JPH0279576A - Picture split synthesis system - Google Patents

Abstract

PURPOSE:To easily execute the adjustment required for picture split synthesis by inserting a reference mark being picture split synthesis border to each of plural split pictures as a video signal. CONSTITUTION:Two video signals Va, Vb outputted from a video camera 30 are fed to reference mark generating circuits 31a, 31b and video signal switching circuits 32a, 32b and the reference mark generating circuits 31a, 31b fetch the video signals Va, Vb to generate prescribed reference marks Ma, Mb. The reference mark Ma is switched on the same pattern with a prescribed ratio with the video signal Va, and the reference mark Mb is switched on the same pattern with a prescribed ratio with the video signal Vb, and fed to a picture changeover switch 33 and video recorders 4a, 4b. The switch 33 selects either of the outputs from the video signal switching circuits 32a, 32b and gives its output to a video monitor 35.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention divides a subject into a plurality of images and photographs them, obtains a video signal for each divided image, and captures a plurality of images obtained as each of the video signals. The present invention relates to an image division and composition method for reproducing and displaying divided images and combining them into a single image, and particularly relates to an image division and composition method that allows image division and image composition to be performed accurately and easily.

[Conventional technology]

Conventionally, this type of image division and synthesis method requires a photographing and recording device,
This is realized with a playback display device. In such an image division/synthesis method, the photographing/recording device divides the subject into a plurality of images, photographs them, obtains a video signal for each image, and records them. Further, the playback display device plays back and displays the plurality of divided images obtained as each of the video signals, and combines them into a single image. According to such an image division/synthesis method, one image is divided into a plurality of images by the photographing/recording device, and these are imaged by separate image sensors, so that when one image is captured by one image sensor, It is possible to obtain an image having a resolution that is an integral multiple of that of a single image sensor.

FIGS. 13 to 18 are explanatory diagrams of the conventional image division and synthesis method described above.

FIG. 13 is a block diagram showing a conventional image division and synthesis method.

In FIG. 13, the conventional image division/synthesis method is comprised of one closest recording device IA and a playback display device 2A. The photographing and recording device WIA is composed of a video camera 3 and video recorders 4a and 4b. The playback display device 2A includes a display device 20 and video players 21a and 21b.

FIG. 14 is a diagram showing the optical system of the video camera 3 of the photographing and recording apparatus IA.

In FIG. 14, the video camera 3 is composed of - video cameras 5. This video camera 5 optically captures the subjects Aa and Ab through a single objective lens 6, and divides them into two image sensors 7a.
, 7b, and can be extracted as electrical signals from each of the most image elements 7a, 7b. The optical system of the video camera 5 optically captures the subjects Aa and Ab through the objective lens 6 and forms a primary image (
(Pa, Pb) shown in the figure, and the -next imaging Pa.

Pb is divided into two by the right-angle mirror 8, and each element is divided so that a secondary image (Sa, Sb in the figure) is formed on the surface of each image sensor 7a, 7b through two lenses 9a, 9b, respectively. is located.

According to such an optical system of the video camera 5, the subject A
a, Ab are optically primary imaged (Pa, Pb) on the imaging plane of the objective lens 6. The second-order images Pa and Pb are divided into two images by a right-angle mirror 8. The two-split image is secondarily formed (Sa, Sb) onto each image sensor 7a, 7b through each relay lens 9a, 9b.

Each of the divided images Sa is generated by each of the image sensors 7a and 7b.
, Sb are converted into electrical signals, and these are transmitted to the video camera 5.
The video signals are extracted as two video signals through a signal processing circuit system (not shown). These video signals are recorded by video recorders 4a and 4b, respectively.

When each of the video signals is supplied to a video monitor (not shown), the screen shown in FIG. 15 (a) is displayed on the screen of the video monitor.
), and divided images Sa and Sb as shown in (b) are displayed. The divided images Sa and Sb are shown in FIGS. 15(a) and 15(b).
), the images of the center of the subject (Ca and Cb in the figure) are displayed slightly overlapping each other.

FIG. 16 is a diagram showing another configuration of the optical system of the video camera 3 of the photographing and recording apparatus IA.

