Camera shooting type multi-target locating method and device based on image rectification

A multi-target positioning and image correction technology, applied in image communication, color TV parts, TV system parts and other directions, can solve the problems of poor portability, weak robustness, complex positioning system structure, etc. Low cost, simple structure and high precision

Active Publication Date: 2014-05-14
JILIN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a camera-based multi-target positioning method and device based on image correction to solve the problems of complex structure, poor portability, and weak robustness of the current vision-based positioning system

Method used

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  • Camera shooting type multi-target locating method and device based on image rectification
  • Camera shooting type multi-target locating method and device based on image rectification
  • Camera shooting type multi-target locating method and device based on image rectification

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Embodiment approach

[0044] An embodiment of the present invention is: the control circuit board completes the configuration of the infrared camera, the infrared camera only collects a few lines of image data in the infrared light reflection area, and transmits the image data to the main controller for processing in the form of USB data .

[0045] A camera type multi-target positioning method based on image correction, characterized in that it comprises the following steps:

[0046] 1) Four infrared cameras installed at the top corners of the screen collect image information on the screen surface, and the control circuit board transmits the collected image data to the main controller through USB;

[0047] 2) For an infrared camera, its imaging area greater than 90 degrees, because there is no reflective strip to reflect infrared light, the imaging is a shadow area, and one end of it is taken as the imaging start end, starting from P 1 position to start imaging, according to P 1 The distance d to...

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Abstract

The invention relates to a camera shooting type multi-target locating method and device based on image rectification and belongs to multi-target locating methods and devices. The camera shooting type multi-target locating device comprises a locating platform, a control circuit board and a master controller. Cameras obtain target information on the surfaces of screens, the primary optical axis of each camera is automatically determined according to the imaging starting position of the camera, and then the imaging positions of targets in the cameras are extracted. The imaging positions are corrected through the distortion correction method based on equivalent faces. The cameras are grouped, and multi-target locating is achieved through the optical intersection measuring locating algorithm. The camera shooting type multi-target locating method and device based on image rectification has the advantages that the structure of the device is simple, reliability is high, lens distortion does not need complicated calibration and correction, extension is easy, and the locating precision is high.

Description

technical field [0001] The invention relates to a multi-target positioning device and method, in particular to a system and method for realizing multi-target positioning based on camera optical imaging and optical intersection positioning principles. Background technique [0002] Visual positioning technology is based on modern optical technology, using camera to collect images, through the analysis of image data, using digital image processing technology, extracting the position information of the target from the image data, combined with related algorithms, to achieve the coordinate positioning of the target a comprehensive technology. Apply visual positioning technology to touch screens, especially large-screen touch screens, transform the touch technology that used to rely on hardware materials and equipment into touch technology with emerging digital image processing technology as the core, and use software technology to solve hardware materials and equipment. It has t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/91
Inventor 孙晓颖吴赛文王庆龙周春雨董杨瑞王婷婷
Owner JILIN UNIV
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