Calibration/distortion problem

Hello, 

I've been trying to use cvCalibFilter to do calibration. I found that
in  version 9.6, the program would crash at some point after adding
the last frame, ( after an internal call to SVD) . I upgraded to 9.7
and the CalibFilter no longer crashes, but the resulting parameters
include Nan and infinity. 

I tried using CalibrateCamera2, and the result was that the distortion
values were all zeros, which seems unlilkey and does not agree with
the results from the matlab calibration toolkit or the camera  
specifications.  I get the same zero distortion using CalibrateCamera
and CalibrateCamera_64.  

Any recomendations would be greatly appreciated. 


-EM









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