In FIG. 16, the video camera 3 is composed of two video cameras 15a and 15b. The optical systems of the video cameras 15a and 15b are constructed as follows. The optical system of the video camera 15a is composed of an objective lens 16a that optically captures a subject Aa, and an image sensor ILa that converts an image formed by the objective lens 16a into an electrical signal. The optical system of the video camera 15b includes an objective lens 16b that optically captures the subject Ab, and an image sensor 17 that converts the image formed by the objective lens 16b into an electrical signal.
It is composed of b.

The subject Aa is optically imaged (Sa) on an image sensor 17a through an objective lens 16a in the video camera 15a. Further, the subject Ab is optically imaged (sb) on the image sensor 17b via the objective lens 16b in the video camera 15b. Each of the divided images S, a, Sb is captured by each of the image sensors 17a and 17b.
is converted into an electric signal, and each video camera 15a, 15b
The signals are respectively extracted as video signals through a signal processing circuit system (not shown). These video signals are recorded by video recorders 4a, 4b.

When each of the video signals is supplied to a video monitor (not shown), the screen shown in FIG. 15(a) is displayed on the screen of the video monitor.
, and divided images Sa and Sb as shown in (b) are displayed. The divided images Sa and Sb are shown in FIGS. 15(a) and (b).
As can be understood from the figure, the images of the center of the subject (Ca and Cb in the figure) are displayed slightly overlapping each other.

FIG. 17 (N is a configuration diagram of the display device 20 of the reproduction display device j2A. FIG. 17 (U) is an explanatory diagram showing an image displayed on the screen of the display device 20.

In FIG. 17(1), the display device 20 includes a screen 22 and a video projector 2 that displays an image on the screen 22 based on each video signal from the video players 21a and 21b of the playback display device 2A.
3a and 23b.

The video projector 23a projects and displays the video signal of the divided image Sa reproduced by the video player 21a on the screen 22 as an image Sa.

Further, the video projector 23b projects and displays the video signal of the divided image sb reproduced by the video player 21b on the screen 22 as an image sb.

Here, the horizontal positions of the divided images Sa and Sb projected from the respective video projectors 23a and 23b are adjusted.

This can be done by electrically adjusting the deflection of the picture tubes of the video projectors 23a and 23b, or by adjusting the physical spacing between the video projectors 23a and 23b, so that the divided images Sa, Execution is performed so that the parts (Ca, Cb) displayed overlapping each other in Sb match.

As a result, a seamless composite image as shown in FIG. 17 (■) can be obtained on the screen 22.

By doing so, a high-resolution image can be obtained on the screen 22, which has twice the resolution compared to that obtained when capturing an image using one image sensor.

[Problem to be solved by the invention]

By the way, in the conventional image division and compositing method, there is no special landmark when dividing the image as described above, so when shooting, the images of the center of the subject in each divided image may overlap each other. The video camera's optical system was roughly adjusted so that the images overlapped little by little. In addition, when compositing each divided image, each image is played back and displayed on a display device, and the horizontal position of each image is adjusted while viewing the actual composite image to obtain the correct composite image. .

In this way, with the conventional image division and composition method described above, there is no standard when dividing and combining images, and the video camera and display device must be adjusted each time they are taken or played back and displayed. Because it doesn't happen,
Adjustments are not only complicated, troublesome, and time-consuming;
The drawback is that it lacks versatility as a system.

In addition, in the image division and synthesis method described above, when a picture tube is used as the display device of the reproduction display device, unlike a liquid crystal display device, the picture tube displays an image by deflecting an electron beam. The following phenomenon will occur. That is, since the deflection characteristics of the picture tube are affected by the amount of electron beam, a phenomenon occurs in which the size of the image expands or contracts depending on the brightness (luminance) of the image. In other words, as shown in FIG. 18, the image displayed by the picture tube expands when the image is bright, and conversely contracts when the image is dark. Therefore, in the conventional image division and composition method, if a picture tube is used as the display device of the reproduction display device, even if divided images are composited at a certain image brightness,
There is a drawback that if the brightness of this image changes, the overlap of the image composite portion will change. In particular, when attempting to perform seamless image synthesis as shown in FIG. 17 using the conventional image division and synthesis method described above, the deviation is noticeable and the display device must be readjusted for each image. There is.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and provides a practical image division and composition method that can easily and accurately perform the adjustments required for image division and composition, and that can be standardized as a system. The purpose is to

