3G网络中移动视频质量评估模型的研究  

Study on Quality Assessment Model for Mobile Videos over 3G Network

作　　者：陈希宏[1] 金跃辉[1] 杨谈[1,2] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室,北京100876 [2]北京邮电大学软件学院,北京100876

出　　处：《计算机科学》2015年第9期86-93,共8页Computer Science

基　　金：国家863项目(2011AA01A102);国家973项目(2009CB320505);中央高校基本科研业务费专项资金(2014RC0501)资助

摘　　要：随着3G网络技术的不断发展和广泛应用,移动视频业务比以往更受用户的关注。与传统的有线网络视频业务相比,移动视频的传输条件不太稳定,更容易产生误码;移动终端的视频播放性能更容易受到设备硬件的限制,这就要求有更适合移动终端的视频编码方式。此外,不同类型的视频内容、用户的兴趣爱好等因素也会对用户观看视频的体验产生不同的影响。以上因素给移动视频服务提供商在业务质量的评估以及用户体验的提升方面提出了巨大的挑战。目前在移动视频质量评估的研究中,主要采用基于服务质量(Quality of Service,QoS)的评价方法,但是这些方法没有考虑用户主观体验参与在内的诸多因素,因此并不是一种非常有效的评价方法。针对影响移动视频用户体验质量的主客观因素,研究了无线参数、终端设备参数和视频编码参数对移动视频质量的影响,提出了基于用户体验质量(Quality of Experience,QoE)的视频质量评价方法。With the rapid development of 3rd generation network technology, the mobile video service has attracted more attention of the mobile users than ever. Compared to the traditional cable network video servi-ce, mobile video service is more sensitive to the transport condition and there can be more probabilities of bit error. And the performance of mo- bile video is limit to the configuration of mobile devices ＇ hardware, which means it＇s necessary to choose an appropriate way to encode video for mobile videos. Besides, some other factors can affect the quality of user experience for mobile videos as well, such as video contents, user＇s interests and so on. All these factors make it difficult for the mobile video service providers to evaluate the quality for mobile videos, as well as leading to an improvement of the mobile video ex- perience for users. At present,most of the researches on assessment of video quality depend on quality of service. But it is not an effective method, because this method doesn＇t take the factors of user experience into consideration. Therefore we proposed a new subjective assessment of quality for mobile video, and in the research we adopted a user intervention approach when collecting data and focusing on user experience in order to achieve scientific and effective strategies to e- valuate the quality for mobile video service.

关 键 词：移动视频质量 用户体验质量 主观评价 层次分析法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]