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Communication Dans Un Congrès Année : 2005

A linear prefilter for image sampling with ringing artifact control

Résumé

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.

Dates et versions

hal-00262110 , version 1 (11-03-2008)

Identifiants

Citer

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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