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학술지 Switching Picture Added Scalable Video Coding and its Application for Video Streaming Adaptive to Dynamic Network Bandwidth
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Jie Jia, 김해광, 최해철
방송공학회논문지, v.13 no.1, pp.119-127
한국방송공학회 (KOSBE)
07MR2900, 통방융합 환경에서의 유비쿼터스 콘텐츠 서비스 기술 개발, 유정주
Transmission of video over Internet or wireless network requires coded stream capable of adapting to dynamic network conditions instantly. To meet this requirement, various scalable video coding schemes have been developed, among which the Scalable Video Coding (SVC) extension of the H.264/AVC is the most recent one. In comparison with the scalable profiles of previous video coding standards, the SVC achieves significant improvement on coding efficiency performance. For adapting to dynamic network bandwidth, the SVC employs inter-layer switching between different temporal, spatial or/and fidelity layers, which is currently supported with instantaneous decoding refresh (IDR) access unit. However, for real-time adaptability, the SVC has to frequently employ the IDR picture, which dramatically decreases the coding efficiency. Therefore, an extension of SP picture from the AVC to the SVC for an efficient inter-layer switching is investigated and presented in this paper. Simulations regarding the adaptability to dynamic network bandwidth are implemented. Results of experiment show that the SP picture added SVC provides an average 1.2 dB PSNR enhancement over the current SVC while providing similar adaptive functionality.
KSP 제안 키워드
Coding efficiency, Dynamic Network, Inter-layer, Network bandwidth, Real-Time, Scalable Video Coding, Wireless network, video coding standard, video streaming