Error coming in the code
Traceback (most recent call last):
File "D:/pythonProjects/Object_movement/object_movement.py", line 88, in <module>
c = max(cnts, key=cv2.contourArea)
cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-i1s8y2i1\opencv\modules\imgproc\src\shapedescr.cpp:315: error: (-215:Assertion failed) npoints >= 0 && (depth == CV_32F || depth == CV_32S) in function 'cv::contourArea'
Reason of coming to this error
In the new version of cv2 Findcontours returns two values. That’s why return of [0] is contour instead of [1]Code having error:
cnts = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_SIMPLE)
cnts=cnts[1]
Error Free Code
cnts, hierarchy = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_SIMPLE)
