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 1 Calculate Homography with and without SVD 1 Is central projection of the imaging process a projective transformation? 1 Properties of an unique involution for $2$ points in $\mathbb{R}P^1$ 0 Plane projective transformations that preserve a unit circle at the origin 0 How do I obtain an implicit Cartesian equation of a surface from an equation given in homogeneous coordinates?

### Reputation (91)

 +25 Calculate Homography with and without SVD +10 Is central projection of the imaging process a projective transformation? +15 Prove that a collineation has an axis if having a centre +15 Properties of an unique involution for $2$ points in $\mathbb{R}P^1$

### Question (1)

 0 Plane projective transformations that preserve a unit circle at the origin

### Tags (15)

 3 projective-geometry × 10 1 matrices 1 involutions 1 svd 1 harmonic-numbers 0 geometry × 3 1 projection 0 projective-space 1 computer-vision 0 combinatorics

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