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comparison python/cvutils.py @ 160:b0719b3ad3db

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created function to load point correspondences and updates scripts that use it
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Mon, 19 Sep 2011 16:43:28 -0400
parents 115f7f90286d
children 8e7b354666ec
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159:115f7f90286d 160:b0719b3ad3db
49 by the matlab camera calibration tool''' 49 by the matlab camera calibration tool'''
50 from numpy.lib.io import loadtxt, savetxt 50 from numpy.lib.io import loadtxt, savetxt
51 from numpy.lib.function_base import append 51 from numpy.lib.function_base import append
52 points = loadtxt(filename, delimiter=',') 52 points = loadtxt(filename, delimiter=',')
53 savetxt(utils.removeExtension(filename)+'-point-correspondences.txt',append(points[:,:2].T, points[:,3:].T, axis=0)) 53 savetxt(utils.removeExtension(filename)+'-point-correspondences.txt',append(points[:,:2].T, points[:,3:].T, axis=0))
54
55 def loadPointCorrespondences(filename):
56 '''Loads and returns the corresponding points in world (first 2 lines) and image spaces (last 2 lines)'''
57 from numpy.lib.io import loadtxt
58 from numpy import float32
59 points = loadtxt(filename, dtype=float32)
60 return (points[:2,:].T, points[2:,:].T) # (world points, image points)
54 61
55 def computeHomography(srcPoints, dstPoints, method=0, ransacReprojThreshold=0.0): 62 def computeHomography(srcPoints, dstPoints, method=0, ransacReprojThreshold=0.0):
56 '''Returns the homography matrix mapping from srcPoints to dstPoints (dimension Nx2)''' 63 '''Returns the homography matrix mapping from srcPoints to dstPoints (dimension Nx2)'''
57 #cvSrcPoints = arrayToCvMat(srcPoints); 64 #cvSrcPoints = arrayToCvMat(srcPoints);
58 #cvDstPoints = arrayToCvMat(dstPoints); 65 #cvDstPoints = arrayToCvMat(dstPoints);