Result: Improved MPEG-4 visual texture coding using perceptual dithering for transparent image coding

Title:
Improved MPEG-4 visual texture coding using perceptual dithering for transparent image coding
Authors:
WANG, Chung-Neng, LIU, Chi-Min, TIHAO CHIANG
Source:
Advances in multimedia information processing - PCM 2001 (Beijing, 24-26 October 2001)Lecture notes in computer science. 2195:134-141
Publisher Information:
Berlin: Springer, 2001.
Publication Year:
2001
Physical Description:
print, 6 ref
Original Material:
INIST-CNRS
Subject Terms:
Documentation, Computer science, Informatique, Sciences exactes et technologie, Exact sciences and technology, Sciences appliquees, Applied sciences, Informatique; automatique theorique; systemes, Computer science; control theory; systems, Intelligence artificielle, Artificial intelligence, Reconnaissance des formes. Traitement numérique des images. Géométrie algorithmique, Pattern recognition. Digital image processing. Computational geometry, Telecommunications et theorie de l'information, Telecommunications and information theory, Théorie de l'information, du signal et des communications, Information, signal and communications theory, Théorie du signal et des communications, Signal and communications theory, Codage, codes, Coding, codes, Codage image, Image coding, Perception visuelle, Visual perception, Percepción visual, Texture image, Image texture, MPEG-4, Perceptual dithering coding, Visual texture coding
Document Type:
Conference Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Dept. and Institute of Computer Science and Information Engineering, National Chiao Tung University, Hsinchu, 30050, Tawain, Province of China
Dept. and Institute of Electronics Engineering, National Chiao Tung University (NCTU), Hsinchu, 30050, Tawain, Province of China
ISSN:
0302-9743
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=14044647
Rights:
Copyright 2002 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Computer science; theoretical automation; systems

Telecommunications and information theory

FRANCIS
Accession Number:
edscal.14044647
Database:
PASCAL Archive

Further Information

MPEG-4 VTC provides coding efficiency using the zerotree entropy coding (ZTC) to remove the statistical redundancy among the coefficients within each wavelet tree. To improve the coding efficiency of ZTC, we propose an MPEG-4 compliant perceptual dithering coding (PDC) approach. In the ZTC technique, there is a parent-children relationship within each wavelet tree while the redundancy among the sibling nodes of different spatial orientations at the same frequency level is not exploited. The PDC approach perturbs the magnitudes of the sibling nodes for each wavelet tree according to the statistical distribution of AC coefficients within the subband at the same frequency level to achieve more energy compaction. The level of perturbation of each wavelet coefficient is constrained by the noise tolerance levels according to the perception model. For the same visual quality, we found that the PDC approach achieves bit savings over MPEG-4 VTC by 11∼30%.