Let's say you have two objects, each described by some 2D corresponding points. In order to compare these two shapes, you can multiple algorithms:
- Procrustes analysis
- Search the Linear / Affine transformation (with least-squares)
- Other ...
My question is; what's the difference between the first two? For me, it seems like Procrustes is the same as finding the Linear/Affine transformation, only divided in 3 steps (translation, rotation and than scaling). And they both try to minimize square distance