Temporal Video Transcoding Based on Frame Complexity Analysis for Mobile Video Communication

作     者：Yeh, Chia-Hung Jiang, Shu-Jhen Fan Lin, Chih-Yang Chen, Mei-Juan 

作者机构：Natl Sun Yat Sen Univ Dept Elect Engn Kaohsiung 80424 Taiwan Asia Univ Dept Comp Sci & Informat Engn Taichung 41354 Taiwan Natl Dong Hwa Univ Dept Elect Engn Hualien 97401 Taiwan 

出 版 物：《IEEE TRANSACTIONS ON BROADCASTING》 (IEEE Trans Broadcast)

年 卷 期：2013年第59卷第1期

页      面：38-46页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：National Science Council of the Republic of China [NSC99-2628-E-110-008-MY3  NSC101-2221-E-110-093-MY2] 

主　　题：Frame complexity frame selection temporal coherence temporal transcoding video quality assessment video transcoding visual complexity 

摘      要：Mobile communication systems provide more kinds of advanced video services. One of the most significant problems of mobile video communication is to adapt video content to different network characteristics, which is critical to acceptable visual quality of the transmitted videos. This paper proposes a frame selection scheme for temporal video transcoding through frame complexity analysis that consists of visual complexity and temporal coherence. Visual complexity represents the importance of frames and temporal coherence reveals the consequences of frame skipping;both of these two features are good indicators to determine if a frame should be kept. Experimental results show that our proposed method achieves higher visual quality and has more encoded frames than other existing schemes in the same bitrate, which means that our proposed method achieves high accuracy in selecting the representative frames for temporal video transcoding. The proposed method also has better video quality assessment scores than that of other existing methods, which means the proposed method keeps higher level of integrity of the transcoded videos.