cv2.drawContours()、cv2.findContours()、cv2.boundingRect(img)函数用法解析

cv2.drawContours()函数的功能是绘制轮廓，输入变量如下：

cv2.drawContours(image, contours, contourIdx, color, thickness=None, lineType=None, hierarchy=None, maxLevel=None, offset=None)cv2.drawContou