Least-squares approximation by elements from matrix orbits achieved by gradient flows on compact lie groups.
Chi-Kwong LiYiu-Tung PoonThomas Schulte-HerbrüggenPublished in: Math. Comput. (2011)
Keyphrases
- lie group
- least squares
- infinite dimensional
- parameter space
- vector field
- vector space
- geometric structure
- riemannian manifolds
- euclidean space
- mean shift
- covariance matrices
- riemannian metric
- finite dimensional
- convex sets
- gaussian mixture model
- active contours
- distance measure
- optical flow
- tensor field
- feature vectors
- high dimensional