提出一种具有尺度与旋转不变性的影像自动匹配算法。首先基于方向小波变换构造三尺度特征点算子,进行两尺度匹配,保证其尺度不变性问题;其次构造特征点64维描述向量,解决影像匹配的旋转不变性。分别采用地面立体像对、无人机平台立体像对、航空立体像对进行试验分析。试验结果表明,提出的立体匹配算法具有良好的尺度和旋转不变性。%A stereo matching algorithm with invariant scale and rotation is presented.Firstly,the directional wavelet transform is used to extract the feature points of images with three scales,and a stereo matching at two scales is then carried out,this processing is scale invariant.Secondly,a key direction and a 64-dimensional describing vector are derived from these feature points to make the image matching be rotation invariant.This new algorithm is used to process different stereo images from close-range,un-manned aircraft,and airplane,and the scale and rotation invariant is clearly shown.
展开▼
