OpenCV4入门133:LSD快速线检测

索引地址:系列索引

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// 功能:代码 5-17 LSD 快速线检测
// 作者:朱伟 zhu1988wei@163.com
// 来源:《OpenCV图像处理编程实例》
// 博客:http://blog.csdn.net/zhuwei1988
// 更新:2016-8-1
// 说明:版权所有,引用或摘录请联系作者,并按照上面格式注明出处,谢谢。//
#include <iostream>
#include <string>
#include "opencv2/core/core.hpp"
#include "opencv2/core/utility.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/imgcodecs.hpp"
#include "opencv2/highgui/highgui.hpp"
using namespace std;
using namespace cv;
int main()
{

cv::Mat srcImage =
cv::imread("..\\images\\building.jpg", 0);
if (!srcImage.data)
return -1;
// canny边缘检测
Canny(srcImage, srcImage, 50, 200, 3);
// 创建LSD检测类
#if 1
Ptr<LineSegmentDetector> ls = createLineSegmentDetector(LSD_REFINE_STD);
#else
Ptr<LineSegmentDetector> ls = createLineSegmentDetector(LSD_REFINE_NONE);
#endif
double start = double(getTickCount());
vector<Vec4f> lines_std;
// 线检测
ls->detect(srcImage, lines_std);
double duration_ms = (double(getTickCount()) - start) * 1000 / getTickFrequency();
std::cout << "It took " << duration_ms << " ms." << std::endl;
// 绘图线检测结果
Mat drawnLines(srcImage);
ls->drawSegments(drawnLines, lines_std);
cv::imshow("Standard refinement", drawnLines);
cv::waitKey();
return 0;
}