tangjie77wd

I got the same issue even if i choosed 'OPENCV_ENABLE_NONFEE' ! Someone told me his solution----re-run CMAKE with WITH_WIN32UI, since you are on Windows, and eventually with WITH_QT.

@akkitech @AchuThanFinstreet @barabanus I have solved my problem with the following solution : #include #include using namespace cv::ximgproc; { ... vector lines; `Ptr detector = cv::ximgproc::createFastLineDetector(); ` detector->detect(roi, lines); }...

@barabanus Opencv shows an example [https://docs.opencv.org/4.1.0/d1/d9e/fld_lines_8cpp-example.html](url) which supports both LSD and FastLineDetector.How could they draw lines in the example if they did not imcomplete LSD ? `// Because of some...