Orientation codes-based template matching method
Hongyan Chen · Jisuanji gongcheng yu sheji · 2007
A new method of orientation codes-based template matching is proposed.The proposed algorithm consists of two stages.In the first stage,the matching candidates are selected using histograms of orientation codes and rotation angles are computed roughly.In the second stage,matching based on differences of orientation codes between template and rotated subimage is performed only for the matching candidates.Experiments demonstrate the proposed method is robust against rotation variation in the real world images since it is based on matching gradient information around each pixel,computed in the form of orientation codes,rather than the gray values directly.