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113views more  JDCTA 2010»
11 years 10 hour ago
A Watermarking Algorithm Based on Block Energy Analysis of Wavelet Transform's Coefficients and Lorenz Chaotic Attractor
Perceptual transparency and robustness are conflicting requirements. To ensure the security of the watermarkhow to choose the embedding position and intensity is a difficult probl...
Xuelong Hu, Wei Tian, Yongai Zheng
189views more  IJACTAICIT 2010»
11 years 2 months ago
An Improved Algorithm for Data Hiding Using HH-subband Haar Wavelet Coefficients
This paper presents an improved adaptive algorithm for enhanced data hiding under HH-subband Haar Wavelet coefficients of a gray scale host image. The algorithm uses an optimal se...
Stuti Bazaj, Sachin Modi, Anand Mohan, S. P. Singh
11 years 3 months ago
Efficiency in Computing Correlation Matrix of Wavelet Coefficients by Exploiting Index Structure
Correlation matrices are ubiquitous throughout signal processing, networking and in many areas of science. However, our study of the literature found that there is limited research...
Claude Turner
88views more  CAGD 2005»
11 years 5 months ago
An efficient bit allocation for compressing normal meshes with an error-driven quantization
We propose a new wavelet compression algorithm based on the rate-distortion optimization for densely sampled triangular meshes. Exploiting the normal remesher of Guskov et al., th...
Frédéric Payan, Marc Antonini
96views more  CAGD 2005»
11 years 5 months ago
Single-knot wavelets for non-uniform B-splines
We propose a flexible and efficient wavelet construction for non-uniform B-spline curves and surfaces. The method allows to remove knots in arbitrary order minimizing the displace...
Martin Bertram
146views more  TIP 2008»
11 years 5 months ago
Image Modeling Using Interscale Phase Properties of Complex Wavelet Coefficients
This paper describes an approach to image modelling using interscale phase relationships of wavelet coefficients for use in image estimation applications. The method is based on th...
Mark Miller, Nick G. Kingsbury
205views more  TIP 2008»
11 years 5 months ago
Image Denoising Using Derotated Complex Wavelet Coefficients
A method for removing additive Gaussian noise from digital images is described. It is based on statistical modeling of the coefficients of a redundant, oriented, complex multiscale...
Mark Miller, Nick G. Kingsbury
104views more  EOR 2006»
11 years 5 months ago
A wavelet-based spectral procedure for steady-state simulation analysis
We develop WASSP, a wavelet-based spectral method for steady-state simulation analysis. First WASSP determines a batch size and a warm-up period beyond which the computed batch me...
Emily K. Lada, James R. Wilson
109views Education» more  CORR 2008»
11 years 5 months ago
Wavelet and Curvelet Moments for Image Classification: Application to Aggregate Mixture Grading
We show the potential for classifying images of mixtures of aggregate, based themselves on varying, albeit well-defined, sizes and shapes, in order to provide a far more effective...
Fionn Murtagh, Jean-Luc Starck
167views more  WSCG 2004»
11 years 6 months ago
Embedded Rate Scalable Wavelet-Based Image Coding Algorithm with RPSWS
This paper proposes an embedded rate scalable wavelet-based image coding algorithm. We introduce a simple and efficient approach for coding the positions and the signs of the wave...
Farag I. Y. Elnagahy, Boris Simák