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» On the Hilbert Transform of Wavelets
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APGV
2005
ACM
250views Visualization» more  APGV 2005»
14 years 1 months ago
A perceptual framework for contrast processing of high dynamic range images
Image processing often involves an image transformation into a domain that is better correlated with visual perception, such as the wavelet domain, image pyramids, multi-scale con...
Rafal Mantiuk, Karol Myszkowski, Hans-Peter Seidel
BIOID
2008
157views Biometrics» more  BIOID 2008»
13 years 9 months ago
Modeling Marginal Distributions of Gabor Coefficients: Application to Biometric Template Reduction
Abstract. Gabor filters have demonstrated their effectiveness in automatic face recognition. However, one drawback of Gabor-based face representations is the huge amount of data th...
Daniel González-Jiménez, José...
ICAI
2004
13 years 9 months ago
Use of Histogram Distances in Iris Authentication
Quantitatively establishing the discriminative power of iris biometric data is considered. Multi-level 2D wavelet transform has been widely used for iris verification system. Whil...
Seung-Seok Choi, Sungsoo Yoon, Sung-Hyuk Cha, Char...
CIMAGING
2009
145views Hardware» more  CIMAGING 2009»
13 years 8 months ago
Wavelet-based Poisson rate estimation using the Skellam distribution
Owing to the stochastic nature of discrete processes such as photon counts in imaging, real-world data measurements often exhibit heteroscedastic behavior. In particular, time ser...
Keigo Hirakawa, Farhan A. Baqai, Patrick J. Wolfe
CORR
2010
Springer
258views Education» more  CORR 2010»
13 years 7 months ago
Single Frame Image super Resolution using Learned Directionlets
In this paper, a new directionally adaptive, learning based, single image super resolution method using multiple direction wavelet transform, called Directionlets is presented. Th...
A. P. Reji, Tessamma Thomas