A linear prefilter for image sampling with ringing artifact control

Abstract : When sampling a continuous image or subsampling a discrete image, aliasing artifacts can be controlled by filtering the data prior to sampling. Bandlimiting filters completely avoid aliasing artifacts, but have to find a compromise between blur and ringing artifacts. In this paper, we propose a new joint definition of blur/ringing artifacts, that associates to a given bandlimited prefilter its so-called spread-ringing curve. We then build a set of filters yielding the optimal blur/ringing compromise according to the previous definition. We show on experiments that such filters yield sharper images for a given level of ringing artifact.
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Contributor : Lionel Moisan <>
Submitted on : Tuesday, March 11, 2008 - 12:24:08 AM
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Gwendoline Blanchet, Lionel Moisan, Bernard Rougé. A linear prefilter for image sampling with ringing artifact control. International Conference on Image Processing, Sep 2005, Gênes, Italy. pp.577-580, ⟨10.1109/ICIP.2005.1530457⟩. ⟨hal-00262110⟩



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