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comparison python/compute-homography.py @ 235:584613399513

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added script and functions to remove object tables
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Thu, 05 Jul 2012 23:32:14 -0400
parents ba71924cadf5
children eb4525853030
comparison
equal deleted inserted replaced
234:2d34060db2e9 235:584613399513
50 # H = cvCreateMat(3, 3, CV_64FC1); 50 # H = cvCreateMat(3, 3, CV_64FC1);
51 51
52 # cvFindHomography(imagePoints, worldPoints, H); 52 # cvFindHomography(imagePoints, worldPoints, H);
53 53
54 54
55 if '--help' in options.keys() or '-h' in options.keys(): 55 if '--help' in options.keys() or '-h' in options.keys() or len(args) == 0::
56 print('''The argument should be the name of a file containing at least 4 non-colinear point coordinates: 56 print('Usage: {0} --help|-h [--video_frame <video frame filename>] [<point_correspondences.txt>]'.format(sys.argv[0]))
57 print('''The positional argument should be the name
58 of a file containing at least 4 non-colinear point coordinates (point correspondences:
57 - the first two lines are the x and y coordinates in the projected space (usually world space) 59 - the first two lines are the x and y coordinates in the projected space (usually world space)
58 - the last two lines are the x and y coordinates in the origin space (usually image space)''') 60 - the last two lines are the x and y coordinates in the origin space (usually image space)''')
59 sys.exit()
60
61 if len(args) == 0:
62 print('Usage: {0} --help|-h [--video_frame <video frame filename>] [<point_correspondences.txt>]'.format(sys.argv[0]))
63 sys.exit() 61 sys.exit()
64 62
65 dstPts, srcPts = cvutils.loadPointCorrespondences(args[0]) 63 dstPts, srcPts = cvutils.loadPointCorrespondences(args[0])
66 homography, mask = cv2.findHomography(srcPts, dstPts) # method=0, ransacReprojThreshold=3 64 homography, mask = cv2.findHomography(srcPts, dstPts) # method=0, ransacReprojThreshold=3
67 np.savetxt(utils.removeExtension(sys.argv[1])+'-homography.txt',homography) 65 np.savetxt(utils.removeExtension(sys.argv[1])+'-homography.txt',homography)