20 search results - page 2 / 4 » Moment Invariants for the Analysis of 2D Flow Fields |
VISSYM
2003
13 years 6 months ago
2003
Feature tracking algorithms for instationary vector fields are usually based on a correspondence analysis of the features at different time steps. This paper introduces a method ...
ICCV
2001
IEEE
14 years 7 months ago
2001
IEEE
Studies of image motion typically address motion categories on a case-by-case basis. Examples include a moving point, a moving contour, or a 2D optical flow field. The typical ass...
CVPR
2009
IEEE
15 years 16 days ago
2009
IEEE
All surfaces can be classified by the conformal equivalence
relation. Conformal invariants, which are shape indices
that can be defined intrinsically on a surface, may
be used t...
ICCV
2007
IEEE
14 years 7 months ago
2007
IEEE
Ricci flow is a powerful curvature flow method in geometric analysis. This work is the first application of surface Ricci flow in computer vision. We show that previous methods ba...
PAMI
2006
13 years 5 months ago
2006
In this paper, we present a generative sketch model for human hair analysis and synthesis. We treat hair images as 2D piecewisely smooth vector (flow) fields, and thus our represe...