Fast Line Detector demo

Compares cv.FastLineDetector against cv.LineSegmentDetector.

Sources:

input image

img = imread(fullfile(mexopencv.root(),'test','corridor.jpg'));
gray = cv.cvtColor(img, 'RGB2GRAY');

create LSD and FLD detectors

lsd = cv.LineSegmentDetector();
fld = cv.FastLineDetector();

detect the lines

tic, lines_lsd = lsd.detect(gray); toc
tic, lines_fld = fld.detect(gray); toc

Elapsed time is 0.076713 seconds.
Elapsed time is 0.817230 seconds.

show found lines

out_lsd = lsd.drawSegments(img, lines_lsd);
out_fld = fld.drawSegments(img, lines_fld);
subplot(121), imshow(out_lsd), title('LSD result')
subplot(122), imshow(out_fld), title('FLD result')