Background Information and Techniques - Computer Animation: Algorithms and Techniques - page 414

FIGURE B.2—CONT'D
potential of numerical instability. It is the user's responsibility to inspect the W matrix and zero out
values that are small enough to present numerical problems. Once this is done, the matrices can be
used to solve the least-squares problem using a back substitution method similar to that used in LU
decomposition. The code for SVD is available in various software packages and can be found in
Numerical Recipes [ 16 ].