ICASSP
2010
IEEE
14 years 4 months ago
2010
IEEE
In this paper the two main definitions of quaternion properness (or second order circularity) are reviewed, showing their connection with the structure of the optimal quaternion ...
CVPR
2005
IEEE
15 years 6 months ago
2005
IEEE
Natural images are approximately scale invariant resulting in long range statistical regularities that typically obey a power law. For example, images have considerable regularity...