great为二值化后的图片vector> contours;vector hierarchy;findContours(great, contours, hierarchy, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_SIMPLE);在这段代码中用findContours进行轮廓检测程序结束后会触发一个断点，请各位大神求解
http://blog.csdn.net/superdont/article/details/24933597