mirror of
https://github.com/opencv/opencv.git
synced 2024-12-02 07:39:57 +08:00
63 lines
1.5 KiB
Matlab
63 lines
1.5 KiB
Matlab
#! /usr/bin/env octave
|
|
## This is a standalone program. Pass an image name as a first parameter of the program.
|
|
|
|
cv;
|
|
highgui;
|
|
|
|
## toggle between CV_HOUGH_STANDARD and CV_HOUGH_PROBILISTIC
|
|
USE_STANDARD=0;
|
|
|
|
filename = "../../docs/ref/pics/building.jpg"
|
|
if (size(argv, 1)>=1)
|
|
filename = argv(){1};
|
|
endif
|
|
|
|
src=cvLoadImage(filename, 0);
|
|
if (!swig_this(src))
|
|
printf("Error opening image %s\n",filename);
|
|
exit(-1);
|
|
endif
|
|
|
|
dst = cvCreateImage( cvGetSize(src), 8, 1 );
|
|
color_dst = cvCreateImage( cvGetSize(src), 8, 3 );
|
|
storage = cvCreateMemStorage(0);
|
|
lines = 0;
|
|
cvCanny( src, dst, 50, 200, 3 );
|
|
cvCvtColor( dst, color_dst, CV_GRAY2BGR );
|
|
|
|
if (USE_STANDARD)
|
|
lines = cvHoughLines2( dst, storage, CV_HOUGH_STANDARD, 1, CV_PI/180, 100, 0, 0 );
|
|
|
|
for i=0:min(lines.total, 100)-1,
|
|
line = lines{i};
|
|
rho = line{0};
|
|
theta = line{1};
|
|
pt1 = CvPoint();
|
|
pt2 = CvPoint();
|
|
a = cos(theta);
|
|
b = sin(theta);
|
|
x0 = a*rho;
|
|
y0 = b*rho;
|
|
pt1.x = cvRound(x0 + 1000*(-b));
|
|
pt1.y = cvRound(y0 + 1000*(a));
|
|
pt2.x = cvRound(x0 - 1000*(-b));
|
|
pt2.y = cvRound(y0 - 1000*(a));
|
|
cvLine( color_dst, pt1, pt2, CV_RGB(255,0,0), 3, 8 );
|
|
endfor
|
|
|
|
else
|
|
lines = cvHoughLines2( dst, storage, CV_HOUGH_PROBABILISTIC, 1, CV_PI/180, 50, 50, 10 );
|
|
for line = CvSeq_map(lines),
|
|
line = line{1};
|
|
cvLine( color_dst, line{0}, line{1}, CV_RGB(255,0,0), 3, 8 );
|
|
endfor
|
|
endif
|
|
|
|
cvNamedWindow( "Source", 1 );
|
|
cvShowImage( "Source", src );
|
|
|
|
cvNamedWindow( "Hough", 1 );
|
|
cvShowImage( "Hough", color_dst );
|
|
|
|
cvWaitKey(0);
|