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» Directional filtering transform
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ICIP
2005
IEEE
14 years 9 months ago
Homogeneity-based directional sigma filtering of video noise
This paper proposes a real-time method for the reduction of white Gaussian video noise. The method achieves a maximum gain of 4.8 dB and is capable of preserving image content. It...
Mohammed Ghazal, Aishy Amer, Ali Ghrayeb
DCC
2008
IEEE
14 years 7 months ago
Directional Lapped Transforms for Image Coding
This paper presents a scheme to design directional lapped transforms. Lapped transforms can be factorized into lifting steps. By introducing directional operator into each lifting...
Jizheng Xu, Feng Wu, Jie Liang, Wenjun Zhang
ICIAP
2005
ACM
14 years 7 months ago
Security Enhancement of Visual Hashes Through Key Dependent Wavelet Transformations
Parameterized wavelet filters and wavelet packet subband structures are discussed to be used as key dependent wavelet transforms in order to enhance the security of wavelet based h...
Albert Meixner, Andreas Uhl
CORR
2010
Springer
255views Education» more  CORR 2010»
13 years 6 months ago
Multiplierless Modules for Forward and Backward Integer Wavelet Transform
: This article is about the architecture of a wavelet filter bank with reprogrammable logic. It is based on second generation of wavelets with a reduced of number of operations. A ...
Vasil Kolev
ICIP
2005
IEEE
14 years 9 months ago
Discrete bandelets with geometric orthogonal filters
This paper describes the construction of second generation bandelet orthogonal bases. The decomposition on a bandelet basis is computed using a wavelet filter bank followed by ada...
Gabriel Peyré, Stéphane Mallat