50. By pressing the completion instruction switch, it is converted into a digital signal of 765 pixels per scanning line via the AD converter 54 in real time, and is sequentially stored in the frame memory 80 corresponding to each R, G, B signal, and displayed on one screen. Recording of the RGB signal for is completed.
By the way, the screen synthesizer 70 is composed of a changeover switch 72 for changing over the input signal, and a switcher 73 for controlling the output to the CRT monitor 71.
The output of the input switching section 30 passes through the switching switch 72.
It is supplied to the RGB decoder 74, and its output is
It is now displayed on the monitor 71.

In addition, the display method on the CRT monitor 71 is as follows.
First, the entire screen may be displayed as an image before gradation correction, and then by switching the screen synthesizer 70, the image line after gradation correction may be displayed on the entire screen.
Screen switching is optional. In addition, as shown in the figure, one screen is divided into two, and one is the image area 7 before correction.
1A and the other as the corrected image area 71B, the screen dividing line 71C can be set to any position using a knob etc. provided on the screen synthesizer 70, and the dividing line 71C If 71C is set at the left and right screen edges, it is the same as switching the screen.

The RGB corrected still image information written in the frame memory 80 in this way is sent to the operation console 50.
As a result of the operation, the data is sequentially sent to the floppy disk driver (FDD) 81 via the selector 86 for each RGB color, and written to the floppy disk 82 here. For this writing, it is necessary to control reading of the frame memory 80 in accordance with the writing speed of the floppy disk 82. Further, the frame memory 80 can be replaced with a line memory, but in this case, the time required for writing becomes even longer.

From the floppy disk 82 storing these RGB image information, a color film is created by a color film creation device 120 having an offline configuration as shown in FIG. 2, and a printed separation plate is created by a color scanner 221. create. This color scanner is connected to a layout scanner 222 as necessary to create a layout image. That is, when trying to obtain a color film or a layout image, the floppy disk 82 is set in the floppy disk driver 101, and the read image information is sent to the multiplexer 10.
2, it is written into the frame memory 104, and read out and sent to the scanning line interpolation section 103 in accordance with the scanning speed of the color film production device 120 or color scanner 221. A scanning line interpolation unit 103 performs interpolation between scanning lines according to a predetermined calculation formula. When a color film is to be obtained, interpolated high-density image information is sent to a color film production device 120 via an RGB selector 105 and an interface 110 to obtain a color film. In addition,
A control section is provided within the color film production device 120 and is adapted to control the frame memory 104, selector 105, and interface 110. In the signal transferred to the scanning line interpolation unit 103, the scanning lines of the odd field and even field are read out alternately in ascending order of number, and the scanning method is switched from the interlaced method to the sequential method. This prevents pairing, which is a drawback of the interlaced method, and prevents deterioration in image quality. The number of scanning line signals transferred to the scanning line interpolation unit 103 is 484 signals, which is the number of scanning lines of television (NTSC system), which is 525 minus the number of scanning lines corresponding to the blanking period. The scanning line interpolation unit 103 performs interpolation calculations to increase the number of scanning lines from 484 to 1924, approximately four times as many, so that some of the scanning lines overlap during exposure so that they cannot be recognized as separate lines. Make it. The resolution can also be increased by the interpolation effect.

The interpolation calculation in this invention is configured so that the nearest neighbor method, bilinear method, and Cubic convolution method can be selected by switching a switch. The nearest neighbor method uses the data of adjacent pixels as pixel data at the interpolation point, and is suitable for binarized images, while the bilinear method uses interpolation assuming that the data between scanning lines changes linearly. It determines the pixel data of a point,
Suitable for images with many halftones, the Cubic convolution method determines the pixel data of the interpolation point from the correlation of the data of the 16 pixels surrounding the interpolation point, and is suitable for any image. . This interpolation calculation requires 16 multiplications and additions per interpolation surface pixel for approximately 1.5 million pixels per screen, so the calculation speed of computer software processing is slow and time consuming. It takes too much. Therefore, in the present invention, the scanning line interpolation section 103 is configured with a logic circuit, and data is outputted to the output section of the next stage in real time, thereby enabling extremely high-speed film production.

On the other hand, when obtaining a color separation version for a layout image, the interfaces 110 and 210 are switched,
The image signal from the scanning line interpolation unit 103 is sent to the layout scanner system 2 via the interface 210.
20, and a layout system 222 obtains color separation plates for the layout image. The details of the layout output system 220 are shown in FIG.
Reference numeral 21 picks up information on color manuscripts, text manuscripts, etc. by a scanning method, and the picked-up analog image information is converted into digital information by an AD converter and is temporarily stored in an external memory 225 via a computer 223. external memory 22
As for No. 5, one or more magnetic disk devices with a large storage capacity (approximately 300 megabytes) are sufficient. Further, the image processing and editing device 224 is equipped with a keyboard, a digitizer, and a monitor display, and these devices are used to input page layout information of the block mount. This page layout information is also temporarily stored in the external memory 225 via the computer 223. In addition, when performing page make-up, use the image processing and editing device 2.
Commands are entered from the 24 keyboard to recall page layout information on the display. Furthermore, a command is input from the keyboard to retrieve image information from the magnetic disk device of the external memory 225 and move it to a designated trimming position. Next, when a mask-related command is input, image information other than the trimming size is erased from the screen, leaving only the necessary image information. If you are dissatisfied with the tone, you can also retouch it with instructions regarding corrections. In addition to the above-mentioned image movement, masking, and correction, the commands and functions necessary for page make-up include cropping, image overlapping processing, and flat screen/shading. When the operator completes a page make-up process, the image information is stored in a predetermined magnetic disk device via the computer 223. The information after this page make-up processing is converted into a film from the output device 226 when necessary, and is sent to a laid-out color separation plate 227 of Y (yellow), M (magenta), C (cyan), and BK (black).
obtained as.

