JPS5897049A - Editing and extracting device for video image - Google Patents

Abstract

PURPOSE:To obtain an editing and extracting device for video images which is automated as far as possible by recording video signals together with time codes in a master video tape then retrieving the required frames. CONSTITUTION:For example, a video cassette tape of 3/4 inch width presented from a customer is rerecorded in a 1-inch wide video tape 10 which is set beforehand in a video tape recorder 9. This tape 10 has a time code track for recording of time codes other than video tracks and sound tracks. Time codes are recorded continuously therein with a time code writing part. If such time codes are used, the image planes requested by the customer can be assigned, and the image planes are extracted accurately in a short time. Thus, the editing and extracting device for video images which is automated as far as possible is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically selecting an arbitrary frame from one continuous video signal in a video image plate making device.

Due to the remarkable development and spread of video technology in recent years and changes in publishing trends due to the diversification of printed materials, it is now possible to select the desired double-sided image from continuous video information recorded on video tapes, etc., and create photos and printed materials from this screen. and devices have been created to be used for this purpose. However, with these methods, the time code is written directly onto the customer's videotape and the desired frame is selected by repeating slow playback, fast forward playback, early spring return, etc. on the videotape recorder, which wastes valuable customer time. This will result in damage to the videotape. Also, to specify a desired frame, the time hood of the specified screen is recorded in writing, this record is written into memory, and the information in this memory is compared with the original tape. Furthermore, since the VTR is not stopped after the first frame is frozen in the frame memory, the VTR rotates too much during printing of the first frame, and in order to access the second desired frame, the VTR must be restarted. The need to rewind the videotape is extremely inconvenient and inefficient.

The present invention compensates for these drawbacks and provides an editing/extraction bag for use in a video image plate-making device that is as automated as possible. After recording, when selecting a desired 7L/- frame from the master tape and randomly specifying any frame on the master tape by pressing a button, the time code of the frame selected in the specified order is stored in the time code memory. The master tape is automatically started, stopped, rewinded, fast forwarded, and early reversed in the order of frame numbers written in the time code memory or in the order of the time code. The present invention is characterized in that it includes an extracting section that can search for frames and start and stop the master tape in accordance with subsequent operations.

Next, the present invention will be explained in detail using the drawings. Figure 1 shows
FIG. 2 is a block diagram showing the configuration of the present device.

The input medium may be anything as long as it generates a video signal, such as a video tape 1-11, a video disk or a floppy disk 1-2, a film or slide or a telop 1-3, and a television radio wave 1-4.

Video tapes, floppy disks, video discs are
It is possible to include not only one recorded screen but also a composite of several screens. These input media are VTA B-1, VDR2-2, f-reg* equipment WE
-3. The video signal is reproduced by the TV receiver 2-4 and sent to the present device. Among these inputs, those provided by the customer are 3/4 inch wide u, -IIlat
iO video cassette tapes are common, and after setting the provided original cassette tape into a 3/4-inch video tape recorder, operate the slow playback and stop playback knobs on the automatic electronic editing unit while observing the monitor field. You can also select the screen you want to use by repeating . 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. on a video tape recorder in order to capture a photo opportunity shortens the life of the video tape recorder, and furthermore, the friction caused by the video tape recorder's playback head can damage valuable customers. It may also damage the video tape. In order to solve the above-mentioned problems, in the present invention, as shown in FIG. After setting, the data is re-recorded on a 1-inch wide videotape 10 previously set in the 1-inch video tape recorder 9 via the input switching section J1 and the time code writing section j. In addition to a video track for recording video information and an audio track for recording audio information, a 1-inch wide video tape has a time food track for recording time food.

By re-recording on the 1-inch wide videotape 10 via the time code writing section, the time code generator t
The time code generated from the 1-inch video tape is continuously recorded in correspondence with 1 frame of video information.

Using this time code, the customer can specify the l1iWI that he/she wants to use for printing, so that the 1IIWJ extraction can be performed accurately and in a short time.

