JPH03151794A - Stereoscopic television pickup system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an imaging method for capturing stereoscopic images using a television camera or the like.

(Prior art) As a conventional technology, for example, Japanese Patent Application Laid-Open No. 51-142218
A stereoscopic television imaging device as shown in the above publication is known.

In such an imaging device that obtains a stereoscopic image using two television cameras, when the subject distance changes, the following operations must be performed.

1. Adjust the zoom, focus, etc. of the standard camera lens among the two cameras, and then adjust the zoom, focus, etc. of the other camera lens.

2. Then, manually change the parallax angle of the two television cameras so that the images of the two television cameras overlap accurately (so that they capture the same subject).

(Problem to be Solved by the Invention) The above-mentioned conventional technology involves manually adjusting the zoom, focus, parallax angle, etc. of two television cameras while looking at a reference monitor screen, etc. It was necessary to match the target.

In the present invention, the zoom and focus of the lens of one television camera are automatically adjusted based on the zoom and focus of the lens of the other television camera, which is used as a reference, without performing any manual operation to adjust the images. Furthermore, when the subject distance changes, the parallax angles of the two television cameras are changed to follow this change, and the images are automatically aligned.

(Means for Solving the Problems) In order to achieve the above object, the present invention is a means for detecting information such as a focus value and a zoom value of a zoom lens when an object is imaged by one of the reference television cameras. and means for calculating a parallax angle value for imaging the same subject with the two television cameras based on the detection information;
At this time, the stereoscopic television imaging system constituted by a means for controlling the parallax angle of the two television cameras using the calculated value and the detected information such as the focus value and zoom value of the zoom lens of one of the television cameras are used to control the parallax angle of the other television camera. The focus value that should be set for the zoom lens of the TV camera,
This is a stereoscopic television imaging system comprising means for calculating a zoom value, etc., and means for controlling the focus value, zoom value, etc. of the zoom lens of the other television camera using the calculated values.

(Function) As a result, by simply pointing one TV camera at the subject, adjusting the lens focus, etc., and taking an image, the lens focus, etc. of the other TV camera and the parallax angle of the two TV cameras are automatically set, and the two TV cameras are automatically set. It is possible to obtain a three-dimensional image that perfectly matches the images from the TV camera on the stand.

(Example) An embodiment of the system of the present invention will be described with reference to FIG.

First, one television camera 2 serving as a reference is directed toward the subject 9, the zoom value of the zoom lens 1 is determined, and the focus is adjusted (automatically in the case of autofocus). Then, the zoom value, focus value, etc. of the zoom lens 1 at this time are detected by the detection device 7, and these detected information are sent to the microcomputer 8.

The microcomputer 8 calculates the zoom value, focus value, etc. to be set for the zoom lens 3 of the television camera 4 from this detection information, and also calculates the distance to the subject 9, and uses this value and the previously measured 2 Reference point P2 of the television cameras 2 and 4. From the interval between P4, the stereoscopic parallax angle θ of the two TV cameras 2 and 4 at this time is
1 and the reference point P2 of the television cameras 2 and 4. The angle θ2 between the line segment connecting P4 and the optical axis of each camera is calculated. (
Note that a calculation formula is set in the microcomputer 8 so that an optimal calculation value can be obtained for the detected information, taking into consideration the difference in characteristics between the two television cameras. )and,
These calculated values are sent to the lens drive unit 6 and the parallax angle adjuster 5, and the zoom value of the zoom lens 3 of the television camera 4,
At the same time that the focus value etc. are adjusted to each value of the zoom lens 1 of the TV camera 2, the parallax angle adjuster 5 adjusts the TV camera so that the stereoscopic parallax angles of the two TV cameras 2.4 match the calculated values. 2, the reference point P2.2 of the television cameras 2, 4. The angle θ2 between the line segment connecting P4 and each camera optical axis is adjusted.

As described above, by simply pointing one television camera toward a subject and capturing an image, the lens focus, etc. of the other television camera and the parallax angle of the two television cameras are automatically set.

(Effects of the Invention) According to the present invention, it is possible to eliminate the need to manually adjust the values and parallax angles of the lens optical systems of two television cameras to obtain a three-dimensional image, and the operability is improved. A three-dimensional television imaging system can be realized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1.3: Zoom lens, 2. 4: TV camera. 5: Parallax angle adjuster, 6: Lens drive section, 7: Detection device, 8: Microcomputer, 9: Subject.

Claims (1)

[Claims] In a method of capturing a three-dimensional image using one or two television cameras, when an object is imaged by one of the reference television cameras, information such as the focus value and zoom value of the zoom lens is provided. means for detecting, based on the detection information, a parallax angle value for imaging the same subject with the two television cameras; A stereoscopic television imaging system including means for controlling. 2. In the stereoscopic television imaging system according to claim 1, the focus value to be set on the zoom lens of the other television camera at this time based on detection information such as the focus value and zoom value of the zoom lens of the one television camera. A stereoscopic television imaging system comprising means for calculating a value, zoom value, etc., and means for controlling a focus value, zoom value, etc. of a zoom lens of the other television camera at this time using the calculated values.