Question

用opencv的cvHoughLines2提取一些线，想控制一下画出线的斜率，该怎么做

for (int i = 0; i < lines->total; i++)
{
CvPoint* line = (CvPoint*)cvGetSeqElem (lines, i);

{
cvLine (src, line[0], line[1], CV_RGB(255,0,0), 3, 8);

}
}

Answer 1

你得到的这个lines里面的应该不是Point吧，应该是直线的(rho, theta)