A new classified vector quantization based on quadtree

Authors
Jiang, K Zhang, QL
Citation
K. Jiang et Ql. Zhang, A new classified vector quantization based on quadtree, PROG NAT SC, 9(4), 1999, pp. 304-309
Citations number
12
Categorie Soggetti
Multidisciplinary
Journal title
PROGRESS IN NATURAL SCIENCE
ISSN journal
10020071 → ACNP
Volume
9
Issue
4
Year of publication
1999
Pages
304 - 309
Database
ISI
SICI code
1002-0071(199904)9:4<304:ANCVQB>2.0.ZU;2-X
Abstract
A new algorithm of classified vector quantization based on quadtree segment ation is proposed. It can obtain lower bit rate and overcome edge degradati on. Simulation results show that the better subjective image quality can al so be obtained when bitrate is lower than 0.25 bpp. Comparing with JPEG, th e improvement of the peak signal-to-noice ratio (PSNR) is up to 2 dB at the same bit rate.