OpenCV perspective transform in python

Question

I\'m trying to rectify an image in python. I have a Homography H (from a rotation matrix that rotates around the x, y and z axis) that looks like this for example: [

Answer 1

It says the image should be np.float32 or np.float64.

So convert the image first by img_cv2 = np.float32(img_cv2).

Then apply the cv2.perspectiveTransform() and cv2.warpPerspective()

Check this tutorial for demo