OpenCV Error: Incorrect size of input array (Non-positive cols or rows) in cvInitMatHeader, file /build/buildd/opencv-2.4.8+dfsg1/modules/core/src/array.cpp, line 146
terminate called after throwing an instance of 'cv::Exception'
what():  /build/buildd/opencv-2.4.8+dfsg1/modules/core/src/array.cpp:146: error: (-201) Non-positive cols or rows in function cvInitMatHeader