How to copy a image region using opencv in python?

Question

I am trying to implement a license plate recognition software using the ideas from http://iamabhik.wordpress.com/category/opencv/.

I implemented the plate location u

Answer 1

Example: If you have few points, and want to copy region contains its

r = cv2.boundingRect(pts)
cv2.imwrite('roi.png', im[r[0]:r[0]+r[2], r[1]:r[1]+r[3]])