Image transformation in OpenCV

Question

This question is related to this question: How to remove convexity defects in sudoku square

I was trying to implement nikie\'s answer in Mathematica to OpenCV

Answer 1

if you have source points and end points (you only need 4), you can plug them into cv2.getPerspectiveTransform, and use that result in cv2.warpPerspective. Gives you a nice flat result.