JPS6018067A - Composite picture generator - Google Patents

Abstract

PURPOSE:To attain suitably picture synthesizing by recording the control information on a camera in an outdoor shoot mode in response to the recorded pictures and driving with control a studio camera by the recording information when the pictures obtained from the outdoor shoot are synthesized with the studio pictue. CONSTITUTION:In a location modd a screen A photographed by a camera 1 is fed to a video tape recorder 2 together with the picture information, i.e., the control information the panning, tilting, zooming, etc. of the camera 1 related to the movement of the screen A. A screen B obtained in a studio is synthesized with the recorded screen A through a studio camera 11. Im this case, both the picture signal and the control information are produced by the recorder 2. Then the camera 11 is driven by the control information. Thus it is possible to obtain the synchronizatin between a motion picture and the movement of a studio picture in a location mode.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a composite image generation device suitable for use in chromakey composition of a studio image and an on-location image.

(Prior Art) Conventionally, as a method of combining a location image and a studio image and giving "movement" to both images at the same time, methods such as reduced chroma keying, which controls the location image using the movement of a studio camera, have been used. Measures have been taken.

Such chroma key composition requires a device to reduce or enlarge the screen6.Moreover, when enlarged, the pixels become coarse, so it has the disadvantage that it can only be enlarged to about twice the size of both images in combination 1. Furthermore, it was not possible to impart simultaneous "movement" in the lateral and longitudinal directions.

(Objective) Therefore, the object of the present invention is to eliminate the above-mentioned conventional drawbacks,
When shooting outdoors, separately from the images to be recorded, control information such as pan, tilt, zoom, focus, etc. of the camera to be recorded outdoors is recorded in correspondence with the images to be recorded. When combining an image and a studio image, the studio camera is controlled and driven using the recorded camera control information, resulting in a composite image that appropriately combines images with "movement". The objective is to provide a generator.

(Structure of the Invention) In other words, the composite image generating device of the present invention includes a recording means for recording an image signal to be recorded in association with control information representing the image state of the image signal, and an apparatus for associating the image signal with the control information. a camera for images to be synthesized, comprising a reproduction means for reproducing the images, and a driving section controlled by the reproduced control information;
Supplying the reproduced control information to the camera for the composite image,
A camera control means for controlling the imaging state of the camera for images to be combined so as to follow the image state of the image signal, a reproduced image signal, and a camera for images to be combined that follows the reproduced image signal. The present invention is characterized by comprising an image synthesizing means for generating a synthesized image by synthesizing the image pickup outputs from the above.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the location time.

Here, the screen A photographed by the composite image camera 1 is recorded on a recording medium in a video tape recorder 2 or the like. Corresponding to this recording, control information such as pan, tilt, zoom, focus, or pedestal dolly of the camera 1 related to the image state at that time, that is, the movement of the screen, is recorded simultaneously with the thumbtack, that is, in real time. Record on tape recorder 2. For example, in the panning and tilting states, the respective angles in the horizontal and vertical directions are detected by the angle detection device 3, and then converted into digital values by the conversion circuit 4. The position of the zoom and focus state is detected by a yometer 5, and the detection signal at 7 is converted into a digital value by a conversion circuit 4. Each of these digital information is separately recorded in a trunk other than the image signal of the video cheap recorder 2 corresponding to the image signal to be recorded.

In this way, in the present invention, an image signal and control information representing the image state of the image signal are recorded in accordance with the time. That is, when recording an image signal and control information on the same video tape, they are recorded in spatial correspondence on the tape. Alternatively, when the image signal and the control information are recorded in correspondence on separate video tapes, recording and reproduction are performed synchronously on both video tapes.

FIG. 2 shows an example in which a screen B in the studio and a recorded screen A are synthesized by a camera for images to be synthesized, for example, the studio camera 11 in the studio. Now, the second
In the figure, it is assumed that a person in front of the blue panel 10 is photographed by the camera 11 and the screen B is 11).

Screen A, which has already been recorded using the system shown in FIG. 1, can be obtained by playing back the video tape recorder 2. At this time, the video tape recorder 2 reproduces the image (g) in association with the control information. In other words, the image signal and the control information are reproduced in correspondence with each other at the same time depending on the screen, or as necessary. Accordingly, the control information may be played back in association with the image signal by slightly advancing or delaying the image signal.

