大神们,求解
错误提示: cnts = sorted(cnts, key=cv.contourArea, reverse=True)[:5]
cv2.error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\imgproc\src\shapedescr.cpp:315: error: (-215:Assertion failed) npoints >= 0 && (depth == CV_32F || depth == CV_32S) in function 'cv::contourArea'
在提取轮廓后,想对轮廓由轮廓面积大小进行排序,但一直报错
百度找了好久也没找到解决办法

