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In order to extract the flat feature stars, which are used to implement the space image registration, a feature descriptor based on WLD (Weber Local Descriptor) and feature dynamic selection method is proposed in this paper. Firstly, the feature stars are extracted and described by excitation and orientation using the WLD transform. Then we utilize a dynamic feature selection algorithm (DFSA), which...
Efficiency image matching technology is very important to assembly product line based on machine vision. SIFT (scale invariant feature transform) descriptor is commonly used in image matching because of the good invariance of scale, rotation, illumination. But its algorithm is complicated and computation time is long. To improve SIFT algorithm real-time quality, the method of reducing similar measure...
A stereo matching algorithm based on scale invariant control points is proposed for dynamic programming. Firstly, for the problem of large amount of calculation on SIFT feature extraction algorithm, the stable feature points are extracted from left and right image respectively and described by improved SIFT algorithm. Secondly, basing on the description of feature points, the kd-tree nearest neighbor...
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