[Means to solve the problem]

In order to achieve the above object, the image division and synthesis method according to the present invention divides a subject into a plurality of images and photographs them, obtains a video signal for each divided image, and combines the plurality of images obtained as each of the video signals. In the image division and synthesis method in which the divided images are played back and displayed again and combined into a single image, a reference mark that serves as the image division/composition boundary is inserted as a video signal into each of the plurality of divided images, and the image is divided based on the reference mark. The image capturing device and display device are adjusted in advance, and the images are divided and combined.

[Effect]

This image segmentation and synthesis method first inserts the video signal of the reference mark into the video signal of each segmented image obtained by the 1st shadow device, and then performs optical image segmentation of each reference mark and each segmented image. Adjust the imaging device so that the boundaries match. Next, each of the reference marks is displayed on each of the divided screens of the display device, and the display device is adjusted so that each of the reference marks matches the optical image synthesis boundary of each of the divided screens. By initializing the photographing device and the display device in advance as described above, the image of the subject that is divided into a plurality of images and photographed by the photographing device is correctly combined with the original image on the display device.

Furthermore, when a picture tube is used as a display device, (1) the reference mark is used to adjust the initial settings of the projection device to correct the expansion and contraction of the image.

As described above, according to the image division and synthesis method of the present invention, image division and synthesis can be easily and accurately performed, and the system can be standardized.

〔Example〕 Embodiments of the present invention will be described below based on the drawings.

<First Embodiment> FIGS. 1 to 8 are for explaining a first embodiment of the present invention.

FIG. 1 is a block diagram showing a system implementing an embodiment of the image division and synthesis method according to the present invention.

In the first time, the image division and synthesis method is composed of an I-most image recording device WIB and a playback display device 2B.

The photographing and recording device IB includes a video camera 30, reference mark generation circuits 31a and 31b, and a video signal switching circuit 3.
2a, 32b, an image changeover switch 33, video recorders 4a, 4b, and a video monitor 35. In this embodiment, the video camera 30 is constituted by a video camera 5 having an optical system using a single objective lens 6 as shown in FIG.

The two video signals Va and Vb output from the video camera 30 are sent to reference mark generation circuits 31a and 3, respectively.
1b, and the video signal switching circuit 32a.
, 32b. The reference mark generation circuits 31a, 31b generate video signals Va, Vb.
The circuit structure is such that the reference marks Ma and Mb are generated by taking in the reference marks Ma and Mb.

The reference mark Ma is the video signal switching circuit 32a.
and is switched on the same screen at a certain ratio with the video signal Va, and its output is supplied to the image changeover switch 33 and the video recorder 4a. Further, the reference mark Mb is manually input to the video signal switching circuit 32b, and is switched on the same screen at a certain ratio with the video signal vb, and its output is supplied to the image switching switch 33 and the video recorder 4b. It has become so. The image changeover switch 33 selects one of the outputs from the video signal changeover circuits 32a and 32b, and supplies the selected output to a video monitor 35.

The playback display device 2B includes a display device 20 and video players 21a and 21b. The display device 20 basically has a structure shown in FIG. 17. Note that the reproduction display device 2B adjusts the display device 20 using the reference mark generation circuits 31a and 31b at the initial setting stage.

FIG. 2 is an explanatory diagram showing a glass plate with an optical mark attached to the optical system of the video camera 5 shown in FIG. 14. FIG. 3 is an explanatory diagram showing a divided image obtained when the optical mark is attached and photographed with a video camera.

In FIG. 2, the glass plate 50 is provided with cross-shaped optical marks 51u and 51d. When such a glass plate 50 is placed on the primary imaging plane of the objective lens 6 of the video camera 5 having the optical system shown in FIG. 14, divided images Sa, Optical marks 51u and 51d can be added on Sb, respectively. In this case, straight lines connecting the optical marks 51u and 51d respectively serve as image division/composition boundaries. In addition, in Figure 3, the area surrounded by broken lines shows the scanning range of overscan and scan, which corresponds to the size of a normal TV screen, and the area surrounded by solid lines shows the wide scanning range of underscan, which is used for video monitors, etc. Shows the scanning range. Since the optical marks 51u and 51d are adjustment marks, they need to be set outside the vertical scanning range of the overscan, as shown in FIG. 3, so that they do not appear on the screen of the display device 20.

