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Non-visual geometric camera array video positioning method and system

A video positioning and camera technology, applied in the radio wave measurement system, image analysis, image data processing, etc., can solve problems such as errors and large three-dimensional information, and achieve the effects of high real-time performance, simple calculation, and enhanced detection sensitivity

Active Publication Date: 2010-07-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The system needs to achieve a strict correspondence between the TOF camera and each high-resolution camera in the common space covered. Once there is a slight error in the registration information, the calculated 3D information will have a large error

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  • Non-visual geometric camera array video positioning method and system
  • Non-visual geometric camera array video positioning method and system
  • Non-visual geometric camera array video positioning method and system

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0029] In the present invention, the camera array installed on the plane board at fixed intervals has the same focal length and field angle of each camera, and can divide the entire field of view into diamond-shaped field of view areas with the same shape and projected area in the coordinate plane. The analog video signal of each camera is transformed into a digital video signal through a video capture card inserted in the expansion slot of the computer. The computer analyzes the digital video information of each channel, and judges whether the target appears in the video images of each channel. Then, the diamond-shaped field of view area in which the target appears can be calculated through the serial numbers of the cameras that have captured the target, so as to quickly locate the target.

[0030] Such as figure 1 Arrange n×m cameras in the ZX plane, and use t...

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Abstract

The invention discloses non-visual geometric camera array video positioning method and system. The non-visual geometric camera array video positioning system is arranged on a camera array on a plane board at fixed distance, the focus and visual field angles of all cameras are same, and the whole visual field can be divided into diamond-shaped visual field zones with same shape and shape projection area in the coordinate plane. An analog video signal of each camera is converted into a digital video signal by a video collecting card which is inserted in a computer extension slot. A computer can analyze the digital video information of each path to judge whether the target appears in each video image or not, and can calculate which diamond-shaped visual field zone the target appears in through the serial number of the cameras shooting up the target, and then the target can be quickly positioned.

Description

technical field [0001] The invention relates to a video positioning technology, especially a method for quickly determining and tracking the target position using a camera array, which can be used in various occasions that require fast three-dimensional measurement and positioning, and can also be used for alert detection to detect whether there is a target approaching camera array. Background technique [0002] Video positioning is a non-contact target positioning method. Compared with traditional electromagnetic and ultrasonic positioning equipment, video positioning equipment has a simple structure and is not easily affected by external interference. It has a wide range of applications in the fields of virtual reality systems, automated production lines, and robot navigation. application. At present, video positioning mainly adopts three-dimensional information acquisition methods and devices based on single camera, dual camera and multi-camera systems. Existing methods...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/36G06T7/00
Inventor 顾宏斌吴东苏孙瑾
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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