基于仿射不变量的长基线立体匹配  

Wide Baseline Stereo Matching Based on Affine Invariant

作　　者：贾涛[1] 陈涛[1] 杨润奎 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130031 [2]驻航天部二院军代表室,北京100854

出　　处：《仪器仪表学报》2005年第z1期623-624,共2页Chinese Journal of Scientific Instrument

摘　　要：为了实现长基线图像特征点的立体匹配,提出了一种新的基于特征点仿射变换不变性的匹配算法。通过对仿射变换矩阵进行奇异值分解,利用旋转角度和尺度变换因子来估计仿射矩阵的合理初始值,加快匹配算法的收敛速度,避免搜索可能收敛于某一局域极小值或发散。另外,通过估计特征点的外极线几何关系和局部运动矢量消除错误匹配。In order to provide the feature points stereo matching between two wide baseline images, a novel algorithm based on affine invariant feature of the feature points is proposed. After decomposing the affine matrix using the singular value decomposition (SVD), a reasonable initial state can be estimated by the rotation angle and scaling factor so as to converge quickly, avoid the local minima and divergence. In addition, the false matches can be eliminated by the estimated epiploar geometry and local motion vector of feature points.

关 键 词：立体匹配 长基线 特征点 仿射不变量 

分 类 号：TH7-55[机械工程—仪器科学与技术]