JPH07274214A - Stereoscopic video camera - Google Patents

Abstract

PURPOSE:To select a two-dimension image pickup mode or a three-dimension image pickup mode automatically in interlocking with the mount/withdrawal of an optical adaptor by providing a detection means detecting the mount/ withdrawal of the optical adaptor and a changeover means selecting the operating mode of a signal processing circuit based on the output of the detection means to the video camera. CONSTITUTION:In the stereoscopic video camera capable of picking up an image in any of the two-dimension image pickup mode or the three-dimension image pickup mode, while an optical adaptor 7 is withdrawn, since a detection switch 10 is open and a CPU (not shown) receives a low level output, the two- dimension image pickup mode is set. A two-dimension image is picked up in the image pickup area of a CCD in this mode. Furthermore, when the optical adaptor 7 is mounted onto a stereoscopic video camera main body 8, the detection switch 10 is closed, a high level output is given to the CPU and the three- dimension image pickup mode is set. The image pickup area is divided to the left and right in this mode, the right eye image and the left eye image are picked up in each division image pickup area while being compressed into 1/2 in the horizontal direction respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic video camera capable of shooting in either a two-dimensional shooting mode or a three-dimensional shooting mode.

[0002]

2. Description of the Related Art Conventionally, as a stereoscopic image pickup apparatus for taking a stereoscopic image having left and right parallax with one image pickup element, for example,
There is one disclosed in JP-A-57-62686.

According to this publication, a rotating mirror for alternately guiding left and right information to one image pickup device in a field cycle is required, and there is a drawback that the structure becomes complicated. Further, as disclosed in Japanese Patent Laid-Open No. 58-84589, a half mirror and a field cycle are used to open and close without using a rotating mirror.
There is a method of using individual shutters.

However, although this method does not require a complicated structure, it has a drawback that the amount of light is reduced by half by using a half mirror. As a stereoscopic video camera that solves these drawbacks, the applicant of the present application has previously filed Japanese Patent Application No. 5-1
Proposed as No. 59585. According to this application
1/2 the information for the right eye and the information for the left eye in the horizontal direction
An image is captured by using an optical system, for example, an anamorphic optical system that compresses the image to form images in different regions on the left and right on one image sensor, and records the image output. And when playing,
The reproduction output can be doubled in the horizontal direction to obtain a right-eye video signal and a left-eye video signal.

A so-called adapter type stereoscopic video camera which enables the two-dimensional photographing mode and the three-dimensional photographing mode by detachably using the above anamorphic optical system as an optical adapter and being detachably used in a video camera having a single image pickup device is provided. It will be possible.

[0006]

[Problems to be Solved by the Invention] However, in the past,
In the adapter type stereoscopic video camera, the signal processing method of the video signal processing circuit and the display circuit of the viewfinder needs to be changed between the two-dimensional shooting mode and the three-dimensional shooting mode, which is a drawback that the operation is troublesome. .

The present invention solves the above drawbacks,
The present invention provides a stereoscopic video camera in which a shooting mode is automatically switched in association with attachment / detachment of an optical adapter.

[0008]

SUMMARY OF THE INVENTION The present invention is a stereoscopic video camera capable of shooting a stereoscopic image having a parallax with a single image pickup device by mounting the optical adapter on a main body, and the optical adapter is attached and detached. Detection means for detecting,
Switching means for switching the operation mode of the signal processing circuit according to the output of the detection means is provided.

[0009]

When the optical adapter is separated from the main body of the stereoscopic video camera by the above means, the detecting means detects the separation and the video signal processing circuit and the display circuit of the viewfinder operate in the two-dimensional photographing mode. When the optical adapter is attached to the stereoscopic video camera body, the detection means detects the attachment and the video signal processing circuit and the display circuit of the viewfinder operate in the three-dimensional photographing mode.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an optical adapter used in the stereoscopic video camera in this embodiment. Reference numerals 1 and 2 are first and second anamorphic lenses to which right eye information and left eye information having parallax from the subject are irradiated, and 3 and 4 are first and second mirrors arranged behind the anamorphic lenses. Reference numerals 5 and 6 are third and fourth mirrors that reflect the light reflected by the first and second mirrors in the same direction, and these constitute an optical adapter 7.

This anamorphic lens is a lens which produces an image having different magnifications in the vertical and horizontal directions on the image plane, and in the present embodiment, an image in which the horizontal direction is compressed by half is produced.

Note that the first to fourth mirrors may be anamorphic mirrors instead of using anamorphic lenses in the above optical system. Reference numeral 8 denotes a video camera body to which the optical adapter 7 can be attached / detached, and includes an imaging lens 9 formed by combining a plurality of lenses and a detection switch 10 for detecting attachment / detachment of the optical adapter 7.

