JP2897227B2 - Imaging device and playback device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an imaging device and a playback device.

[Conventional technology]

In recent years, in the production of television programs, video software, movies, and the like, image synthesizing methods such as chroma keys and video mats have been actively used. In each of these methods, one image is extracted by extracting a part of the foreground image and combining the extracted image with the background image. But,
When such image synthesis is performed, the following inconvenience may occur. That is, the distance between the foreground and the background becomes unnatural, and the background becomes unnatural with respect to the movement of the foreground.

For this reason, there has been proposed an improvement method of performing defocus processing of the background using lens data at the time of shooting, or linking the background using pan / tilt data.

[Problems to be solved by the invention]

However, the above improvement method can be used only when it is possible to know lens data and pan / tilt data (hereinafter collectively referred to as photographing data). Image sources for image synthesis include video cameras,
There is an image recording / reproducing device such as a video tape recorder (so-called VTR). However, the conventional image recording / reproducing device does not have a recording / reproducing function of lens data or pan / tilt data. It is difficult to use the above-mentioned improvement method in image synthesis in the case of using.

An object of the present invention is to provide an imaging device and a reproducing device that solve such a problem.

[Means for solving the problem]

An image pickup apparatus according to the present invention reproduces an image signal from a recording medium in which at least one of focal length information, aperture information, and subject distance information of a photographing lens is recorded in association with an image signal, and reproduces the image signal from the recording medium. Separating means for separating an image signal and at least one of focal length information, aperture information, and subject distance information of the photographic lens from the separated signal; focal length information of the photographic lens separated by the separating means; A reproduction device having processing means for performing defocus processing or motion interlock processing for combining the image signal separated by the separation means with another image based on at least one of the information and the subject distance information; An imaging device used in combination, comprising: imaging means for converting an optical image into an electric image signal; and a photographing lens provided on a front surface of the imaging means. When at least one of the focal length information of the photographing lens, aperture information and distance information
Recording means for recording the information on a recording medium in association with the image signal obtained from the imaging means.

The imaging device according to the present invention also includes a pan direction of the imaging device,
An image signal is reproduced from a recording medium in which at least one of the pan speed, the tilt direction, and the tilt speed is recorded in association with the image signal, and the image signal is reproduced from the signal reproduced from the recording medium and the pan direction of the imaging device. Separating means for separating at least one of the pan speed, the tilt direction and the tilt speed, and at least one of the pan direction, the pan speed, the tilt direction and the tilt speed of the imaging device separated by the separating means. An image pickup apparatus, which is used in combination with a reproduction apparatus having processing means for performing defocus processing or motion interlock processing for synthesizing the image signal separated by the separation means with another image based on the optical signal, To an electric image signal, and at least one of a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging device. It characterized by having a recording means for recording on a recording medium in association with the image signal obtained from the image pickup means.

A reproducing apparatus according to the present invention is a reproducing apparatus that reproduces an image signal from a recording medium on which at least one of focal length information of a photographing lens, aperture information, and subject distance information is recorded in association with an image signal. Separating means for separating an image signal and at least one of focal length information, aperture information, and subject distance information of the taking lens from a signal reproduced from the recording medium; Processing means for performing, based on at least one of the focal length information, aperture information and subject distance information, an image signal separated by the separation means for defocusing or motion interlocking processing for synthesis with another image; It is characterized by having.

The playback device according to the present invention also includes a pan direction of the imaging device,
A playback device that plays back an image signal from a recording medium in which at least one of a pan speed, a tilt direction, and a tilt speed is recorded in association with an image signal. A separating unit that separates at least one of a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging device; and a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging device that are separated by the separation unit. A defocusing process or a motion interlocking process for combining the image signal separated by the separation unit with another image based on at least one of the above.

[Action]

By the above means, the photographing condition at the time of photographing is recorded on the recording medium in association with the photographed image signal, so that the image signal can be corrected with reference to the photographing condition at the time of reproduction. As a result, natural playback processing taking into account shooting conditions,
For example, it becomes possible to easily perform a defocus process, a motion link process, and the like. A more natural synthesized image can be obtained by applying the image synthesis process.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention applied to an analog recording system, FIG. 2 is a format of a video tape as a recording medium, and FIG. 3 is a detailed format of a recording area of photographing data. Show.

First, the recording format will be described with reference to FIG. 2 and FIG. Reference numeral 10 denotes a video tape which is a tape-shaped recording medium, and 12 denotes a recording track thereof. Each recording track 12
Is a video recording area V which is a recording portion of a video signal,
It comprises a recording area L and a video recording area V for photographing data, and a space SP separated from the photographing data recording area L. As shown in FIG. 3, the photographing data recording area L
Synchronization signal section SY for synchronizing with video recording area V
NC, lens data section and pan / tilt data section.Lens data section contains focal length, distance ring position,
Aperture and other data are recorded and pan / tilt /
The data section records a pan direction, a pan speed, a tilt direction, a tilt speed, and other data.

