@ARTICLE{1320Krutz2011,
	AUTHOR = {Andreas Krutz and Alexander Glantz and Michael Frater and Thomas Sikora},
	TITLE = {Rate-Distortion Optimized Video Coding using Automatic Sprites},
	JOURNAL = {IEEE Journal of Selected Topics in Signal Processing},
	YEAR = {2011},
	MONTH = nov,
	PAGES = {1309--1321},
	VOLUME = {5},
	NUMBER = {7},
	NOTE = {ISSN 1932-4553},
	DOI = {10.1109/JSTSP.2011.2166247},
	ABSTRACT = {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-distortionoptimized coder is far superior to that of H.264/AVC for source material with dominant global motion, across a range of bit rates.}
}