摘要
提出了一种基于直线段特征的分级立体图像匹配算法。根据直线段构造了长方形区域作为立体匹配的基元,计算区域的灰度均值及区域的转动惯量等属性值,构造相似性度量函数得到初级匹配结果;根据直线段间的几何关系建立二级匹配算法,求解基础矩阵。在基础矩阵的指导下,完成三级立体匹配,实验结果表明了该算法的有效性和可行性。
A gradation stereo matching algorithm based on line segments feature is proposed.Its basic idea is,first,rectangle matching units are constructed by line segments,some property values are computed of matching units,such as average intensity,NMI and areas etc,the similar metric function is designed and the elementary matching results is gained.Then,the two-grade stereo matching method is built based on the geometry relation between two lines,and the foundation matrix is solved.Further,the three-grade stereo matching algorithm is finished by foundation matrix guidance.The experimental results show that the algorithm is feasible and efficient.
出处
《计算机工程与设计》
CSCD
北大核心
2011年第4期1391-1393,1397,共4页
Computer Engineering and Design
基金
陕西省自然科学基础研究基金项目(2009JM8004-7)
关键词
直线特征
匹配基元
立体匹配
局部相似性
度量函数
line feature
matching units
stereo matching
local similarity
measure function
