2015-09-03 10:31:20 -0600 | asked a question | imshow misunderstanding ? "2.bmp" is a valid bitmap file located in the correct folder. So what's wrong with the following code to make it produce the error ... error: ........\opencv\modules\highgui\src\window.cpp:261: error: (-215) size.width>0 && size.height>0 in function cv::imshow |