The divided images Sa and Sb to which the optical marks 51u and 51d are attached in this way are outputted from the video camera 30 as video signals Va and Vb. The video signals Va and Vb are respectively supplied to reference mark generation circuits 31a and 31b and video signal switching circuits 32a and 32b.

FIG. 4 shows reference mark generation circuits 31a, 31b and video signal switching circuits 32a, 32 used in the above embodiment.
FIG. 2 is a block diagram showing a specific example of FIG.

The reference mark generation circuit 31a is configured as follows. That is, when the video signal Va from the video camera 30 is input to the reference mark generation circuit 31a, this video signal Va is sent to the video signal input circuit 311, the subcarrier separation circuit 312, and the horizontal synchronization signal separation circuit. 313.

The subcarrier separation circuit 312 separates the subcarriers and supplies them to the quadrupling circuit 314 as a digital signal with a pulse repetition frequency of 3.579545 CM Hz. The quadruple circuit 314 quadruples the digital signal with a pulse repetition frequency of 14.
31818 (MHz) digital signal.

The digital signal is supplied to a counter circuit 315. Further, the counter circuit 315 is configured to have its count reset by a horizontal synchronization signal from the horizontal synchronization signal separation circuit 313. The counter circuit 315 counts and amplifies the digital signal from the quadruple circuit 314. The output of the counter circuit 315 is supplied to a count value setting detection circuit 316.

ing. The count value setting detection circuit 316 outputs a constant pulse signal when the count value from the counter circuit 315 reaches a predetermined value. When a pulse signal is output from the count value setting detection circuit 316, the one-shot multi-pipe break circuit 317 is activated and outputs a pulse of a constant width to the switching circuit 319. The switching circuit 319 outputs the signal from the reference mark brightness level setting circuit 318 only when there is an output from the one-shot multi-by-break circuit 317, and outputs the signal from the video signal cut black level addition circuit 311 at other times. It is designed to output a level signal. The output signal from the switching circuit 319 becomes the output from the reference mark generation circuit 31a.

Note that the reference mark generation circuit 31b has the same configuration as the reference mark generation circuit 31a.

Further, the video signal switching circuit 32a includes a switch circuit 321 and a control circuit 322 that includes a counter and the like that forms a signal for switching the switch circuit 321 in synchronization with a horizontal synchronizing signal.
It is composed of. The switch circuit 321 switches so that either the video signal Va or the output signal from the reference mark generation circuit 31a is output.

Note that the video signal switching circuit 32b has the same configuration as the video signal switching circuit 32a described above.

A first embodiment configured in this manner will be described.

The reference mark generation circuit 31a generates a video signal V of the divided images.
Starting from the horizontal synchronizing signal pulse a, reference pulses are generated at constant time intervals (Ta) as shown in FIG. 5(a). This can be obtained by sending the output from the video signal cut black level addition circuit 311 of the reference mark generation circuit 31a to the switching circuit 319, and switching the switching circuit 319 with a pulse signal from the one-shot multi-pipe rake circuit 317. can. The constant time interval (Ta) of the reference pulse is determined by the count value setting detection circuit 316.
This is the value set in . Further, the brightness level of the video signal of this reference pulse can be varied by a reference mark brightness level setting circuit 318, and the base of the reference pulse is a black mark. When such a video signal is viewed on the video monitor 35, it is displayed as a bright line with a black level (shaded area) as a background, as shown in FIG. 6(a), and this bright line becomes the reference mark Ma. This reference mark Ma can be generated at time intervals (
Ta) can be varied and can be moved horizontally on the screen shown in FIG. 6(a).

By the way, as mentioned above, when using a picture tube as the display device 20, the size of the image changes depending on the brightness (luminance) of the image, so in order to fix the position of the reference mark Ma, it is necessary to make the background brightness uniform. It is necessary to keep it constant. Therefore, in this embodiment, the background is set to a black level, but as long as the background brightness is uniform and constant, it may be unified to another luminance signal level.

