1987 search results - page 4 / 398 » Directional filtering transform |
ICIP
2008
IEEE
14 years 7 months ago
2008
IEEE
In this paper, an effective multiresolution image representation using the combination of 2D quincunx filter bank (FB) and directional wavelet transform (WT) is presented. The pro...
MVA
2002
13 years 5 months ago
2002
Anew method to extract retinal blood vessels from a colour fundus image is described. Digital colour h d u s images are contrast enhanced in order to obtain sharp edges. The green...
ICIP
2003
IEEE
14 years 7 months ago
2003
IEEE
Inthispaper we formulatethe Radon transform asa wnvolution integral over the Euclidean motion group (SE(2)) and provideaminimummeansquare error(MMSE) stochastic deconvolution meth...
ICIP
2005
IEEE
14 years 7 months ago
2005
IEEE
We present the nonsubsampled contourlet transform and its application in image enhancement. The nonsubsampled contourlet transform is built upon nonsubsampled pyramids and nonsubs...
ICIP
2004
IEEE
14 years 7 months ago
2004
IEEE
Using the concepts of two-dimensional Hilbert transform and analytic signal, we construct a new quaternion wavelet transform (QWT). The QWT forms a tight frame and can be efficien...