Sciweavers

ICPR
2002
IEEE
14 years 5 months ago
On the Performance of Wavelets for Handwritten Numerals Recognition
This paper validates a recognition system using bidimensional wavelet transforms as feature extractor and investigates the relevance of each subband image in the recognition proce...
João Marques de Carvalho, Robert Sabourin, ...
ICIP
1998
IEEE
14 years 6 months ago
Adaptive Wavelet Packet Image Coding using an Estimation-Quantization Framework
In this paper, we extend the statistical model-based Estimation-Quantization (EQ) wavelet image coding algorithm introduced in [?] to include an adaptive transform component. For ...
Kannan Ramchandran, Mehmet Kivanç Mih&ccedi...
ICIP
1999
IEEE
14 years 6 months ago
On Zerotree Quantization for Embedded Wavelet Packet Image Coding
Wavelet packets are an effective representation tool for adaptive waveform analysis of a given signal. We first combine the wavelet packet representation with zerotree quantizatio...
François G. Meyer, Nasir Rajpoot, Roland G....
ICIP
2000
IEEE
14 years 6 months ago
A Wavelet-Based Image Denoising Technique Using Spatial Priors
We propose a new wavelet-based method for im age denoising that applies the Bayesian framework, using prior knowledge about the spatial clustering of the wavelet coefficients. Loc...
Aleksandra Pizurica, Wilfried Philips, Ignace Lema...
ICIP
2000
IEEE
14 years 6 months ago
Design and Analysis of a Forward-Adaptive Wavelet Image Coder
We introduce a new wavelet image coder which is the forward-adaptive counterpart of the state-of-the-art backward-adaptive Estimation-Quantization coder. The variance field associ...
Anthony F. Docimo, Kannan Ramchandran, Mehmet Kiva...
ICIP
2000
IEEE
14 years 6 months ago
Spatially Adaptive Image Denoising Under OverComplete Expansion
This paper presents a novel wavelet-based image denoising algorithm under overcomplete expansion. In order to optimize the denoising performance, we make a systematic study of bot...
Xin Li, Michael T. Orchard
ICIP
2001
IEEE
14 years 6 months ago
A directional, shift insensitive, low-redundancy, wavelet transform
Shift variance and poor directional selectivity, two major disadvantages of the discrete wavelet transform, have previously been circumvented either by using highly redundant, non...
Rutger L. van Spaendonck, Felix C. A. Fernandes, S...
ICIP
2001
IEEE
14 years 6 months ago
All-phase motion compensated prediction in the wavelet domain for high performance video coding
This paper presents a novel framework of motion compensated pre&ction(MCP) techniques in the wavelet domain for high performance video coding. Our analysis reveals fundamental...
Xin Li, Louis Kerofsky, Shawmin Lei
ICIP
2002
IEEE
14 years 6 months ago
Rate-distortion optimized image compression using wedgelets
Most wavelet-based image coders fail to model the joint coherent behavior of wavelet coefficients near edges. Wedgelets offer a convenient parameterization for the edges in an ima...
Justin K. Romberg, Michael B. Wakin, Hyeokho Choi,...
ICIP
2002
IEEE
14 years 6 months ago
Multiresolution 3D mesh compression
In this paper, we propose an efficient low complexity compression scheme for densely sampled irregular 3D meshes. This scheme is based on 3D multiresolution analysis (3D Discrete ...
Frédéric Payan, Marc Antonini