REDUCING BLOCKING ARTIFACTS WITHIN VECTOR QUANTIZATION ALGORITHMS

Citation
Ma. Robers et Ak. Katsaggelos, REDUCING BLOCKING ARTIFACTS WITHIN VECTOR QUANTIZATION ALGORITHMS, IEEE transactions on consumer electronics, 43(4), 1997, pp. 1118-1123
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Telecommunications,"Engineering, Eletrical & Electronic
ISSN journal
0098-3063
Volume
43
Issue
4
Year of publication
1997
Pages
1118 - 1123
Database
ISI
SICI code
0098-3063(1997)43:4<1118:RBAWVQ>2.0.ZU;2-J
Abstract
Vector quantization (VQ) provides a fast, low-power image compression technique for video communication products. However, since VQ techniqu es operate on each block of the image separately, they have been criti cized for producing visually-disturbing blocking artifacts, especially at low bitrates. In this paper, we present a VQ technique which uses hexagonally-shaped vectors to greatly reduce blocking artifacts. The e ffectiveness of the technique is demonstrated experimentally.