Dither Removal

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Abstract

Mathematica is ideal for explaining the design of seemingly complex mathematical methods. In this article we explain the use of the 2D Fouriertransform to remove unwanted dithering artifacts from images. All steps are visualized, so the reader can get a good idea of what the Fourier transform of an image looks like, the location of the origin, the artifacts and their extent, and how geometric reasoning works in the Fourier domain. The method leads to a markedly clean-up of images deteriorated by dither.
Original languageEnglish
Title of host publicationProceedings of the international mathematica symposium 2005 (IMS2005), 5-8 August 2005 Perth, Australia
Pages285-299
Publication statusPublished - 2005

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