Also, during re-recording, the automatic electronic editing unit (J) controls the playback stop of the 3/4-inch and 1-inch video tape recorders, and the re-recording status can be observed on the display monitor l via the video switcher. Therefore, if it is not necessary to re-record the entire 3/4-inch videotape provided by the customer, it is possible to re-record only the necessary portion by setting -a to i on the display monitor l. When inputting video signals from other input media,
The reproduced video signal is switched by the input device switching unit 3,
The 1-inch video tape 10 rerecorded as described above is then recorded on a 1-inch video tape in the same manner as the 3/4-inch video tape. It will be played after the Reproduction is performed by operating the slow reproduction and stop reproduction knobs of the automatic electronic editing unit, and the video information can be viewed on the display monitor 1 via the video switcher 7. This display monitor has a built-in YZC branch dehooder and uses a high-resolution cathode ray tube, so it can provide better image quality than ordinary monitors. Therefore, while replaying the re-recorded image on the display monitor l, the desired screen can be selected at any time based on the customer's instructions for printing the screen to be used or in the customer's presence, and at the same time, the screen selection instruction is given at the operation console/4. By pressing the frame designation switch, the time code of the selection screen read by the time food succession section ll is registered in the time code memory 13. This reading is controlled by a microcomputer, and as shown in FIG. 2, for example, even if the specified frames are randomly placed on the mask tape,
The time code of the corresponding frame is written in the time code memory 13 in the order of selection of the frame number. ・If there are several video tapes or other recording media to be registered, and the registration is performed at once, the color film is printed or separated immediately. When not creating a version, record the registered timecode in external memory. As the external memory, cassette tapes or 70 disks are generally used, but paper tapes may also be used.

When creating a color film or print separation from the videotape/θ for which registration has been completed, extract the registered screen from the videotape 10. This extraction is performed using the external memo IJ.
When /j is not used, by pressing the frame extraction switch on the console after registration is completed, the time codes recorded in the time code memory 13 are successively retrieved in the order in which they are recorded and sent to the frame search unit 12. When using external memory /3 - Load the external memory into the playback device /F and press the 7 frame extraction switch in the same way as above.
The recorded time codes are sequentially read out and sent to the frame search section. Meanwhile, the 1-inch VTR starts playback, and the time codes recorded in advance corresponding to each frame are sequentially read by the time code reading section // and input to the frame search section, and the time codes are input to the time hood memory /J or external It is compared with the time code from the memory, and when the two match, a 7-lead command for the corresponding image signal is sent from the frame search unit 12 to the noise reducer/I.
The desired frame is recorded in the frame memory built into the noise reducer/I. At the same time, the frame search section 12 outputs a reproduction stop number to the 1-inch VTR 9, causing the VTR 9 to stop.

Note that until the information from the time code reading unit // and the information from the time code memory 13 match, the video tape playback image signal is transmitted via the time base collector 17 and the noise reducer n. , can be observed on a display monitor.

When the IFIIIA correction described later and the creation of a color film or printed separation plate are completed and you want to extract the next frame, press the frame extraction switch on the console again and the VTR9 will rotate 1 inch, as explained earlier. A frame search for the next frame number is performed in the same manner as above. If the next frame has more time hoods than the previous frame, V'l'R fast-forwards forward, and if there are fewer, it performs early spring return in the opposite direction. For example, in Fig. 2, when detecting frame A/ and then detecting 7 frames of A-, fast forward to AJ by skipping AJ and Ada, and then when detecting A3, skip A frame and move to AJ. I won't go back until early spring. These start, stop, fast forward, and early spring return operations are performed under the control of the microcomputer according to the information in the time code memory /3 or external memory /j.

The purpose of the above-mentioned Finch VTR 10 is to re-record video tapes provided by customers without deteriorating the image quality as much as possible, but if it is necessary to reduce costs, it is possible to
A 3/4-inch video tape recorder may be selected if a slight reduction in image quality during recording is acceptable. however,
In this case, since the V4 inch wide video cassette tape does not have a time code track, an audio track is used instead. Further, in this embodiment, a 1-inch videotape was used for the re-cooking, but this can be changed to a video disc.