Further, the video signal of the reference mark Ma output from the reference mark generation circuit 31a is transmitted to the video signal switching circuit 32.
supplied to a. A switching circuit 321 of the video signal switching circuit 32a switches between the video signal Va and the reference mark Ma.
video signals at a certain ratio on the same screen. The timing of this switching is controlled by a signal output from the control circuit 322 according to the count value of the horizontal synchronization signal. This switching output signal is supplied to the image changeover switch 33 and the video recorder 4a. This signal is displayed on the screen of the video monitor 35 as shown in FIG.
) is displayed as shown.

Here, the shaded area indicates the black level, and the white area indicates the image of the video signal Va.

The above-described operation is the same for the reference mark generation circuit 31b and the video signal switching circuit 32b.

Therefore, when the video signal of FIG. 5(b) outputted from the reference mark generation circuit 31b is viewed on the video monitor 35, it is displayed as a bright line with a black level background as shown in FIG. 6(b). This bright line becomes the reference mark Mb. This reference mark Mb can have a variable time interval (Tb) and can be moved horizontally on the screen shown in FIG. 6(b). In this way, the video signal of the reference mark Mb output from the reference mark generation circuit 31b is switched on the same screen at a certain ratio with the video signal vb by the video signal switching circuit 32b, and this switching output signal is On the screen of monitor 35, the seventh
It is displayed as shown in Figure (b).

In FIGS. 7(a) and 7(b), reference marks Ma and Mb are displayed in the diagonally shaded areas at the top and bottom of the image, respectively, and optical marks 51u are displayed above and below the white area of the image.

51d is shown. Here, since adjustment has not yet been made, the reference marks Ma, Mb and the optical marks 51u, 51
d, a deviation has occurred. Therefore, video camera 3
In addition to adjusting the optical system of 0, the reference mark generation circuit 3
Reference marks Ma of 1a and 31b, time interval Ta of Mb,
By adjusting Tb, both marks are made to match each other. When adjusting the optical system of the video camera 30, for example, by moving the right angle mirror 8 of the video camera 5 shown in FIG. 14 in the optical axis direction of the objective lens 6,
The horizontal positions of the optical marks 51u and 51d of each divided image can be moved symmetrically.

After moving the optical marks 51u and 51d to the required positions in this way, the time intervals Ta and Tb between the reference marks Ma and Mb are adjusted so that the reference marks Ma and Mb match the optical marks 51u and 51d, respectively. adjust. After adjusting in this way, the values of the time intervals Ta and Tb are T. ,T,
. The fiducial marks Ma and Mb at this time are fiducial marks Mao.

Mbo. With this adjustment, the image dividing/combining boundary is replaced by the straight line connecting the optical marks 51u and 51d, respectively, with the reference marks Mao and Mbo, and is newly set.

When a picture tube is used as the video monitor 35, the size of the image expands or contracts depending on the brightness of the background image, and the optical mark 51u is dragged along by this.

Although the position of 51d also moves, the positions of the newly set reference marks Mao and Mbo are unrelated to the brightness of the image and can therefore be used as absolute references. Furthermore, the optical reference has been replaced with an electrical reference, which facilitates subsequent adjustments.

By the way, the images shown in No. 71 (a) and (b) are also supplied to the video recorders 4a, 4b as the output signals of the video signal switching circuits 32a, 32b, and are recorded.

Here, the reference mark Ma recorded with each divided image
o and Mbo are outside the overscan vertical scanning range shown by the broken line in Figure 3 and do not appear on a normal TV screen, so there is no problem even if they are displayed on the display unit W20 during playback display. Or this reference mark Mao, M
By recording the BO, it is very convenient to check the dividing and compositing boundaries of images when editing a videotape.

Next, the display device 20 of the reproduction display device 2B will be adjusted using the reference mark generation circuits 31a and 31b set to the same value of time interval T no + T bo. Reference mark generation circuit 31 used at this time
a and 31b may be those used for adjusting the photographing and recording device IB. Of course, a separately provided reference mark generation circuit may be used. Further, the input may be any standard video signal, and the content of the image does not matter.

