摘要： 针对实时测量和评估IPTV视频质量的迫切需求以及当前主要商用测量方案的不足，通过分析影响IPTV视频质量的主要因素，提出以MPQM模型为评估基础，综合运用Markov模型分别为网络信息包丢失概率、图像复杂程度以及视频流传输位速率进行建模和评测的实时评估算法，并依据所建模型推导出相关估算公式。商用测试结果表明该算法能够在实时环境中较准确地评估IPTV视频质量。
关键词:
网络电视,
视频质量,
MPQM模型,
Markov模型
Abstract: To meet the urgent needs of measurement and evaluation for IPTV video quality in real-time and respond to the deficiencies of current major commercial measurement solutions, a new real-time IPTV video quality evaluation algorithm is proposed through the analysis of the main factors, which greatly impacts the video quality. This new real-time evaluation algorithm is based on the MPQM model, and the Markov model is also used to model and calculate the network packet loss rate, image complexity and video stream bit rate, and related evaluation equations are deduced for the model. Commercial test results indicate that this algorithm can accurately evaluate the IPTV video quality in real-time.
Key words:
IPTV,
video quality,
MPQM(Moving Picture Quality Metric) model,
Markov model
中图分类号:
王 伟;王贞松. 基于MPQM模型的IPTV视频质量实时评估算法[J]. 计算机工程, 2008, 34(6): 233-236.
WANG Wei; WANG Zhen-song. Real-time IPTV Video Quality Evaluation Algorithm Based on MPQM Model[J]. Computer Engineering, 2008, 34(6): 233-236.