JPS6386989A - File creating device for still picture of long size screen - Google Patents

Abstract

PURPOSE:To allow a simple device to eliminate the discontinuity of frames in connection points by detecting information out of an original scrolled on a straight line perpendicular to the scroll direction and at a fixed point within an image pickup range and continuously writing said information by one frame in a frame memory. CONSTITUTION:An FSS is used as an image pickup device. It samples by scanning two-dimensionally. A creating device is made up of a scroll screen creating device DSC1, the image pickup device FSS2, a scroll device 3 precisely scrolling a long size original, and a still picture file device DVF4 which receives a signal from the DSC1, and creats and transmits a file for still pictures. With this constitution, picture information on the scrolling original is continuously image- picked up under the same conditions, or the panning image pickup device continuously picks up images under the same conditions. Thus picture information is completely continues, and even if it is stored in the frame memory by the frame, the continuity of signals in the connection point in each memory is maintained. When non-accumulation type image pickup devices such as the FSS and a laser device are used as the image pickup device, no blur occurs.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a method for superimposing characters, etc. on a screen and scrolling (moving at a constant speed), for example in television broadcasting. This invention relates to a device for creating still image files such as.

(Prior art) In television broadcasting, characters, etc. are displayed vertically or horizontally on the screen to display player names and results in sports, cast and production sound names in dramas, breaking news, commentary in other broadcasts, etc. It is being released. At this time, no particular problem will occur if the displayed characters, etc. are kept stationary and switched to fire characters, etc. after a predetermined period of time has elapsed, but if the characters, etc. are moved continuously and scrolled, problems may occur. arise. Conventionally, in order to generate this scroll signal, the following steps were taken: 1. Mechanically scroll a long document with characters, etc. to be displayed, image this with a television camera, and record it on a VTR; A method of superimposing images on a video screen. ■ A method of capturing images of a long manuscript one frame at a time using a television camera, arranging them in memory to create a still image file, and then reading this and superimposing it on the screen. , (2) A method is used in which images are taken in real time using a flying spot scanner (hereinafter referred to as rFSSJ) while mechanically scrolling the original, and the images are superimposed on a screen and broadcast on air.

Even when not superimposing, when creating a still image from a long manuscript such as a picture scroll, use the method according to ■, ■, ■ above, and when creating a still image of the surrounding scenery, use a television. Images were taken by changing the camera angle and following method ① or ②.

(Problems to be Solved by the Invention) Regarding the case where an image is captured by the first television camera and recorded on a VTR, since the television camera is a storage type imaging device, black and white tone characters are recorded on the VTR. The drawback is that the images are not sharp when recording. Also, if the image is superimposed due to jitter in the running system of the VTR, the image becomes very unsightly. Also, expensive broadcast VTRs
Since it is dedicated to text scrolling, there is also the problem that the system becomes expensive.

In the case of the method of capturing the second manuscript one frame at a time and creating a still image file, the long manuscript is written continuously,
Since the still image file is not divided into individual frames, deviations occur in the division of each frame due to differences in the magnification of the imaging device and the stopping precision of the scroll device. Unsightly discontinuities also occur at the connection points due to image distortion due to deflection distortion of the imaging device, uneven running of the scrolling device, and geometric distortion of the optical lens.

This discontinuity is not very noticeable when the character screen is superimposed on the background, but when it is a still image with a neutral color that is not superimposed, the discontinuity becomes obvious and can be fatal. Even if an extremely high-precision imaging device is used to remedy this problem, it is still difficult to completely remove it.

The method of mechanically scrolling the third document and taking an image in real time with an imaging device such as a flying spot scanner is a method that should be avoided because there is a high possibility of making a mistake, and if a mistake is made, it cannot be undone.

It is an object of the present invention to provide a device that can file and reproduce sharp images of long manuscripts as still images without creating discontinuities at the connection points of each frame using an hour wheel-like device.

(Means and effects for solving the problem) In order to prevent discontinuities from occurring at the connection points of each frame, in the present invention, a straight line perpendicular to the scrolling direction (hereinafter referred to as "imaging This method detects information from the document scrolling above (referred to as "line") and continuously writes this information frame by frame into frame memory to create a still image file. The created still image file is captured under exactly the same conditions in the scrolling direction on the imaging line, so the video signal is completely continuous even at the connection points of each frame, and there is no deviation or distortion. do not have.

