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BRISK原理：

/* *@function BRISK_Detect.cpp *@brief 使用BRISK特征检测并匹配目标 *@author ltc *@date 17:16 Thursday，December 3rd，2015*/#include
   
    #include
    
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      #include
      
       #include
       
        using namespace std;using namespace cv;int main(int argc,char* argv[]){	Mat queryImage,trainImage;	queryImage=imread("4.jpg",IMREAD_COLOR);	trainImage=imread("2.jpg",IMREAD_COLOR);		vector
        
          queryKeyPoint,trainKeyPoint; Mat queryDescriptor,trainDescriptor; int thresh=60; int octave=4; float patternScale=1.0f; BRISK briskDetector(thresh,octave,patternScale); briskDetector.detect(queryImage,queryKeyPoint); briskDetector.compute(queryImage,queryKeyPoint,queryDescriptor); briskDetector.detect(trainImage,trainKeyPoint); briskDetector.compute(trainImage,trainKeyPoint,trainDescriptor); drawKeypoints(queryImage,queryKeyPoint,queryImage); drawKeypoints(trainImage,trainKeyPoint,trainImage); imshow("query",queryImage); imshow("train",trainImage); vector
         
           matches; BFMatcher matcher(NORM_HAMMING); matcher.match(queryDescriptor,trainDescriptor,matches); Mat image_match; drawMatches(queryImage,queryKeyPoint,trainImage,trainKeyPoint,matches,image_match); imshow("image_match",image_match); waitKey(0); return 0;}