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ICMCS
2006
IEEE

Optimizing Algorithms for Region-of-Interest Video Compression, with Application to Mobile Telehealth

8 years 11 months ago
Optimizing Algorithms for Region-of-Interest Video Compression, with Application to Mobile Telehealth
Wireless communication of video poses constraints on information capacity. Region-of-Interest (ROI) video coding provides higher quality in the ROI, but poorer quality in the background (BKGRND), for a given total bitrate (TBR). Researchers, including the authors, have also proposed more graceful quality management methods, using what is referred to here as an Extended-Region-of-Interest (EROI). We consider three levels of losslessness – mathematical, diagnostic, and perceptual, with the goal of associating them with the above-mentioned regions. We describe work in progress aimed at optimizing an elastic expert system based on the above methodology, with telehealth video as its anchor. The optimizations are threefold – user, perceptual, and network oriented, and are incorporated in the rate control algorithm. We propose a rate control method where, unlike conventional methods, bit allocation is shifted from the frame level to individual regions within the frame. Thereafter, the ab...
Sira Rao, Nikil Jayant
Added 11 Jun 2010
Updated 11 Jun 2010
Type Conference
Year 2006
Where ICMCS
Authors Sira Rao, Nikil Jayant
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