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2014-02-19 04:45:05 -0600	asked a question	undistortPoints with Python Hello, I got a problem with the function undistortPoints() when using Python. Hope someone can help me with that... Here my initialization of camera intrinsics and distortion coef... `K = np.array([[776.65250589, 0, 645.53907335], [0, 770.65916345, 374.76352079], [0.0,0.0, 1.0]], dtype = np.float64) dist_coef = np.array([6.47285370e-02, -1.55334472e-01, -1.29510733e-03, 1.95433144e-05, 4.63095096e-02], dtype = np.float32)` My call of undistortPoints is as follows: `cv2.undistortPoints(src, dst, K, dist_coef)` And here the error I get: `cv2.error: /home/michael/workspace/opencv-2.4.8/modules/imgproc/src/undistort.cpp:282: error: (-215) CV_IS_MAT(_cameraMatrix) && _cameraMatrix->rows == 3 && _cameraMatrix->cols == 3 in function cvUndistortPoints` Thanks in advance! Kind regards, Michael Barz