cv2.findContours not enough values to unpack(expected 3, got 2)

eumnq8

cv2.findContours not enough values to unpack(expected 3, got 2)

这个报错是新版opencv findContours只返回两个参数，老版本opencv返回3个参数，

修改方法，去掉第一个参数即可

＿, contours, _ = cv2.findContours(result_window_bin, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)修改为contours, _ = cv2.findContours(result_window_bin, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)