On optimal entropy-constrained deadzone quantization

Authors
Citation
B. Tao, On optimal entropy-constrained deadzone quantization, IEEE CIR SV, 11(4), 2001, pp. 560-563
Citations number
8
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY
ISSN journal
10518215 → ACNP
Volume
11
Issue
4
Year of publication
2001
Pages
560 - 563
Database
ISI
SICI code
1051-8215(200104)11:4<560:OOEDQ>2.0.ZU;2-V
Abstract
This paper studies entropy-constrained deadzone quantizer design. It first shows that for symmetric uni-modal distributions, the entropy of the quanti zed output is a monotonic decreasing function of the outer bin-width of the deadzone quantizer. Based on this result, a fast algorithm is introduced f or optimal entropy-constrained deadzone quantizer design. As experimental r esults, we give the optimal zero bin-width and outer bin-width for several generalized Gaussian distributions that are often used to model ac coeffici ent distributions in image and video transform coding.