The first method for detecting information from scrolling originals (including binary originals and intermediate color originals) is FSS.
There is a method in which two-dimensional scanning is performed using an imaging device such as the above, and data on the imaging line is sampled and held. in this case,
There is an advantage that the existing imaging device can be used as is. Second
As a method, there is a method of capturing an image on the imaging line using a suitable imaging device. As this imaging device, it is possible to use a device that scans and illuminates the imaging line on the screen with a laser and picks up the diffusely reflected light, or a device that picks up the image using a line sensor, but the latter has a simpler configuration. There is also a method of scanning the FSS raster in a -dimensional, i.e. linear, manner, but in this case, in order to prevent burn-in of the fluorescent material, the electron beam of the FSS tube is intermittently irradiated, and the irradiation on the FSS tube surface is It is necessary to take measures such as changing the position from time to time.

In any of the above cases, in order to avoid distortion in the scrolling direction, it is necessary to keep the scrolling speed of the document strictly constant, and if possible, it is desirable to scroll with pixel-by-pixel precision.

In order to obtain sharp images, for example, FS is used as an imaging device.
It is preferred to use S. The same applies to laser scanner devices. Since FSS is a non-storage type imaging device,
Even when an image of a scrolling document is captured, no blurring occurs. However, even with an accumulation type television camera or an imaging device using a line sensor, the degree of blurring can be reduced when the scrolling speed is slowed down.

What has been described above is a case where the image capturing device is fixed and the document is scrolled, but the same applies when the document is fixed and the image capturing device is panned (moving the image capturing device vertically and horizontally). For example, this applies to creating still images such as surrounding scenery, 360-degree situations in a large room, and picture scrolls that cannot be scrolled. In this case as well, it is necessary to keep the panning speed constant in order to avoid distortion in the panning direction.

(Example) FIG. 1 is a diagram showing the connection of each device when sampling is performed while performing two-dimensional scanning using an FSS as an imaging device. 1 is a device for creating a scroll screen (rDSCl (Dig
2 is an FSS that captures an image of a document, 3 is a scroll device that precisely scrolls a long document, and 4 is a DSC1.
A still image file device (hereinafter referred to as r DV F
It is abbreviated as J (Digital Video File). ).

FIG. 2 is a diagram showing the configuration of the scroll device 3 described above, in which reference numeral 11 indicates a long scrolling document, and numeral 11 indicates the scrolling direction of the document. 12 is a spool for winding up the document; 13 is a take-up take-up motor; and 14 is a buffer slip ring. Reference numeral 15 represents a spool for sending out the original, and reference numeral 16 represents a slip ring for applying back tension. 17 is a stepping motor for providing excellent feed, 18 is a capstan, and 19 is a pinch roller. Reference numeral 20 denotes a controller for the stepping motor 17 that drives the capstan 18, which receives the run command from the DSCI, controls the stepping motor 17, and can send pixel by pixel. 21 is a controller for the above-mentioned tick-up motor. Reference numeral 22 denotes an imaging range on the original 11, and imaging is performed on a straight line P at the center of this imaging range.

FIGS. 3A and 3B are explanatory diagrams illustrating the relationship between the direction of characters, etc. of a long document, the scroll direction of the document, and the imaging line in horizontal scrolling and vertical scrolling. In either case, sampling can be performed on the imaging line P perpendicular to the scrolling direction of the original 11 at the center of the imaging range 22, and as shown in FIG. Even if it is perpendicular to P, the third
The scanning range 22 may be parallel as shown in FIG. B, and the scanning range 22 may not be the scanning range of a normal television screen.

FIG. 4 is an explanatory diagram of an embodiment in which an image signal is obtained by a line sensor. In this embodiment, the imaging line 55 of the scrolling document 11 is illuminated by the light source 50 and imaged by the line sensor 58.

At this time, since the illumination range 56 is only a rectangular range including the imaging line 55, a linear light source is used as the light source, and the cylindrical lens 53 and the half-moon lens 54 emit light beams in the horizontal and vertical directions. By converging, a rectangular illumination range 56 including the imaging line 55 is effectively illuminated. 52 is a diffusion plate for uniformly illuminating light. The image on the imaging line is projected onto a line sensor 58 via a lens 57. The line sensor 58 is made to run freely at a frequency that provides the best S/N ratio.

Note that the imaging line 55 may be illuminated by a linear photodiode array, and a contact type may be used as the line sensor.

FIG. 5 is a block diagram showing the configuration of the DSCI and DVF 4. The DSC1 receives the video signal from the FSS2, converts it into a digital signal using an A/D converter 61, and stores it in the frame memory 62. A frame memory control circuit 63 not only controls the frame memory 8 but also sends a sample hold signal to the A/D converter 61 so that A/D conversion is performed at a predetermined position on the screen. or,
FSS2 and scroll device 3 send a Herran command to control scrolling of the document, and send a freeze command to DVF4.