Time interval T1°, Tb. The reference mark Mao output from the reference mark generation circuits 31a and 31b set to the value of
, Mbo are supplied to the display device 20. Since the image displayed on the display device 20 has not yet been adjusted, there are reference marks Mao and Mb as shown in FIG. 8 (H).

is displayed at a distance.

Here, by electrically or physically adjusting the horizontal position of each image projected from the video projectors 23a and 23b of the display device 20, the two reference marks Mao and Mbo are set as follows. Figure 8 (n
), the screen 2 of the display device 20
Match the tree on the center line (Cs) of 2. Through such adjustment, the image division/composition boundary is set on the center line of the display device 20.

In this way, the adjustment of the display device 20 of the playback display device 2B is performed based on the standards of the reference marks Mao and Mbo, which are completely independent from the content of the divided image that is most imaged by the video camera 30 of the video recording device IB. has been standardized, making it easier to coordinate the large number of display devices used in the system, and
There is also no need to readjust the image every time a photograph is taken or a playback display is performed.

With the above-described adjustment, the initial settings of the photographing/recording device IB and the playback/display device 2B are all completed.

After such initial settings, the video signals Va, V of the divided images photographed by the video camera 30 of the photographing and recording device IB are
b is input to the video recorders 4a and 4b and recorded through the reference mark generation circuit 318.degree. 31b and the video signal switching circuits 32a and 32b, respectively. Video signals of divided images recorded on a recording medium such as a videotape are played back by the video players 21a and 21b of the playback display device 2B, respectively, and displayed on the screen 22 of the display device 20. Further, as shown in FIG. 1, video recorders 4a, 4b and a video player 21
It is also possible to directly display the video signal of each divided image output from the video signal switching circuits 32a and 32b of the photographing and recording device IB on the screen 22 of the display device 20 of the playback display device 22B without going through the video signal switching circuits 32a and 21b. .

When a picture tube is not used as the video monitor 35 or display device 20, such as a liquid crystal display device,
With the above initial settings, all the divided images captured by the video camera 30 are correctly combined on the screen 22 of the display device 20 without requiring any subsequent adjustment.

On the other hand, when picture tubes such as the video projectors 23a and 23b are used as the display device 20 as in this embodiment, the brightness of the new image at the time of shooting is different from the image at the time of initial setting, and accordingly, the image The size expands and contracts. Therefore, it is necessary to correct the deviation due to this expansion and contraction.

The above-mentioned characteristics of a picture tube do not change much depending on the type of picture tube, so if a picture tube is used as the video monitor 35 used during shooting, and correction can be made using this, the display device 20
There is no need to correct it. In this case, on the screen of the video monitor 35, as in FIG.
d is shifted, and this shift corresponds to the amount of expansion and contraction of the image to be corrected. Therefore, the optical system of the video camera 30 is adjusted and optical marks 51u and 51d are placed on the reference marks Mao and Mbo.
If they match each other, the correction at the time of photographing is completed. With this correction at the time of photographing, even if a picture tube is used in the display device 20, a correct composite image can be obtained without readjusting the display device 20.

<Second example> Next, a second embodiment of the present invention will be described.

In the apparatus for realizing the second embodiment, the video camera 30 of the photographing and recording device 1B is replaced with the video camera 5 having the optical system shown in FIG. 14, and a video camera having the optical system shown in FIG. 16. It consists of two units, 15a and 15b, and there are no other changes in the other configurations. Therefore, the same components are given the same reference numerals and their explanations will be omitted. Further, this embodiment will also be explained using FIG.

In this way, in the second embodiment, if the video camera 30 is composed of two video cameras 15a and 15b, it becomes impossible to attach a common optical mark to each divided image as in the first embodiment. Therefore, for such a configuration,
Initial settings and corrections at the time of shooting are performed by other methods without using optical marks. As described above, the feature of the second embodiment is that no optical mark is used, so the video camera 5 having the optical system shown in FIG. 14 can also be used with this second embodiment. In this case, the temporary glass with optical marks is no longer required.

