Abstract
The brand-new SP-frame in H.264 facilitates drift-free bitstream switching. Notwithstanding the guarantee of seamless switching, the cost is the bulky size of secondary SP-frames. This induces a significant amount of additional space or bandwidth for storage or transmission. In this paper, our investigation reveals that the size of secondary SP-frames is more severe when the correlation between the two bitstreams becomes smaller. Examples include viewpoint switching in multiview video and bitstream switching in single-view video with complex motion. For this reason, a new motion estimation and compensation technique, which is operated in the quantized-transform (QDCT) domain, is designed for coding secondary SP-frames. Our proposed work aims at keeping the secondary SP-frames as small as possible without affecting the size of primary SP-frames by incorporating QDCT-domain motion estimation and compensation in the secondary SP-frame coding. Simulation results show our proposed scheme overwhelmingly outperforms the conventional pixel-domain motion estimation technique. As a consequence, the size of secondary SP-frames can be reduced remarkably, especially in multiview video and single-view video with complex motion.
Original language | English |
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Article number | 5308416 |
Pages (from-to) | 365-381 |
Number of pages | 17 |
Journal | IEEE Transactions on Circuits and Systems for Video Technology |
Volume | 20 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Mar 2010 |
Keywords
- Bitstream switching
- Motion estimation
- Multiview video
- QDCT domain
- SP-frame
- Viewpoint switching
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Media Technology