Research on correlation noise modeling of a generalized Gamma distribution in distributed coding

Autor:	Jie-ping LIU, Qin-ling WANG, Yue-sheng HE, Gang WEI
Jazyk:	čínština
Rok vydání:	2016
Předmět:	distributed video coding correlation noise model generalized Gamma distribution Laplacian distribution Telecommunication TK5101-6720
Zdroj:	Tongxin xuebao, Vol 37, Pp 33-39 (2016)
Druh dokumentu:	article
ISSN:	1000-436X 10981179
DOI:	10.11959/j.issn.1000-436x.2016050
Popis:	Due to the inaccuracy of modeling the correlated noise (CN) with Laplacian distribution,the rate-distortion performance of DVC is relatively low.CN modeling via generalized Gamma (GGA)distribution was proposed for pix-el-domain DVC.Statistical features of the CN modeling were analyzed.It was found that Laplacian distribution peak was lower than actual CN distribution.GGA distribution was exploited to fit CN and the GGA distribution parameters were estimated online.The simulation results indicate that the proposed model can more accurately reflect the statistics fea-tures of CN,improve rate distortion performance,and reduce computation complexity.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/d856a148f20d4e74bba109811790b7f3 Zobrazit plný text záznamu View record in DOAJ