How to use opencv to realize Lane Detection

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effect

void lane_detection(cv::Mat &src, cv::Mat &dst) { dst = cv::Mat::zeros(src.size(),src.type()); cv::Mat grid =cv::Mat::zeros(src.size(),src.type()); int iStep = 25; int iNUmsX = src.cols / iStep; int inUmsY = src.rows / iStep; for(int i = 1; i iDiffTh) || (iValueY - iValueYPre > iDiffTh && iValueY - iValueYNext > iDiffTh)) { add.at(i, j) = 255; } } } qDebug()