Fine-granularity-scalability for wireless video and scalable storage

Mihaela van der Schaar; J. Meehan

doi:10.1117/12.453124

4 January 2002 Fine-granularity-scalability for wireless video and scalable storage

Mihaela van der Schaar, J. Meehan

Proceedings Volume 4671, Visual Communications and Image Processing 2002; (2002) https://doi.org/10.1117/12.453124
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

Fine-Granularity-Scalability (FGS) has recently been adopted as the MPEG-4 standard for the efficient and flexible distribution of multimedia over the Internet. The FGS framework allows spatio-temporal-SNR tradeoffs in real-time (not limited to encoding time) at transmission or (post-) processing time, depending upon the available bit-rate, sequence characteristics, priority, user preferences or receiver resources. This paper discusses the versatility of FGS and how it can be used to great advantage in a variety of application domains beyond Internet video streaming, such as robust wireless video transmission and flexible scalable storage. In particular, the focus is on investigating the use of FGS for enabling the Universal Media Access (UMA) paradigm for wireless networks. To cope with detrimental channel conditions, we use several joint source-channel coding schemes for wireless transmission, termed Robust FGS (RFGS). RFGS exploits the FGS property of compressing video data in a set of multi-priority streams, based on the channel characteristics and terminal capabilities, by adapting the channel coding. Our results show that RFGS can provide graceful adaptability to varying network conditions while also offering additional benefits such as flexible Quality-of Service (QoS) management and channel adaptation and allocation. Moreover, the use of FGS for scalable storage of video content in gateways and in-home centralized storage units is also investigated. The results show that the proposed scalable method allows storing ten times or more video data on the same storage device depending on the desired guaranteed minimum quality level.

Citation Download Citation

Mihaela van der Schaar and J. Meehan "Fine-granularity-scalability for wireless video and scalable storage", Proc. SPIE 4671, Visual Communications and Image Processing 2002, (4 January 2002); https://doi.org/10.1117/12.453124

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