The time base corrector 17 corrects time deviations, that is, jitter. Particularly when the input medium is a videotape, the jitter is large, and unless a time base corrector is also used, the image quality will be seriously degraded. The noise reducer /l is for removing noise, and in this embodiment, a digital type is used to remove noise extremely effectively. The detail corrector 19 is used to sharpen the outline and make the screen clear. The time pace collector n explained above
Since the image quality improvement processing unit constituted by the 1 reduplicator/I and the detail collector 19 improves the image quality of the input signal, extremely high quality color films or printed separations can be obtained.

The video signal with improved image quality is converted from an NTSO signal to an RGB signal by an RGB decoder, and then sent to a gradation correction section n.
added to. The gradation correction section is a component that preliminarily adjusts the gradation so that it is suitable for processing in the single color film creation device 31 or color scanner 33, and allows adjustment of brightness, contrast, low middle tone, and high ride 1 shadow. ing. This gradation correction can be done by observing the image projected on the display monitor, and by observing the image displayed on the display monitor.
: This can be done while referring to the dot area ratio of each color, G, and B at any point on the open surface to be rewarded. Furthermore,
The corrected data is displayed on the display section n, and
It is configured so that it can be recorded on an external memory 3 such as a cassette tape, a program disc, or a paper tape, and used later when creating a color film or a separated version using the same input medium. ing. Note that when performing gradation correction, by comparing the images on the display monitors L and M, it is possible to directly compare the images before and after the correction.

When the gradation correction is completed, by pressing the correction completion instruction switch on the console The signal is converted into an I digital signal and written into a 7-frame memory 1 corresponding to each RIG and B signal. Written video message.

The signals are sent to the scanning line interpolation unit l by -scanning lines.

At this time, the scanning lines of even and odd fields are read out alternately, and the interlaced scanning method is converted to the progressive scanning method. This conversion avoids bearing, which is a drawback of interlaced scanning. Scanning line interpolation unit y
The number of scanning line signals to be transferred to is the number of arp signals obtained by subtracting the number of scanning lines corresponding to the blanking period from the number of j television scanning lines. In the scanning line interpolation section Z,
Perform interpolation calculations and increase the number of scanning lines from 11 to approximately 1 times
The number of scanning lines is increased to 9λ, and a portion of the scanning lines overlaps during exposure so that they cannot be recognized as separate lines.

The resolution can also be increased by the interpolation effect. In the interpolation calculation in the present invention, the margin or interpolation point for which a new w vote is to be set is determined by considering the contribution rate of the surrounding It is configured so that the Chiron method can be selected by switching a switch. The nearest and keeper methods use adjacent data as pixel data for interpolation points, and are suitable for images converted to λ values.
The bilinear method determines the pixel data at the interpolation point based on the assumption that the data between scanning lines changes linearly, and is suitable for images with many intermediate tones. Interpolation point I based on data correlation
It determines the I element data and is suitable for any image. This interpolation calculation requires 4 multiplications and additions per interpolated pixel/Iil element for about 10,000 iso pixels per lrs plane, so the calculation speed is slow and time-consuming in computer software processing. It takes too much. For this reason, the present invention is constructed with a scanning line interpolation section and a 29-fi-8-decoder, and outputs data to the output section of the next stage in real time, making it possible to produce films at extremely high speed.

The image information subjected to simultaneous R, G, and E scanning line interpolation calculations in the scanning line interpolation unit y is supplied to the output unit and output to either one color film or the film attached to the exposure unit of the color scanner, or both. The present invention also provides an editing function.

