A study of high-qualityInternet broadcasting using video contents

利用视频内容进行高质量网络广播的研究

• 批准号: 17500034
• 负责人: KATO Yuka
• 金额: $ 1.86万
• 依托单位: Advanced Institute of Industrial Technology (2006)The University of Electro-Communications (2005)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17500034/
• 关键词: Advanced Internet; Information Systems; Computer Networks; Video Quality

The goal of this study is to provide high-quality Internet broadcasting using video content. For this purpose, I proposed a rate control method for streaming services with reference to video content, which control targets are spatial resolution, time resolution and frame size. In this study, I classified video programs into some groups in which large majority of users feel the same video quality, and analyzed factors (quality parameters) affecting subjective video quality. In addition, I applied the analysis results to an actual encoding system and demonstrated the implementation process of the proposed method on practical streaming servers. In this study, I obtained the following three results.1. Video program classification for Internet broadcasting :I conducted subjective assessments for 28 subjects using various types of 30 video programs, and proposed a method of classifying video programs into 6 groups. The classification method users feature description parameters which are the combination of semantic parameters (e.g. the importance of voice) and vision parameters (e.g. degree of motion intensity).2. Designing a control algorithm of transmission rate :I expressed the relationship between the subjective quality value of each group and the quality parameter values as an equation by multiple linear regression analysis, and designed a quality control algorithm using the equations. Efficient quality control can be achieved by selecting parameter values that maximize the subjective quality value under constraints.3. Applying the method to an actual encoding system :I used TMPGEnc (that is an MPEG-1 encoder) as an actual encoding system, and obtained the constraint for the proposed control algorithm. In this case, I adopted encoding bit-rate as the cost function (the constraint), and proposed a control method maximizing the subjective quality value under the constraint.

这项研究的目的是使用视频内容提供高质量的互联网广播。为此，我提出了一种用于流媒体服务的费率控制方法，参考视频内容，哪些控制目标是空间分辨率，时间分辨率和框架尺寸。在这项研究中，我将视频程序分为某些组，其中大多数用户感受到相同的视频质量，并分析了影响主观视频质量的因素（质量参数）。此外，我将分析结果应用于实际的编码系统，并证明了在实际流媒体服务器上提出的方法的实现过程。在这项研究中，我获得了以下三个结果1。互联网广播的视频程序分类：我使用30种视频程序对28个受试者进行了主观评估，并提出了一种将视频程序分类为6组的方法。分类方法用户功能描述参数是语义参数的组合（例如语音的重要性）和视觉参数（例如，运动强度程度）.2。设计传输速率的控制算法：我通过多个线性回归分析来表示每个组的主观质量值与质量参数值作为方程之间的关系，并使用方程式设计了质量控制算法。可以通过选择最大化约束下主观质量值的参数值来实现有效的质量控制。3。将方法应用于实际编码系统：我使用tmpgenc（即MPEG-1编码器）作为实际的编码系统，并获得了对拟议的控制算法的约束。在这种情况下，我采用编码比特量作为成本函数（约束），并提出了一种控制方法，以最大化约束下的主观质量值。

项目成果

A Video Classification Method using User Perceptive Video Quality

• 发表时间: 2006-02
• 作者: Y. Kato;K. Hakozaki

A video classification method using relationship between video contents and subjective video quality for user-oriented streaming services

一种利用视频内容与主观视频质量之间关系的面向用户的流媒体服务的视频分类方法

• 发表时间: 2005
• 期刊: IPSJ Symposium Series (DPSWS2005) Vol.2005, No.19
• 作者: Yuka Kato;Yu Miyajima;Katsuya Hakozaki
• 通讯作者: Katsuya Hakozaki

映像コンテンツとユーザの主観品質の関係を利用した映像配信システム

一种利用视频内容与用户主观质量之间关系的视频分发系统

• 发表时间: 2005
• 期刊: 情報処理学会DICOMO2005シンポジウム
• 作者: N. Inaba;K. Wada;宮島悠
• 通讯作者: 宮島悠

A streaming video system using relationship between video contents and user subjective video quality

一种利用视频内容与用户主观视频质量之间关系的流视频系统

• 发表时间: 2005
• 期刊: IPSJ Symposium Series (DICOMO2005) Vol.2005, No.6
• 作者: Yu Miyajima;Yuka Kato;Katsuya Hakozaki
• 通讯作者: Katsuya Hakozaki

A Video Classification Method for User-Centered Streaming Services

一种以用户为中心的流媒体服务的视频分类方法

• 发表时间: 2006
• 期刊: Proc. International Conferences on Signal Processing and Multimedia Applications (SIGMAP2006)
• 作者: T. Izumi;K. Wada;Yuka Kato
• 通讯作者: Yuka Kato