[cv]Image transformation

Image transform









image warping



similarity transformation





A perspective transformation is a homography when the content of the image is on a plane.

In pixel coordinates, (0,0) is located at top left.

The DOF is 8 in a homography transformation.

































How many points are necessary to compute a homography? 4 points, 8 equations.

Here is a good tutorial for computing homography matrix.








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