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

被引：7

作者：

Hadar, Ofer ^{[1
]}

Shmueli, Ron

Huber, Revital

Huber, Merav

机构：

[1] Ben Gurion Univ Negev, Commun Syst Engn Dept, IL-84105 Beer Sheva, Israel

[2] Ben Gurion Univ Negev, Dept Elect & Comp Engn, IL-84105 Beer Sheva, Israel

来源：

OPTICAL ENGINEERING | 2006年 / 45卷 / 08期

关键词：

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

D O I：

10.1117/1.2338591

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

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.

引用

页数：14

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