Find largest contour opencv python

1. How do you find the largest contour in OpenCV Python?
2. How do you find the contour in OpenCV?

How do you find the largest contour in OpenCV Python?

OpenCV is very dynamic in which we can first find all the objects (or contours) in an image using the cv2. findContours() function. We can then find the size of each object using the cv2. contourArea() function.

How do you find the contour in OpenCV?

To draw the contours, cv. drawContours function is used. It can also be used to draw any shape provided you have its boundary points. Its first argument is source image, second argument is the contours which should be passed as a Python list, third argument is index of contours (useful when drawing individual contour.