FGS+: optimizing the joint SNR-temporal video quality in MPEG-4 fine grained scalable coding

To enable video transmission over heterogeneous wireless networks, a highly scalable compression and streaming framework that can adapt to large and rapid bandwidth variations in realtime is necessary. MPEG-4 Fine Grained Scalability (FGS) provides fine-grained SNR and temporal scalabilities, but these scalabilities are implemented and performed independently, thereby neglecting the gains that can be made from making joint SNR-temporal decisions to maximize quality. In this paper, a novel Fine Grained SNR-Temporal scalability framework called FGS+ that provides a new level of performance by considering SNR and temporal scalability jointly is presented. This new solution uses the results of our subjective tests, which indicate the levels to which SNR-quality needs to be enhanced before motion-smoothness should be improved. The study also reveals that these SNRtemporal tradeoff points vary among videos, and depend on the characteristics of the video. Based on these observations, our sol...

• Type: Conference
• Year: 2002
• Where: ISCAS
• Authors: Raj Kumar Rajendran, Mihaela van der Schaar, Shih-Fu Chang
• Keywords: Fine Grained Scalability, Grained SNR-Temporal Scalability, Hardware, Heterogeneous Wireless Networks, ISCAS 2002