In FIG. 1, the video camera 15 of the video camera 30
Video signals a and Vb outputted from a and ljb and a video signal of the reference mark Ma1Mb outputted from the reference mark generation circuits 31a and 31b are supplied to video signal switching circuits 32a and 32b. In FIG. 4, the switching circuit 321 of the video signal switching circuits 32a and j2b is as follows:
As in the first embodiment, the video signals Va, Vb and the reference marks Ma, Mb are switched at a certain ratio. Here, the optical system of the video camera 30 and the reference marks M a , M of the reference mark generation circuits 31 a and 31 b
By adjusting the time intervals Ta and Tb of b, the image of the center of the copy, which is displayed on the screen of the video monitor 35 with each divided image slightly overlapping each other, as shown in FIG. The common part (the top of the roof of the house in FIG. 9) and the reference marks Ma and Mb are made to coincide with each other. The values of the time intervals Ta and Tb after adjusting in this way are T-o and Tb. The reference marks Ma and Mb at this time are referred to as reference marks Mao and Mbo.

With this adjustment, the image division/composition boundary is replaced from the common part of the subject to the reference marks Mao and Mbo,
This will be a new setting.

Next, the same T. ,Tb. Using the reference mark generation circuits 31a and 31b set to the value , the display device 20 of the reproduction display device 2B in FIG. 1 is adjusted. This adjustment procedure is the same as that in the first embodiment, so the explanation will be omitted. Furthermore, regarding the correction procedure required when photographing when using a picture tube as the display device 20, the optical mark in the first embodiment can be adjusted by replacing it with a common part of the subject in the second embodiment. , we will omit explaining the procedure.

In this way, even with the initial settings and the corrections made at the time of photographing in the second embodiment, it is possible to easily obtain a correct composite image as in the first embodiment.

By the way, when using a picture tube as the video monitor 35, if you select a vertical line as a common part of the subject and match the top of this vertical line with the reference marks Mao and Mbo on the screen of the video monitor 35, the It is displayed as shown in Figure 10. This vertical line can also be regarded as an image division/composition boundary. As can be seen from FIG. 10, the vertical lines La and Lb (image division/composition boundaries) are displayed slightly curved, and the degree of the curve is also vertical, vi! It differs depending on La and Lb. The reason for this display is that the brightness differs for each part of each divided image, and the horizontal expansion and contraction of each divided image is also not uniform depending on the vertical position of each image. Therefore, when a picture tube is used as the display device 20, the amount of deviation to be corrected also varies depending on the vertical position of each divided image. It is not necessarily sufficient to target only the top or bottom of each divided image as in the embodiment.

<Third Embodiment> Therefore, a precise correction method when using a picture tube as the video monitor 35 and the display device 20 as described above will be described below. Note that in the case of this method, either the method of the first embodiment or the second embodiment may be used for initial setting.

FIG. 11 is a leap diagram for explaining the third embodiment of the present invention, and shows the display on the screen of the video monitor 35 used for correction during shooting in the third embodiment. .

Such a display is performed by the reference mark generation circuit 31a shown in FIG.
, 31b can be obtained by switching the switching circuits 321 of 31b according to a predetermined procedure and timing. As shown in Fig. 1I, in addition to the fiducial marks Mao and Mbo fixed at the top and bottom of the screen, the cursor Ka has fiducial marks Mao and Mbo that can be moved in the vertical direction of the screen. , Kb are added.

Here, when shooting, in the image of the center of the subject,
The cursors Ka and Kb on each divided image are moved to the most important vertical position in compositing the images. Next, the optical system of the video camera 30 is adjusted to align the common portion of the subject with the respective reference marks Mao and Mbo of the cursors Ka and Kb at that position, thereby completing the correction at the time of photographing.

<Application Example> In the case of the first to third embodiments described above, the optical system of the video camera 30 was adjusted as follows.

First, in the case of a video camera 5 having a single objective lens 6 as shown in FIG. A plane mirror is placed in the optical path after the splitting, and by changing the angle of this plane mirror, the vertical and horizontal positions of the divided images can be moved independently.

In addition, as shown in FIG. 16, in the second adjustment, when the -0 video cameras 15a and 15b are provided independently, the vertical and horizontal positions of the divided images can be adjusted by adjusting the arrangement of each video camera. It means moving.