Note that although Fig. 2 shows an example of a system in which a color film and a layout image are not obtained at the same time, if a color film and a layout image are to be obtained at the same time, the color The film production system and the layout output system shown in FIG. 5 may be provided separately. The operation of each system is exactly the same as in the case of FIG.

As explained in detail above, according to the present invention, the image quality is dramatically improved compared to the conventional method of displaying continuous video images on a color cathode ray tube, selecting the desired screen, and photographing it with a still camera. It is possible to obtain images suitable for printing. This includes RGB signal gradation correction/scanning method conversion, 2
In addition to performing various image quality improvement processes such as increasing the number of scanning lines through dimensional interpolation to eliminate scanning lines and increasing resolution, we have also implemented various image quality improvement processes, such as increasing the number of scanning lines through dimensional interpolation processing, and improving resolution. This is due to the effects of correction, suppression of noise signals included in the video signal by the noise reducer, and enhancement of image contours by the detail collector. In addition, compared to the method of taking pictures with a still camera, it is possible to select and extract screens extremely accurately. Furthermore, since the signal conversion processing section and the interpolation processing and output section are configured offline,
Each task can be performed independently and can be performed at any time, allowing efficient operation. Furthermore, it has the advantage that color film output and color scanner output can be dedicated, and when a layout scanner system is introduced in the output section, it is possible to combine photo processing, mask creation, etc., which are the main tasks in the plate-making process. It is expected that manual departments with many labor-intensive elements such as preparation and synthesis will be able to be automatically processed. In addition, this system has only one display monitor, which can be switched and monitored individually or simultaneously using a screen synthesizer, which solves the color tone problem and is also economical.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the configuration of the input section, editing section, and image signal conversion processing section of the present invention, FIG. 2 is a block diagram showing an example of the output section of the invention, and FIG. 3 shows a part of it. The detailed block diagrams shown in FIGS. 4 and 5 are block diagrams showing other examples of the output section of the present invention, respectively. 11...Video tape, 12...Video disk (floppy disk), 13...Film (slide, caption), 14...Television radio waves, 21, 32...VTR, 22...VDR, 23
...Telecine equipment, 24...TV receiver, 25...
...TV camera, 30...Input switching unit, 31...Time code writing unit, 40...Auto editing unit, 50...Operation console, 52...RGB decoder,
53...Switcher, 60...Image quality improvement department, 70
... Screen synthesizer, 80, 84, 104 ... Frame memory, 82 ... Floppy disk, 81,
101...Floppy disk driver, 102
...Multiplexer, 103...Scanning line interpolation unit,
120... Color film creation device, 220...
Layout scanner system, 221...Color scanner, 222...Layout system.

Claims (1)

[Claims] 1 (a) A video signal from a videotape, video disc, slide, subtitle, television radio wave, TV camera, etc. is input through an input switching section, and a time code is generated without deteriorating the video signal. (b) an input editing section that records the time code on a master videotape and stores the time code corresponding to the selected screen when a desired screen is selected from the master videotape in a time code memory or an external memory; (b) the input editing section; The department is configured offline,
A time code is input from the time code memory or from the external memory via a playback device and stored in a frame search circuit, and while playing the master videotape, the time code is read by a time code reader. an automatic selection playback unit that reads sequentially and automatically extracts selection screens in which the time code output from the time code reader matches the time code stored in the frame search circuit; and an image from the automatic selection playback unit. The image quality improvement unit consists of a digital circuit that performs time shift correction, noise removal, and edge enhancement processing between each scanning line signal, and the separation of luminance and color signals suitable for high-quality images to convert RGB signals into RGB signals. Along with converting other TV
The configuration allows RGB signals from cameras, captain systems, etc. to be input, and these RGB signals can be adjusted simultaneously or independently, and color and gradation correction processing (contrast correction, gradation translation, light a correction section that adjusts the gradation, etc. of areas or shadow areas;
an image signal conversion processing section comprising: a display section that displays the RGB signal and the corrected RGB signal on a monitor via a screen synthesizer; and a storage section that digitizes and stores the corrected RGB signal; , (c) The image signal conversion processing section is configured offline, and sequentially reads out the RGB signals stored in the storage section of the image signal conversion processing section as odd field scanning line information and even field scanning line information. , performs scanning line interpolation by switching to cubic convolution, bilinear, or nearest neighbor depending on the screen, outputs to a color film production device when creating a color film, and outputs to a scanner when creating printed separation plates. 1. A video image plate-making system comprising: an output device that outputs the output to the scanner and outputs the output to the scanner or outputs the output to the layout system via the scanner when performing a layout for a single or multiple screens.