The recording system of FIG. 1 will be described. 20 is an input terminal for a video signal to be recorded, 22 is an input terminal for lens data,
24 is a pan / tilt data input terminal. At the time of recording, the switch 44 is connected to the contact a side. First, switch
40 is connected to the contact a side, the video signal of the input terminal 20 undergoes processing such as pre-emphasis and FM modulation by the image processing circuit 26, and the recording equalizer 36, the switch 40, the recording amplifier 42, the switch 44, and the rotary transformer It is applied to a rotating head 48 via 46 and recorded on the video tape 10. Thus, the video recording area V shown in FIG. 2 is formed.

While the rotary head 48 passes through the space area SP, the switch 40 switches to the contact b side. Lens data from a photographing lens (not shown) is input from an input terminal 22 to a lens data processing circuit 28, and pan / tilt data from a camera platform (not shown) is input from an input terminal 24 to pan / tilt data. The data is input to the tilt / data processing circuit 30, converted into predetermined codes, and combined by the data adding circuit 32 in the order shown in FIG. The synchronization adding circuit 34 adds the synchronization signal section SYNC shown in FIG. 3, and the output is applied to a rotary head 48 via a recording equalizer 38, a switch 40, a recording amplifier 42, a switch 44 and a rotary transformer 46, -Recorded on the tape 10. Thus, a photographing data recording area L is formed.

By switching the switch 40 for each recording track as described above, the video signal and the photographing data can be recorded in association with each other. For the audio signal, a known recording technique can be used. For example, the audio signal may be superimposed on the video signal and recorded in the video recording area V, or may be recorded on a linear track by a fixed head.

Next, the operation at the time of reproduction will be described. Switch 44 during playback
Is connected to the contact b side. The switch 52 is first connected to the contact a, and the recording signal (video signal) of the video recording area V is converted into an electric signal by the rotary head 48, and the rotary transformer 46, the switch 44, the reproduction amplifier 50, the switch 52, and an image processing circuit 60 via a reproduction equalizer 54
Is applied to The image processing circuit 60 performs processing corresponding to the processing in the image processing circuit 26, and a reproduced video signal is obtained at the output terminal 66.

As in the case of recording, the rotary head 48
While passing through the SP, the switch 52 switches to the contact b side, and the signal of the photographing data recording area L is transmitted via the rotary head 48, the rotary transformer 46, the switch 44, the reproduction amplifier 50, the switch 52, and the reproduction equalizer 56. Synchronization separation circuit 58
Is applied to The synchronization separation circuit 58 separates the synchronization signal part SYNC, the lens data processing circuit 62 converts the lens data code into lens data and outputs it to the output terminal 68, and the pan / tilt data processing circuit 64 Converts the pan / tilt data code to pan / tilt data and outputs it
Output to 70.

By performing the above operation for each recording track, it is possible to obtain photographing data that changes momentarily with the video signal simultaneously with the video signal.

FIG. 4 is a block diagram showing the configuration of an embodiment when applied to a digital recording system. First, the recording system will be described. Ten
0 is an input terminal of a video signal to be recorded, 102 is an input terminal of an audio signal, 104 is an input terminal of lens data, 106
Is an input terminal for pan / tilt data. During recording, the switch 126 is connected to the contact a side. The video signal at the input terminal 20 undergoes processing such as A / D conversion and addition of an error correction code in the image processing circuit 108, and is converted into a data string as shown in FIG. 5 (a), for example. The audio signal of the input terminal 102 is subjected to processing such as A / D conversion and addition of an error correction code by an audio processing circuit 110, and a data adding circuit 116 is processed by an image processing circuit 108.
The output of the audio processing circuit 110 is added after the output of (1) to output a data string as shown in FIG. 5 (b). Input terminal
104 lens data and pan / tilt
The data is converted into a predetermined code by a lens data processing circuit 112 and a pan / tilt data processing circuit 114, respectively. The data adding circuit 118 adds the outputs of the processing circuits 112 and 114 to the output of the data adding circuit 116, and outputs a data string as shown in FIG. 5 (c).

The synchronization addition circuit 120 adds a synchronization code SYNC before the output data sequence of the data addition circuit 118 as shown in FIG. 5 (d), and the output thereof is a recording equalizer 122, a recording amplifier 124,
The voltage is applied to the rotary head 130 via the switch 126 and the rotary transformer 128, and is recorded on the video tape 10.

Next, the operation at the time of reproduction will be described. Switch 12 during playback
6 is connected to the contact b side. The recording signal of the video tape 10 is converted into an electric signal by a rotary head 130 and applied to a sync separation circuit 136 via a rotary transformer 128, a switch 126, a reproduction amplifier 132 and a reproduction equalizer 134.
The synchronization separation circuit 136 separates the synchronization code SYNC and applies it to the timing control circuit 138. The timing control circuit 138 controls the operation timing of the circuits 140 to 146 based on this.