Apart from these, the video signal output from the video camera 30 may be adjusted electrically, or the video signal output from the video camera 30 may be adjusted electrically.
By electrically adjusting 0 itself, necessary initial settings and corrections at the time of photographing can be performed. For example, by changing the horizontal synchronizing pulse positions of the video signals of the divided images, the horizontal position of the divided υ1 image can be freely shifted. In this case, by superimposing the video signal of the reference mark on the video signal of the divided image in advance and then changing the position of the horizontal synchronizing pulse, this reference mark will move together with the divided image. , can play exactly the same role as the optical mark of the first embodiment. Further, correction at the time of photographing can also be performed by adjusting the amplitude of the horizontal scanning sawtooth wave of the image pickup tube of the video camera 30.

Further, in each of the embodiments described above, when an image is monitored on a video monitor during photographing, the divided images are switched by the image changeover switch 33 shown in FIG. However, with this method, it is not possible to view the image of the center part (composite part) of the subject at a glance on the same screen. Therefore, by switching the video signals of each divided image on the same screen and adjusting the synchronization between each divided image, approximately half of the image (Sa') of each divided image can be obtained as shown in FIG.

sb') can be combined at the image division/composition boundary (Ce) and the image of the center of the subject can be displayed on one screen. By doing this, it is possible to see the state when the divided images are actually combined. It is possible to perform the initial settings using such a video monitor display method.

However, this method cannot be used for the purpose of correction during photographing. The reason for this is that while the actual compositing of divided images is performed at the left and right edges of the video projector screen, in the above method, the compositing of images is performed approximately at the center of the video monitor screen. This is because the degree of expansion and contraction of the image depending on the brightness of the image differs in each case.

In the above embodiment, an example in which one image of a subject is divided into two parts has been described, but the present invention is not limited to this, and the image may be divided into three or more parts and then combined.

[Effects of the Invention] As described above, according to the present invention, images can be divided and combined very easily and accurately, and furthermore, the system can be standardized as an image division and combination method. There is.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an apparatus for realizing the first embodiment of the present invention, Fig. 2 is an explanatory diagram of an optical mark used in the same embodiment, and Fig. 3 is a photograph taken together with the optical mark in the same embodiment. The fourth part is a block diagram showing the reference mark generation circuit and the video signal switching circuit of the device implementing the same embodiment. The fifth part is an explanatory diagram of the video signal of the reference mark in the same embodiment. The sixth part is an explanatory diagram of the image. 7 and 7 are explanatory diagrams of images related to reference marks obtained in the same embodiment, FIG. 8 is a diagram for explaining the adjustment method of the display device in the same embodiment, and FIG. 9 and FIG. An explanatory diagram of the second embodiment of
Fig. 11 is an explanatory diagram of a third embodiment of the present invention, Fig. 12 is a detailed explanatory diagram of the present invention, Fig. 13 is a block diagram showing a conventional device, and Fig. 14 shows an optical system of a video camera. 15 is an explanatory diagram showing an image taken by the video camera, FIG. 16 is a diagram showing another optical system of the video camera, FIG. 17 is a diagram showing a display device, and FIG. 18 is a diagram showing the configuration of the video camera. FIG. 2 is a diagram for explaining display characteristics of a picture tube. IA, IB...Photographing and recording device, 2A, 2B River playback display device, 4a, 4b...Video recorder, 5゜15a
, 15b... Video camera, 2o... Display device, 21a, 21b... Video player, 31a,
31b...Reference mark generation circuit, 32a, 32b...
・Video signal switching circuit, 33... image switching switch,
35...Video monitor. Figure 1 H Eye Figure 9 1 \ Ma (, M Shame Figure 10 Whistle! 3 Figure Figure 14 (a) (b) Shin 16 Figure A, b A () Figure 17 Figure 18

Claims (1)

[Claims] (1) The subject is divided into multiple images and photographed, a video signal is obtained for each divided image, and the multiple divided images obtained as each video signal are played back and displayed again and combined into one image. In the image division/synthesis method, a reference mark serving as the image division/synthesis boundary is inserted into each of a plurality of divided images as a video signal, and the photographing device and display device are adjusted in advance based on the reference mark to perform the image division/synthesis.
An image division and composition method characterized by performing composition.