Global property difference-based CCD array video positioning method and system

A technology with different characteristics and video positioning, which is applied in the parts of TV systems, stereo systems, TVs, 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.

Inactive Publication Date: 2010-07-14
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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  • Global property difference-based CCD array video positioning method and system
  • Global property difference-based CCD array video positioning method and system
  • Global property difference-based CCD array video positioning method and system

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0027] In the present invention, the CCD arrays installed on the flat plate at fixed intervals have the same focal length and viewing angle of each color area array CCD, and can divide the entire viewing field into rhombic viewing field areas with the same shape and projected area in the coordinate plane. The analog signal output by each CCD is amplified and denoised by the video signal amplification and filtering module, and then sent to the video signal analog-to-digital conversion module to be converted into a digital signal in YUV format, and then the FPGA processing module processes each In the YUV digital signal of the area array CCD, the Y, U, and V components are added by pixels to obtain their respective overall feature vectors, and then the global feature vector of the entire array is averaged, and the global feature vector of each CCD is compared with th...

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Abstract

The invention discloses a global property difference-based CCD array video positioning method and a system for CCD arrays arranged on a surface plate at fixed intervals. The method comprises the following steps: amplifying and de-noising an analog signal output by each CCD through a video signal amplification and filter module; sending the amplified and de-noised analog signal to a video signal analog-to-digital conversion module, and converting the amplified and de-noised analog signal into a digital signal of YUV format; then adding Y, U and V components in the YUV digital signal of each area array CCD by using an FPGA processing module according to pixels to acquire respective integral characteristic vector respectively; averaging the global property vectors of the whole array; comparing the global property vector of each CCD with the averaged global property vector of the array to judge whether a target appears in a video image of each CCD; and finally, calculating a rhombic vision field area in which the target appears through the sequence number of the shot CCDs of the target so as to position the target quickly.

Description

technical field [0001] The invention relates to a video positioning technology, especially a method for quickly determining and tracking the position of a target using a CCD 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 a target is approaching CCD 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 are al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00H04N13/02H04N5/14G06T7/00
Inventor 顾宏斌吴东苏周来
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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