我想计算两个向量之间的欧氏距离(或两个Matrx行,无关紧要)。在OpenCV中是否有一个很好的功能?
Mat a,b; // num of rows/cols/channels does not matter, they just have to be equal for both
double dist = norm(a,b,NORM_L2);
资料来源:OpenCV, C++: Distance between two points
Mat pts1(nPts, 1, CV_8UC2), pts2(nPts, 1, CV_8UC2);
// populate them
Mat diffPts = pts1-pts2;
Mat ptsx, ptsy;
// split your points in x and y vectors. maybe separate them from start
Mat dist;
magnitude(ptsx, ptsy, dist); // voila!
同样适用于python:
dist = cv2.norm(pts - dst, cv2.NORM_L2)