More advanced prepress output and automation are possible through the Inj-7 Ace with the Kasuru Rayaratos Nakayana System. When outputting to color film, the image information subjected to scanning line interpolation in the scanning line interpolation section y is sent to the high-resolution cathode ray tube of the color film production device 3/ through the color film production device interface〉, and R, G , B
Each color is sequentially displayed as a black and white image with wide optical wavelength energy in the visible range. A color film is placed in front of the high-resolution cathode ray tube through a filter that supports black and white images with R, G, and B information. Each filter is switched in synchronization with each black and white image signal and is sequentially exposed onto the color film. Once the exposure is complete, the color film is automatically advanced to enable exposure of the next selected screen. For color film, roll film with a size of ≦x7 is used, and the image size is standard.
xa fins can be obtained, and the quality of the top-view image is also extremely good, with the image size being about 1 times larger in area ratio than that obtained with conventional color cathode ray tube photography. Next, the case of outputting film from a color scanner will be described. The image information interpolated by the scanning line interpolation section is transferred via the color scanner interface J2 by a clock signal synchronized with the rotational speed of the color X+Yana 33. Transfer information is sent as an analog signal to the color computer section R of the color scanner 33.
, G, B signal amplification section, the color printing colors Y, M, O are processed through the color scanner's signal processing system.
, BK scratch signals are converted and applied to one exposed area of the film, and a series of Y, M, O, [! Output as an exploded version of the shoulder. Note that the separated plate size of each reference plate depends on the number of scanning line interpolations and the number of exposure lines of the color scanner, so it is approximately J, J
X u, J cm, approximately 4.4c X 1. tcs,
Approximately 9.7×lλ, Jcs, approximately IJ, I x /1.11
eIl)II? In addition,
In the present invention, it is also possible to supply the output of the color scanner 33 to the layout scanner system 341 to provide an editing function.

As described in detail above, according to the present invention, compared to the conventional method in which the original tape is directly played on a VTR and the desired frame is designated through written recording, and the automatic control of the VTIL is insufficient, There is no risk of damaging the tape, and it is possible to select and extract one side very efficiently and accurately, and the effect is truly great. In addition, the time pace corrector corrects the temporal deviation of the video image signal, the noise reducer suppresses the noise signal included in the video image signal, the detail corrector enhances the outline of the image, and the RGB signal gradation is corrected. After performing various image quality improvement measures such as converting the scanning method, increasing the number of scanning lines through λ-dimensional interpolation processing, eliminating scanning lines, and increasing resolution, color film and/or color Because it is a method of obtaining separated plates from a scanner, it has the same color tone, resolution, and TV scanning s*+ as the conventional method.
All problems regarding image quality will be resolved.

The present invention is not limited only to the embodiments described above, and numerous modifications and changes are possible. For example, in the above-mentioned embodiment, after the creation of color film or printed separation plates for one screen is completed, the next screen is extracted by pressing the frame extraction switch on the console. Alternatively, it is possible to detect the end of printing separation plate creation and automatically start extraction of the next field.Also, the contents of the frame memory can be rewritten even before the creation of color film or printing separation plates has finished. If it is after the time when the next screen can be extracted, extraction of the next screen can be started. In this way, processing efficiency can be further increased. Furthermore, in the above embodiment, the seven frames are extracted in the selected order, but they can also be extracted in the order of time codes, for example, and there is also a priority order among the plurality of selected fields. In such cases, it is possible to extract automatically according to the priority order, or it is possible to specify a specific screen to extract.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the editing and extraction apparatus of the present invention, and FIG. 2 is an explanatory diagram showing specified frames recorded on a master videotape. 1-1, l-1, l-3, l-4...input medium-3
...Input device switching unit, Tei...Automatic editing unit, j
...*IhcoF writing'p part, 6...Time code generator, l...Monitor, 9...1 inch VT
Rs //... Time code reading section, /2... Frame detection JARs, /J... Time code memory, lchi... External memory, /7... Time pace collector, /l. ...Noise reducer, l!・・・Detail collector, 〃...RGB decoder, 〃...
Tone correction unit, J...Scanning line interpolation unit, 31...Color film creation device, 33...Color scanner.

Claims (1)

[Claims] L In a video image plate-making device that creates printing films or printed separation plates from television images, the video signal from the input medium is recorded on a master videotape along with a time code fjAIi! A frame that writes the time code of the frame selected in the specified order to the time hood memory when any frame on the master tape is randomly specified by pressing a button or the like when a predetermined frame is selected from the master tape. The start, stop, and start of the master tape are written in the number writing section and in the frame number order or time code order written in the time code memory.
The video image processing system is characterized by having an extracting section that can automatically perform spring return, fast forward, and early spring return to search for the relevant frame, and perform master tape starching and stopping in accordance with subsequent work. Edit extractor.