In addition to the movement of the image described above, the image state of the image captured by the composite image camera l can also include the tone of the picture. In this case, the control information representing the image state of the image signal includes the iris of the camera, R, G,
It is possible to select each gain of H and each pedestal of R2O and B and use them to match the tone of the composite screen.

Image A that has been correlated and played back as described above. 1 and the control information, the control information is the decoder 12 and the control circuit 1.
3 and then the camera 11 for the composite image! ! 14 Moving parts are transferred. In the case of control information such as pan, tilt, zoom, focus, and pedestal dolly, the drive unit of the camera 11 for the composite image is controlled by the angle control unit 14 shown in the second figure and the position 11) λOr;l( If the control information is for the camera's iris, master pedestal, R, G, H gains, and R, G, B pedestals, it is included in the camera 11; The electrical control part shall be

Here, the control circuit 13 performs necessary conversion in order to supply the reproduced control information to the camera 11 for composite images, for example, a magnification conversion circuit that corrects the distance between the subject and the camera. can be used.

By configuring as described below, in the present invention, the screen A
At the same time as the "movement" of the image signal is reproduced, each "movement" information of the screen A obtained from the camera 1 is reproduced, and the control information representing the image state of the image signal is transmitted through the decoder 12 and the control circuit 13 described above. is transmitted to the camera 11, so that the camera 11 can capture the screen B that follows the "movement" of the screen A.
can be imaged by

This screen B is supplied to a line chromakey device (encoded chromakey) 16, where it is combined with screen A, thereby obtaining screen C, which is a combination of both screens A and B.

It goes without saying that the mode of pursuing the reproduced image signal is not limited to the upper cases 1 and 1.

In addition to chromakey, the present invention can also be effectively applied to various special effects such as super, soft chromakey, and wipe.

Furthermore, an apparatus for recording an image signal to be recorded and control information representing the image state of the image signal in correspondence with each other is as follows.
It goes without saying that the present invention is not limited to the video tape recorder, and that various types of recorders can also be used.

(Effects) As is clear from the above description, according to the present invention, it is possible to synchronize an image with a sense of "no" on location with the movement of a studio image, thereby creating a natural-looking image. A dynamic composite image can be created.

If screen A is a fixed shot and only screen B moves, it is possible to synthesize it using a conventional chromakey device, but the same is true for a double shot of screens A and B! When giving "movement" to F, the device of the present invention is extremely effective.

[Brief explanation of drawings]

FIGS. 1 and 2 are diagrams showing an example of the configuration of the composite image generating apparatus of the present invention, divided into location and studio composition, respectively. DESCRIPTION OF SYMBOLS 1... Camera for composite image, 2... Video chip recorder, 3... Angle detector, 4... Conversion circuit, 5... Potentiometer make, 10... Blue panel, 11...・Studio camera. 12... Decoder, 13... Control circuit, 14... Angle control section, 15... Position control section, 18... Line chromakey HM (encoded chroma key), A... Location screen, B. ... Studio screen, C... Composite screen. Patent applicant Japan Broadcasting Corporation

Claims (1)

[Claims] 1) Recording means for associating and recording an image signal to be recorded and control information representing an image state of the image signal; and reproducing the image signal and the control information in association with each other. a camera for composite images, comprising a reproduction means for reproducing the composite images, and a drive unit controlled by the reproduced control information; camera control means for controlling the imaging state of the image signal to follow the image state of the image signal; a reproduced image signal and an imaging output from the camera for the composite image that follows the reproduced image signal; A composite image generation device comprising: an image composition means for generating a composite image by combining the images. 2) The image signal is generated by a composite image camera, and the composite image at the time of imaging is generated by a composite image camera. A composite image generating device according to claim 1, characterized in that the control information is at least panning and tilting of a camera for use in a composite image. 3) Generating the image signal by a camera for composite images 1-1
2. The composite image generating device according to claim 1, wherein the control information includes pan, tilt, zoom, focus, and pedestal dolly of the composite image camera at the time of capturing the composite image. 4) +iii image symbol image signal generated by the image camera, R, G, B of the composite image camera at the time of imaging
4. The composite image generating device according to claim 1, wherein the control information includes gain, R, . . . , G, B pedestal, iris, and master pedestal. 5) The camera control means according to any one of claims 1 to 4, wherein the camera control means includes a magnification conversion circuit that performs magnification conversion of the control information in accordance with the image for the image signal. The composite image generator described in Section 1.