46 search results - page 5 / 10 » Adaptive Directional Wavelet Transform Using Pre-directional... |
ICIP
2009
IEEE
13 years 5 months ago
2009
IEEE
This article introduces a best basis search algorithm in a nonstationary (NS) wavelet packets dictionary. It computes an optimized labeled quad-tree that indexes the filters used ...
TSP
2008
13 years 7 months ago
2008
The two-band discrete wavelet transform (DWT) provides an octave-band analysis in the frequency domain, but this might not be "optimal" for a given signal. The discrete w...
TMI
2008
13 years 7 months ago
2008
In this article, we propose an automatic method to detect microaneurysms in retina photographs. Microaneurysms are the most frequent and usually the first lesions to appear as a co...
DCC
2010
IEEE
14 years 2 months ago
2010
IEEE
Block-based random image sampling is coupled with a projectiondriven compressed-sensing recovery that encourages sparsity in the domain of directional transforms simultaneously wi...
IJCV
2007
13 years 7 months ago
2007
Abstract. Inspired by the early visual system of many mammalians we consider the construction of-and reconstruction from- an orientation score Uf : R2 ×S1 → C as a local orienta...