Sciweavers

134 search results - page 12 / 27
» Data hiding using trellis coded quantization
Sort
View
SIPS
2008
IEEE
14 years 1 months ago
Unified decoder architecture for LDPC/turbo codes
Low-density parity-check (LDPC) codes on par with convolutional turbo codes (CTC) are two of the most powerful error correction codes known to perform very close to the Shannon li...
Yang Sun, Joseph R. Cavallaro
DCC
2000
IEEE
13 years 11 months ago
RD-Optimization of Hierarchical Structured Adaptive Vector Quantization for Video Coding
This paper contains two contributions to very-low-bitrate video coding. First, we show that in contrast to common practice incremental techniques for rate-distortion optimization ...
Marcel Wagner, Dietmar Saupe
ICDE
1995
IEEE
98views Database» more  ICDE 1995»
14 years 8 months ago
Relational Database Compression Using Augmented Vector Quantization
Data compression is one way to alleviate the 1/0bottleneck problem faced by I/O-intensive applications such as databases. However, this approach is not widely used because of the ...
Wee Keong Ng, Chinya V. Ravishankar
ICASSP
2008
IEEE
14 years 1 months ago
Model-based sparsity projection pursuit for lattice vector quantization
In this work we present an efficient coding scheme suitable for lossy image compression using a lattice vector quantizer (LVQ) based on statistically independent data projections...
Leonardo H. Fonteles, Marc Antonini, Ronald Phlypo
ICMCS
2005
IEEE
77views Multimedia» more  ICMCS 2005»
14 years 1 months ago
Rewritable Data Embedding on MPEG Coded Data Domain
In this paper, we propose a rewritable data embedding scheme on MPEG coded data domain for content managements including DRM, content controlling and indexing. Data embedding is p...
Katsuhiro Nakajima, Kiyoshi Tanaka, Tetsuya Matsuo...