The DVF4 only needs to have the function of receiving the video signal and freeze command from the DSCI, storing it as a still image frame by frame, and outputting each frame continuously as necessary. A device can be used. An example of this is shown in Figure 5.
/C separation circuit 65 separates the luminance signal Y and color signal C,
It is temporarily stored in the frame memory 66. At this time, DS
A freeze command from the frame memory control circuit 63 of the CI is transmitted to the frame memory control circuit 67 of the DVF 4 via the system controller 78 and stored therein.

The stored image information is sent to the data bus 68 via the frame memory control circuit 67. At this time, a control signal is also sent to the control bus 69. This image information is
The disk controller 70 controls the disks 71 and 7.
2, Y and C are stored separately in one frame each.

Reading from these disk devices 7L72 is performed using the operation panel 7.
9 via the system controller 78. The read data is stored in a set of two frame memories 74.
．． The signal is stored in the memory controller 75, read out under the control of the memory controller 73, and inputted to the fader circuit 76 to provide commonly used video effects. In this example, there are five types of effects: fade, cut, wipe, roll, and scroll, but other effects can be added if necessary. A known circuit may be used as the circuit. The effect signal created in this way is input to the encoder 77, converted into an RGB signal, and outputted from the terminal 80.

(Effects of the Invention) As explained above, when creating a still image file according to the present invention, image information of a scrolling document is continuously captured under the same conditions or by a panning imaging device. Since images are captured continuously under the same conditions, the image information is completely continuous, and even if this is stored frame by frame in the frame memory, the continuity of the signal is not lost at the connection point of each memory, causing distortion and deviation. Never. Furthermore, when a non-storage type imaging device such as an FSS or a laser device is used as the imaging device, a sharp image can be obtained without blurring. Also, even if you use a storage type imaging device, if you want to slow down the scrolling speed of the document,
You can obtain sharp images without blur.

Since the still image file created in this way has no discontinuity between pages, it is possible to obtain a good still image with good continuity between adjacent screens on a wipe or scroll screen.

According to the method described above, it is possible to obtain a still image of a long object to be imaged with the width of the imaging line, but it is also possible to obtain a still image of a long object to be imaged with the width of the imaging line, but it is also possible to obtain a still image of an object to be imaged that has an even wider two-dimensional extent, such as a manuscript or a landscape. The entire still image can be obtained by dividing the image into several ranges whose width is the length of the imaging line and capturing these ranges one after another. In this case, the connection points in the direction of the imaging line will be discontinuous, but
In the case of a binary screen, it is inconspicuous and can be used for practical purposes.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the still image file creation device of the present invention using FSS as an imaging device, FIG. 2 is a diagram showing the configuration of a document scrolling device, and FIG. An explanatory diagram illustrating the relationship between the direction of characters, etc. on the document during horizontal and vertical scrolling, the scrolling direction of the document, the main scanning direction of the FSS bright spot, and the direction of the imaging cloth. Diagram for explaining the principle of loading. FIG. 5 is a block diagram showing the configuration of the DSC and DVF. 1...DSC2...FSS 3...Document scrolling device 4...DVF 11...Document P...
Imaging line 12...Spool 13...Tick-up motor 14...Slip ring 15...Spool 16
...Slip ring 17...Tesla ping motor 18...Capstan 19...Pinch roller 20...Stepping motor controller 21.
... Tick-up motor controller 22 ... 1 Most image range 50 ... Line light source 51 ... Reflection plate
52... Diffusion plate 53... Cylindrical lens
54... Half-moon lens 55... Imaging line
56...Illumination range 57...Lens 5
8... Line sensor 61... A/D converter 6
2... Frame memory 63... Frame memory control circuit 64... Ink face 65... Y/C separation circuit 66... Frame memory (Y/C) 67... Frame memory control circuit 68. ...Data bus 69...Control bus 70...Disk controller 71...Disk (Y)? 2...Disk (C) 73...Memory controller

Claims (1)

[Claims] 1. means for capturing image information on an imaging line; means for scrolling a long document in a direction perpendicular to the imaging line or panning an imaging device; A still image file creation device for a long screen having a memory means for writing and reading image information. 2. A still image file of a long screen as claimed in claim 1, wherein the imaging means is configured with an imaging device that performs two-dimensional scanning, and the image information is sampled at a predetermined imaging line on the screen. Creation device. 3. The still image file creation device for a long screen according to claim 2, wherein the imaging device includes a flying spot scanner. 4. Creating a still image file of a long screen as claimed in claim 1, wherein the imaging means is configured with an imaging device having a line sensor, and the line sensor captures an image on a predetermined imaging line. Device. 5. Stillness of the elongated screen according to claim 1, wherein the imaging means comprises a laser that scans a predetermined imaging line on the elongated screen, and a device that captures an image illuminated by the laser. Image file creation device.