Next, a block diagram of the stereoscopic video camera of this embodiment is shown in FIG. 11 is a CCD, 12 is this CCD
A video signal processing circuit that receives an output and processes various video signals, including an AF (auto focus) circuit, an AE (auto iris) circuit, and an AWB (auto white balance) circuit. Generates control output, AE control output and AWB control output. 1
3 is a recording circuit for recording the output of the video signal processing circuit in the VTR section 14, 15 is an expansion circuit for expanding the output of the video signal processing circuit 12 by 2 in the horizontal direction, and 16 is the output of the expansion circuit or the video. A selection circuit for selecting and outputting the output of the signal processing circuit, and 17 is a viewfinder to which the video signal selected by this selection circuit is supplied.
It is composed of a well-known 3D display of the parallax barrier system. A CPU 18 controls the selection circuit 16 while switching each detection area in the AF circuit, AE circuit, and AWB circuit of the video signal processing circuit 12 based on the detection output from the detection switch 10.

Next, the operation of the circuit of this embodiment will be described. First, when the optical adapter 7 is detached, the detection switch 10 is off and the CPU 18 is "L".
Since the output is input, the two-dimensional photographing mode is set. In this mode, a two-dimensional image is picked up in the image pickup area (solid line) of the CCD 11 as shown in FIG. 3a. The detection areas of the AF circuit, the AE circuit, and the AWB circuit of the video signal processing circuit 12 are set so as to be located at the center of the imaging area as indicated by the broken line. Further, the two-dimensional video signal processed by the video signal processing circuit 12 is supplied to the recording circuit 13 and is selected by the selection circuit 16 to be selected by the viewfinder 17.
And the two-dimensional image is displayed.

On the other hand, when the optical adapter 7 is attached to the stereoscopic video camera body 8, the detection switch 10 is turned on and the "H" output is input to the CPU 18, so that the three-dimensional imaging mode is set. . In this mode, the imaging area is divided into left and right as shown in FIG. 3B, and the right-eye image and the left-eye image are respectively compressed in the horizontal direction by 1/2 and imaged in each divided imaging area. Also, the AF
The setting is changed so that each detection area of the circuit, the AE circuit, and the AWB circuit is located at the center of each divided imaging area as shown by the broken line. Further, the selection circuit 16 selects the output of the expansion circuit 15 and supplies it to the viewfinder 17. The decompression circuit 15 decompresses the input video signal in the horizontal direction to synchronize the left and right video signals with each other, and then interleaves the left and right video signals in the horizontal direction for each pixel and outputs the interleaved signals. Therefore,
A stereoscopic image is displayed on the viewfinder 17 and stereoscopic viewing is possible without glasses.

[0016]

As described above, according to the present invention, the photographing mode is automatically switched in association with the attachment / detachment of the optical adapter. Therefore, in the two-dimensional photographing mode and the three-dimensional photographing mode, the video signal processing circuit and the view are processed. There is no need to manually switch the signal processing method of the display circuit of the finder.

Further, since the detection areas of the AF circuit, the AE circuit and the AWB circuit are switched between the two-dimensional photographing mode and the three-dimensional photographing mode, each circuit can operate optimally according to each photographing mode.

[Brief description of drawings]

FIG. 1 is a diagram showing attachment / detachment of an optical adapter according to an embodiment of the present invention.

FIG. 2 is a block diagram of a stereoscopic video camera according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a detection area in each shooting mode according to the present exemplary embodiment.

[Explanation of symbols]

 7 Optical Adapter 8 Stereo Video Camera Main Body 10 Detection Switch 11 CCD 12 Video Signal Processing Circuit 15 Expansion Circuit 18 CPU

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Okada 2-5-5 Keihan Hon-dori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Takashi Ikeda 2-chome Keihan-hondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A stereoscopic video camera capable of shooting a stereoscopic image having a parallax with a single image pickup device by mounting the optical adapter on a main body, and detecting means for detecting attachment / detachment of the optical adapter, and the detection means. Switching means for switching the operation mode of the signal processing circuit according to the output of the means, when the optical adapter is detached from the main body, the signal processing circuit operates in the two-dimensional photographing mode, and the optical adapter is connected to the main body. When installed, the signal processing circuit is 3
A stereoscopic video camera that operates in the 3D shooting mode. 2. The stereoscopic video according to claim 1, wherein the signal processing circuit includes an auto focus circuit, an auto iris circuit, and / or an auto white balance circuit, and the detection area of each of these circuits is changed depending on a photographing mode. camera.