compatibility issue with contourArea in openCV 3

Question

I am trying to do a simple area calculation of contours I get from findContours. My openCv version is 3.1.0

My code is:

cc = cv2.findContours(im_bw.c         


        

Answer 1

Thanks for @ZdaR; By the way, you can do the following in OpenCV 4.1:

contours, hierarchy = cv2.findContours(im_bw.copy(), cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)