Sciweavers

1987 search results - page 38 / 398
» Directional filtering transform
Sort
View

Book
996views
16 years 11 months ago
The Scientist and Engineer's Guide to Digital Signal Processing
"The world of science and engineering is filled with signals: images from remote space probes, voltages generated by the heart and brain, radar and sonar echoes, seismic vibra...
Steve Smith
ICIP
2008
IEEE
15 years 8 months ago
AM-FM image filters
We introduce a multicomponent invertible AM-FM image transform and use it to define new nonlinear AM-FM filters for performing modulation domain image processing. The key elemen...
Chuong T. Nguyen, Joseph P. Havlicek
CALCO
2005
Springer
69views Mathematics» more  CALCO 2005»
15 years 7 months ago
From T-Coalgebras to Filter Structures and Transition Systems
Abstract. For any set-endofunctor T : Set → Set there exists a largest subcartesian transformation µ to the filter functor F : Set → Set. Thus we can associate with every T-c...
H. Peter Gumm
MMSEC
2005
ACM
210views Multimedia» more  MMSEC 2005»
15 years 7 months ago
Composite signature based watermarking for fingerprint authentication
Digital watermarking is a technology to hide information in digital media. We extend the digital watermarking technique Phasemark™, originally developed solely for image authent...
Farid Ahmed, Ira S. Moskowitz
CVPR
2003
IEEE
16 years 4 months ago
Direct 3D-Rotation Estimation from Spherical Images via a Generalized Shift Theorem
Omnidirectional images arising from 3D-motion of a camera contain persistent structures over a large variation of motions because of their large field of view. This persistence ma...
Ameesh Makadia, Kostas Daniilidis