FeatureMatchTest::FeatureMatchTest(std::shared_ptr<Pattern> left, std::shared_ptr<Pattern> right, std::shared_ptr<cv::DescriptorMatcher> matcher) :
leftPattern(left), rightPattern(right), matcher(matcher) {

    //step1:Create detector
    int minHessian = 400;
    SurfFeatureDetector detector(minHessian);

    
 
//step2:Detecte keypoint
    detector.detect(leftPattern->image, leftPattern->keypoints);
    detector.detect(rightPattern->image, rightPattern->keypoints);

    //step3:Compute descriptor
    detector.compute(leftPattern->image, leftPattern->keypoints, leftPattern->descriptors);
    detector.compute(rightPattern
 
->image, rightPattern->keypoints, rightPattern->descriptors);
}