双目PMP视觉测量中立体匹配方法的设计与实现

中国机械工程 ›› 2013, Vol. 24 ›› Issue (19): 2635-2640,2646.

双目PMP视觉测量中立体匹配方法的设计与实现

熊维;李文龙;尹周平

华中科技大学数字制造装备与技术国家重点实验室，武汉，430074

出版日期:2013-10-10 发布日期:2013-10-11
基金资助:
国家自然科学基金资助项目（51105155，50975112）；中央高校基本科研业务费资助项目（2012QN251）
National Natural Science Foundation of China（No. 51105155，50975112）;
Fundamental Research Funds for the Central Universities（No. 2012QN251）

Design and Implementation of a Stereo Matching Method in Binocular PMP Vision Measurement

Xiong Wei;Li Wenlong;Yin Zhouping

State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology,Wuhan,430074

Online:2013-10-10 Published:2013-10-11
Supported by:

National Natural Science Foundation of China（No. 51105155，50975112）;
Fundamental Research Funds for the Central Universities（No. 2012QN251）

摘要/Abstract

摘要：

针对PMP视觉测量中物体深度变化大或表面形状复杂时出现的误匹配问题，提出一种基于区域分割和视差修正的立体匹配方法。研究了四步相移法和多频外差相移的基本原理，并采用基于OpenCV的标定立体校正方法对光栅图像进行了校正;结合PMP视觉测量系统的特点对相机视场进行分析，根据视场各区域的相位信息特点以及视差约束，提出基于混合阈值的区域分割原则和实现方法;应用视差求解和视差校正获得有效的视差图，并在自主研发的PMP视觉测量系统中验证了立体匹配方法的有效性。

关键词: PMP视觉测量, 立体匹配, 区域分割, 视差修正

Abstract:

In order to resolve the mismatching problems caused by the large change in the depth of the objects or the complex surface shape in the field of PMP visual measurement,this paper proposed a stereo matching method based on region segmentation and parallax correction. The basic principle of four-step phase shift method and the multi-frequency heterodyne were investigated, and stereo rectification method in OpenCV software package was used to rectify the raster image. The field of view of the cameras was analyzed according to the characteristics of the PMP vision measurement system. Using the characteristics of the phase information in the field of view and the parallax constraint, the principle and the method of region segmentation were proposed based on the mixed threshold. Furthermore, the valid parallax maps were obtained by parallax solving and parallax correction, and several test experiments were carried out to demonstrate the effectiveness of the proposed stereo matching method in PMP visual measurement system.

Key words: phase measuring profilometry(PMP) vision measurement, stereo matching, region segmentation, parallax correction

中图分类号:

TG806

熊维;李文龙;尹周平. 双目PMP视觉测量中立体匹配方法的设计与实现[J]. 中国机械工程, 2013, 24(19): 2635-2640,2646.

Xiong Wei;Li Wenlong;Yin Zhouping. Design and Implementation of a Stereo Matching Method in Binocular PMP Vision Measurement[J]. China Mechanical Engineering, 2013, 24(19): 2635-2640,2646.

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