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Proceedings Paper

Non-linear up-sampling for image coding in a spatial pyramid
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Paper Abstract

A locally adaptive up-sampling method that improves the efficiency of a spatially scalable representation of images in a spatial pyramid is presented. While linear methods use a globally optimized up-sampling filter design, the method presented locally switches between enhancement of significant structures and smoothing of flat regions that are dominated by noise. It is based on a locally adaptive Wiener filter expression that can be implemented by the bilateral filter. The performance of the method is assessed in a scenario resembling its possible use in MPEG's and ITU-T's joint current activity on scalable video coding (SVC).

Paper Details

Date Published: 29 January 2007
PDF: 12 pages
Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65082W (29 January 2007); doi: 10.1117/12.708208
Show Author Affiliations
Markus Beermann, Univ. of Ottawa (Canada)
RWTH Aachen Univ. (Germany)
Jens-Rainer Ohm, RWTH Aachen Univ. (Germany)


Published in SPIE Proceedings Vol. 6508:
Visual Communications and Image Processing 2007
Chang Wen Chen; Dan Schonfeld; Jiebo Luo, Editor(s)

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