Translator Disclaimer
1 September 2008 Region-of-interest-based video transcoding from MPEG-2 to H.264 in the compressed domain
Author Affiliations +
Abstract
A new MPEG-2-to-H.264 video transcoding algorithm based on regions of interest (ROIs) is proposed. The whole transcoding scheme, including the ROI detection, is applied in the compressed domain to alleviate the computational load. The ROI detection uses the motion information from the partially decoded MPEG-2 bitstream. Then the ROIs that are likely to attract the viewer's attention are transcoded with drift compensation to provide better quality, while other regions are transcoded without drift compensation to save computational complexity. Experimental results show that our algorithm provides a better trade-off between computational complexity and picture quality. It achieves a speedup of 2 times over the closed-loop transcoding algorithm in the compressed domain, while giving comparable visual quality.
©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)
Rong Xie and Songyu Yu "Region-of-interest-based video transcoding from MPEG-2 to H.264 in the compressed domain," Optical Engineering 47(9), 097001 (1 September 2008). https://doi.org/10.1117/1.2976797
Published: 1 September 2008
JOURNAL ARTICLE
7 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Low-power H.264 video decoder with graceful degradation
Proceedings of SPIE (January 18 2004)
MPEG recompression detection based on block artifacts
Proceedings of SPIE (March 18 2008)
MPEG-4 for DTV
Proceedings of SPIE (December 21 1998)

Back to Top