The image processing circuit 140 is an image processing circuit 1 for image data.
Performs processing such as error correction and D / A conversion corresponding to the processing in step 08, and outputs an analog video signal to the output terminal 148. The lens data processing circuit 142 and the pan / tilt data processing circuit 144 respectively output coded lens data and pan / tilt data from the output of the sync separation circuit 136.
Receives data and outputs lens data to output terminal 150
Then, the pan / tilt data is output to the output terminal 152.
The audio processing circuit 146 applies the audio processing circuit 110 to the audio data.
Then, processing such as error correction and D / A conversion corresponding to the processing in step (1) is performed, and an analog audio signal is output to the output terminal 154.

In this manner, the photographing data at the time of photographing can be obtained together with the reproduced video signal. When two video signals are combined, defocus processing of the video signal by lens data and pan / tilt data, motion interlocking processing Is easier to do.

In the above embodiment, a video tape is used as a recording medium. However, the present invention is not limited to this.
It does not hinder the use of various types of recording media such as magneto-optical disks.

〔The invention's effect〕

As can be easily understood from the above description, according to the present invention, it is possible to obtain photographing data necessary for image correction in image synthesis, and to obtain a more natural synthesized image in image synthesis processing.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the construction of an embodiment of the present invention, FIG. 2 is a recording format of a video tape shown in FIG. 1, FIG. 3 is a format of photographing data, and FIG. FIG. 5 is an explanatory diagram of a data array in each section of FIG. 20: Video signal input terminal, 22: Lens data input terminal,
24: pan / tilt data input terminal, 28: lens data processing circuit, 30: pan / tilt data processing circuit, 42: recording amplifier, 46: rotary transformer, 48: rotary head, 50:
Reproduction amplifier, 54, 56: Reproduction equalizer 62: Lens data processing circuit, 64: Pan / tilt data processing circuit, 66: Video signal output terminal, 68: Lens data output terminal, 70: Pan / tilt data output Terminal

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-185778 (JP, A) JP-A-1-248766 (JP, A) JP-A-59-91778 (JP, A) JP-A-62 67981 (JP, A) Japanese Utility Model 63-187485 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H04N 5/782 H04N 5/781 H04N 5/225

Claims (4)

(57) [Claims] An image signal is reproduced from a recording medium in which at least one of focal length information, aperture information, and subject distance information of a photographing lens is recorded in association with an image signal.
Separating means for separating an image signal and at least one of focal length information, aperture information, and subject distance information of the taking lens from a signal reproduced from the recording medium; Focal length information,
A playback device that performs a defocusing process or a motion interlocking process on the image signal separated by the separating unit based on at least one of the aperture information and the subject distance information for synthesis with another image. An imaging device used in combination with: an imaging unit that converts an optical image into an electric image signal; an imaging lens provided on a front surface of the imaging unit; focal length information, aperture information, and a subject of the imaging lens A recording unit that records at least one of the distance information on a recording medium in association with an image signal obtained from the imaging unit. 2. An image signal is reproduced from a recording medium in which at least one of a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging apparatus is recorded in association with the image signal, and reproduced from the recording medium. Separating means for separating an image signal from a signal and at least one of a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging device; and a pan direction, a pan speed, and a tilt of the imaging device separated by the separation device. Based on at least one of the direction and the tilt speed, the image signal separated by the separation unit is
An imaging device used in combination with a playback device having a processing unit that performs defocus processing or motion interlocking processing for synthesis with another image, and an imaging unit that converts an optical image into an electrical image signal. A recording unit that records at least one of a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging device on a recording medium in association with an image signal obtained from the imaging unit. 3. A reproducing apparatus for reproducing an image signal from a recording medium in which at least one of focal length information, aperture information, and subject distance information of a photographing lens is recorded in association with the image signal. Separating means for separating an image signal and at least one of focal length information, aperture information and subject distance information of the taking lens from a signal reproduced from the camera, and focal length information of the taking lens separated by the separating means Processing means for performing a defocusing process or a motion interlocking process on the image signal separated by the separating device based on at least one of the aperture information and the subject distance information for synthesis with another image. A reproducing apparatus characterized by the above-mentioned. 4. A reproducing apparatus for reproducing an image signal from a recording medium in which at least one of a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging device is recorded in association with the image signal. Separating means for separating an image signal from a signal reproduced from a medium and at least one of a pan direction, a pan speed, a tilt direction, and a tilt speed of the imaging device; and a pan of the imaging device separated by the separating device. Processing means for performing a defocusing process or a motion interlocking process on the image signal separated by the separating device based on at least one of the direction, the pan speed, the tilt direction, and the tilt speed for synthesis with another image; A playback device comprising: