Effects of compression parameters on the perceived quality of video stream over a lossy Internet protocol network

作     者：Hadar, Ofer Shmueli, Ron Huber, Revital Huber, Merav 

作者机构：Ben Gurion Univ Negev Commun Syst Engn Dept IL-84105 Beer Sheva Israel Ben Gurion Univ Negev Dept Elect & Comp Engn IL-84105 Beer Sheva Israel 

出 版 物：《OPTICAL ENGINEERING》 (光学工程)

年 卷 期：2006年第45卷第8期

页      面：087003-1-087003页

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 0702[理学-物理学] 

基　　金：Israeli Chief Scientist  Ministry of Trade and Industry  Israel 

主　　题：Motion Picture Experts Group subjective tests quality of service compression encoding scheme Internet protocol perceived quality packet loss ratio 

摘      要：We analyze the connection between viewer-perceived quality and encoding schemes. The encoding schemes depend on transmission bit-rate, MPEG compression depth, frame size and frame rate in a constant bit-rate (CBR) video transmission of a MPEG-2 video sequence. The compressed video sequence is transmitted over a lossy communication network with quality of service (QoS) and a certain Internet (IP) loss model. On the end-user side, viewer-perceived quality depends on changes in the network conditions, the video compression, and the video content complexity. We demonstrate that, when jointly considering the impact of coding bit rate, packet loss, and video complexity, there is an optimal encoding scheme, which also depends on the video content. We use a set of subjective tests to demonstrate that this optimal encoding scheme maximizes the viewer-perceived quality. (c) 2006 Society of Photo-Optical Instrumentation Engineers.