Unhandled exception报错：OpenCV Error: Assertion failed (npoints >= 0 && (depth == CV_32S || depth == CV_32F)) in cv::approxPolyDP, file C:\builds_4_PackSlave-win32-vc12-shared\opencv\modules\imgproc\src\contours.cpp, line 1871报错：OpenCV Error: Assertion f
阅读背景：
vs2013+opencv2.4 imread相对路径读取图片失败Unhandled exception
来源：互联网
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