Camera calibration based on color-coded phase-shifted fringe

Aiming at the low adaptability of blurring noise of target feature points in traditional calibration methods, a calibration method based on the color-coded phase-shifted fringe is proposed. Using a liquid crystal display panel as the calibration target, horizontal and vertical color-coded phase-shif...

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Bibliographic Details
Published inGuang Dian Gong Cheng = Opto-Electronic Engineering Vol. 48; no. 1; p. 200118
Main Authors Wei, Boyan, Tian Qingguo, Ge Baozhen
Format Journal Article
LanguageChinese
English
Published Chengdu Editorial Office of Opto-Electronic Advances 01.01.2021
Subjects
Blurring
Calibration
Cameras
Color
Feature extraction
Intersections
Liquid crystal displays
Target recognition
China
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Summary:Aiming at the low adaptability of blurring noise of target feature points in traditional calibration methods, a calibration method based on the color-coded phase-shifted fringe is proposed. Using a liquid crystal display panel as the calibration target, horizontal and vertical color-coded phase-shifted stripes are displayed in sequence; the orthogonal phase-shifted stripes are obtained by separating color channels; based on the phase-shifteg theory, the intersections of the orthogonal phase truncation lines are calculated as the feature points. After changing the target position multiple times and extracting feature points, the plane-based camera calibration technique is applied to realize the calibration of both the single camera and the binocular system. Furthermore, color-coded phase-shift circles are added to four corners of the target pattern to automatically extract and sort feature points. Accordingly, the efficiency of calibration is promoted. The experimental results indicate that when the target ima
ISSN:1003-501X
DOI:10.12086/oee.2021.200118