Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Combined scalability support for the scalable extension of H.264/AVC

: Schwarz, H.; Marpe, D.; Schierl, T.; Wiegand, T.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Conference on Multimedia and Expo, ICME 2005. Vol.1 : July 6 - 8, 2005, Amsterdam, the Netherlands
Piscataway, NJ: IEEE, 2005
ISBN: 0-7803-9331-7
International Conference on Multimedia and Expo (ICME) <2005, Amsterdam>
Fraunhofer HHI ()
code standards; data compression; spatiotemporal phenomena; video coding

The scalability extension of H.264/AVC (H. Schwarz, et al., 2004) uses a layered approach for providing spatial, temporal, and SNR scalability. Due to this concept, only a restricted set of spatio-temporal-SNR points can be extracted and decoded from a global scalable bit-stream, and this set of points is defined by the chosen encoder configuration. In this paper, we present a new approach for providing flexible combined spatial, temporal, and SNR scalability. The increased flexibility is achieved by introducing NAL units that represent a refinement signal for a picture in a coarse-to-fine-description and can be truncated at any arbitrary point. The simulation results show that this approach is capable of providing flexible combined scalability while the coding efficiency is only slightly worse than that of the layered approach.