一种极线约束修正数字图像相关匹配的立体视觉测量方法

发布时间：2018-03-31 18:14

本文选题：测量　切入点：极线约束　出处：《中国激光》2017年08期

【摘要】：为了提高立体视觉方法的测量精度,提出一种极线约束修正数字图像相关(DIC)匹配的立体视觉测量方法。该方法通过DIC方法获得立体匹配的初值,应用极线约束对匹配计算结果进行修正,取位于右极线上距DIC匹配结果最近的点作为新的匹配点,并将该种匹配修正方法推广到右图像时序匹配。在材料实验机上完成304不锈钢试件单向拉伸实验,以引伸计的测量结果为真值,对比极线约束修正前后的双目立体视觉的测量误差。实验结果表明,极线约束修正以后,双目立体视觉测量误差的最大值、平均值及均方值均减小,说明极线约束修正后的匹配方法可以提高立体视觉方法的测量精度。
[Abstract]:In order to improve the measurement accuracy of stereo vision method, a stereo vision measurement method based on DIC-matching with pole line constraint correction digital image is proposed.In this method, the initial values of stereo matching are obtained by DIC method, and the matching results are modified by pole line constraints. The nearest point to the DIC matching result on the right pole line is taken as the new matching point.This method is extended to the right image timing matching.The uniaxial tensile test of 304 stainless steel specimen was carried out on the material experiment machine. The measuring error of binocular stereo vision before and after the correction of pole line constraint was compared with the true value of the measuring result of extensometer.The experimental results show that the maximum value, mean value and mean square value of binocular stereo vision measurement error decrease after pole line constraint correction, which indicates that the matching method with pole line constraint correction can improve the measurement accuracy of stereo vision method.
【作者单位】：哈尔滨工业大学土木工程学院;哈尔滨工业大学结构工程灾变与控制教育部重点实验室;哈尔滨工业大学土木工程智能防灾减灾工业与信息化部重点实验室;
【基金】：国家自然科学基金(51478148) 黑龙江省自然科学资金(E201434) 哈尔滨市创新人才研究专项基金(2015RAQXJ028)
【分类号】：TP391.41

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