Projecting Distortion Calibration and Evaluation of Coding Fringes in Structured Light System  

作　　者：Haibin Wu Qing Xu Xi Wu Guanglu Sun Xiaoyang Yu Xiaoming Sun 

机构地区：[1]The Higher Educational Key Laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang Province,Harbin University of Science and Technology,Harbin150080,China

出　　处：《国际计算机前沿大会会议论文集》2016年第1期139-140,共2页International Conference of Pioneering Computer Scientists, Engineers and Educators（ICPCSEE）

基　　金：The support of National Science Foundation of China (61571168,61401126), Leading Talent Team Backup Leader Foundation of Heilongjiang Province are gratefully acknowledged.

摘　　要：Coded structured light is an accurate, fast 3D measurement approach with high sampling density, of which the encoded fringes are distorted when projected to curved surface. Focused on the demand of encoding, decoding, multiview registration and system calibration, we expect to obtain undistorted fringes from camera image. Therefore, in this paper, we analyze the accuracy and sampling density of projecting distortion calibration approach based on control point and fitting surface. Moreover, combining the characteristic of coded structured light system, we design encoded fringe projecting distortion calibration scheme based on simplified encoded structured light model. Primarily, we neglect the minor parameters that affect the calibration in structured light model to reduce complexity. Then, we build the correspondence between camera image points and projector image points and achieve the calibration. Finally, we design evaluation scheme of projecting distortion calibration with parallelism and equal interval, and verify the effectiveness and accuracy of the approach through visual effect and experimental data.

关 键 词：CODED structured light Projecting DISTORTION GEOMETRIC CALIBRATION Encoded FRINGE 

分 类 号：C5[社会学]