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Rate-Distortion Optimized Video Coding Using Automatic Sprites

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4 Author(s)
Krutz, A. ; Commun. Syst. Group, Tech. Univ. of Berlin, Berlin, Germany ; Glantz, A. ; Frater, M. ; Sikora, T.

Object-based video coding has been of interest for many years. Recent work by the authors has shown that a video coding system using background Sprites with automatic segmentation and background subtraction can indeed perform better than the H.264/AVC coder. In this paper, we extend this work by developing a rate-distortion optimization approach for an object-based coder. A key issue addressed by this approach is the joint choice of quantization parameters for the foreground and background. The performance of the resulting rate-distortion-optimized coder is far superior to that of H.264/AVC for source material with dominant global motion, across a range of bit rates.

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Selected Topics in Signal Processing, IEEE Journal of  (Volume:5 ,  Issue: 7 )