opencv - How do I use a Homography Matrix properly? - Stack Overflow

The reverse formula would be: p'=[wx,wy,w] = [u,v,1]*H^-1;
where H^-1 is the inverse of H; (it exists by definition)
dividing by the homogeneous coordinate w:
p = p'/w = [x,y,1], where the coordinates [x,y] map to

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