TEMPORAL OPTIMIZATION OF QUALITY DURING VIDEO COMPRESSION

被引：0
作者：
Gaitanis, Kosta [1 ]
Al Chikham, Samer Youssef [1 ]
de Vleeschouwer, Christophe [1 ]
机构：
[1] Catholic Univ Louvain, Lab TELE, Ecole Polytech Louvain, Louvain, Belgium
来源：
QOMEX: 2009 INTERNATIONAL WORKSHOP ON QUALITY OF MULTIMEDIA EXPERIENCE | 2009年
关键词：
Video Quality Measure; Compression; Subjective Quality; Lagrangian Resource Allocation; User experience;
D O I：
10.1109/QOMEX.2009.5246945
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Recent VQM developments have provided a set of methods for evaluating the relative subjective quality of a treated video segment compared to the original video In this paper we intend to optimize the subjective quality of multi-segment video sequence for a given global bitrate constraint, by adjusting sonic basic compression parameters such as the Quantization Parameter, the frame rate and the image size along the video sequence An optimal resource allocation algorithm has been designed to efficiently allocate the global video bit-budget to the different shots (i e segments), depending on the content of shots, by using 2 different optimizing criteria. maximize the minimum perceived quality over the sequence of shots, and maximize the average perceived quality over the sequence We have studied the impact of such an approach on more than 800 shots extracted from 15 videos of different content
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页码：233 / 237
页数：5
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