区域的实时立体匹配的改进算法  

Improved Stereo Matching Algorithm Based on Region

作　　者：李静[1] 于虹[1] 

机构地区：[1]西安工业大学电子信息工程学院,西安710032

出　　处：《西安工业大学学报》2012年第3期231-235,共5页Journal of Xi’an Technological University

摘　　要：针对在立体匹配研究领域中弱纹理区域的匹配问题,文中提出了一种基于区域的实时立体匹配改进算法.采用匹配测度函数像素灰度差的绝对值和(Sum of Absolute Differ-ence,SAD),通过平均误差阈值算法检测出高误差能量;针对遮挡区域造成的不可信视差预测点,进行误差能量计算;利用滤波加速算法减少计算匹配窗口相似性复杂度,既降低了误匹配率,又提高了算法的运行速度.实验结果表明,改进算法的误匹配像素百分比明显减小,且能满足系统对实时性的要求.To solve the problem of stereo matching of weak texture region in the field of stereo matching,this paper presents an improved stereo matching algorithm which is based on region.SAD of a matching measure function is chosen to calculate matching cost.High error energy in the error energy of disparity is observed to detect the points around the object boundaries,and the similarity complexity of match window is decreased by the box filtering algorithm.This improved algorithm can increase the reliability of the obtained disparity map,and the operational speed.The simulation results show that the PBM is decreased sharply and the requirement for real-time can be met.

关 键 词：区域匹配 滤波加速 误差阈值 误匹配率 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]