Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30089
Title: Quantized transform-domain motion estimation for sp-frame coding in viewpoint switching of multiview video
Authors: Lai, KK
Chan, YL 
Siu, WC 
Keywords: Bitstream switching
Motion estimation
Multiview video
QDCT domain
SP-frame
Viewpoint switching
Issue Date: 2010
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on circuits and systems for video technology, 2010, v. 20, no. 3, 5308416, p. 365-381 How to cite?
Journal: IEEE transactions on circuits and systems for video technology 
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.
URI: http://hdl.handle.net/10397/30089
ISSN: 1051-8215
EISSN: 1558-2205
DOI: 10.1109/TCSVT.2009.2035835
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