Mercurial Hosting > traffic-intelligence
diff python/cvutils.py @ 895:739acd338cc0
added script to extract camera info from tacal file by Lund University (T analyst)
| author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
|---|---|
| date | Thu, 01 Jun 2017 14:54:11 -0400 |
| parents | 0c1fed9e8862 |
| children | f5a49b603e8b |
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--- a/python/cvutils.py Thu Jun 01 10:33:07 2017 -0400 +++ b/python/cvutils.py Thu Jun 01 14:54:11 2017 -0400 @@ -388,6 +388,14 @@ H, mask = cv2.findHomography(array(srcPoints), array(dstPoints), method = 0) # No need for different methods for finding homography return H + def getIntrinsicCameraMatrix(cameraData): + return array([[cameraData['f']*cameraData['Sx']/cameraData['dx'], 0, cameraData['Cx']], + [0, cameraData['f']/cameraData['dy'], cameraData['Cy']], + [0, 0, 1.]]) + + def getDistortionCoefficients(cameraData): + return array([cameraData['k']]+4*[0]) + def undistortedCoordinates(map1, map2, x, y, maxDistance = 1.): '''Returns the coordinates of a point in undistorted image map1 and map2 are the mapping functions from undistorted image @@ -480,11 +488,11 @@ ## Close up image loading and calibrate cv2.destroyAllWindows() if len(objpoints) == 0 or len(imgpoints) == 0: - return False + return None try: ret, camera_matrix, dist_coeffs, rvecs, tvecs = cv2.calibrateCamera(objpoints, imgpoints, gray.shape[::-1], None, None) except NameError: - return False + return None savetxt('intrinsic-camera.txt', camera_matrix) return camera_matrix, dist_coeffs