Orthogonal vs. Perspective Projections

Orthographic projection

Scaled Orthographic projection

Perspective projection

How does the 2D projection of a 3D pose change ...

… under a perspective projection when we shift the body in the 3D world?

What is a scaled orthographic projection? What is a perspective one?

scaled orthographic projection:

u = s * x
v = s * y

perspective projection:

u = -f * (x/z) + c0
v = -f * (y/z) + c1

This short video of simple projection tests I conducted should make the difference between the two projections clear:

You need to install a Flash Player to watch this video!

 
public/projections.txt · Last modified: 2011/03/24 22:43 (external edit) · []
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