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Example: img of size 10x10 and templ of size 11x9. In subsequent code this will results in either width or height of corrSize to be zero (0). Line 261 will call crossCorr which will then have a zero size of either blocksize.width or blocksize.height resulting in a division by zero crach in lines 137 or 138.
OpenCV: open source computer vision library Homepage: http://opencv.org Online docs: http://docs.opencv.org Q&A forum: http://answers.opencv.org Dev zone: http://code.opencv.org Please read before starting work on a pull request: http://code.opencv.org/projects/opencv/wiki/How_to_contribute Summary of guidelines: * One pull request per issue; * Choose the right base branch; * Include tests and documentation; * Clean up "oops" commits before submitting; * Follow the coding style guide.