3D Models and Matching

Spin Image Construction

• A spin image is constructed

- about a specified oriented point o of the object surface

- with respect to a set of contributing points C, which is

controlled by maximum distance and angle from o.

• It is stored as an array of accumulators S(a,b) computed via:

• For each point c in C(o)

1. compute a and b for c.

2. increment S (a,b)