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cvCalibrateCamera2 assertion

Hello,

after using OpenCV 2.4.4 for long time now i decides to take the step to upgrade to OpenCV 3.2.0 but i have some troubles bringing the distortion correction back to work.

The cvCalibrateCamera2 function tries to convert the points to homogeneous coordinates but always runs into an assertion in convertPointsHomogeneous: CV_Assert( _dst.fixedType() );

As the assertion handles a Mat that is defined in cvCalibrateCamera2 it seems like this is an internal error of OpenCV.

OpenCV Error: Assertion failed (_dst.fixedType()) in cv::convertPointsHomogeneous, file D:\Repositories\OpenCV\modules\calib3d\src\fundam.cpp, line 1029