A camera-type multi-target positioning method and device based on image correction

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

Active Publication Date: 2017-12-12
JILIN UNIV
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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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  • A camera-type multi-target positioning method and device based on image correction
  • A camera-type multi-target positioning method and device based on image correction
  • A camera-type multi-target positioning method and device based on image correction

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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-type multi-target positioning method and device based on image correction, which belongs to the multi-target positioning method and device. Including the positioning platform, the control circuit board and the main controller, the camera obtains the target information on the screen surface, automatically determines the main optical axis position of the camera according to the initial imaging position of the camera, and then extracts the imaging position of the target in the camera, using the equivalent The imaging position is corrected by the surface distortion correction method, and multi-target positioning is realized by using the optical intersection measurement positioning algorithm through camera grouping. The advantages are: simple structure of the device, strong reliability, no complex calibration and correction for lens distortion, easy expansion, and high positioning accuracy.

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 Patents(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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