DEMOSAICING METHODS and MOIRE ANALYSIS

Analysis of the microstructures (“rosettes”) in the superposition of periodic layers

[+] Author Affiliations
Isaac Amidror, Roger D. Hersch

Ecole Polytechnique Fe´de´rale de Lausanne (EPFL), Lab. de Syste`mes Pe´riphe´riques (LSP), 1015 Lausanne, Switzerland

J. Electron. Imaging. 11(3), 316-337 (Jul 01, 2002). doi:10.1117/1.1477442
History: Received Dec. 6, 1999; Revised Jun. 28, 2001; Accepted Dec. 7, 2001; Online July 25, 2002
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Superpositions of periodic dot screens are largely used in electronic imaging in the field of color printing. In such superpositions the interaction between the superposed layers may cause new structures to appear which did not exist in any of the original layers: macrostructures (also known as moire´ patterns) and microstructures (also known as rosettes). While macrostructures are not always generated in the superposition (cf. moire´-free superpositions), microstructures exist practically in any superposition, except for the most trivial cases. In fact, even the macrostructures, whenever they occur, consist of variations in the microstructure of the superposition. In the present paper we investigate the microstructures that appear in the superposition of periodic structures and their properties. We also find the conditions on the superposed layers under which the microstructure of the superposition varies—or remains invariant—when individual layers in the superposition are laterally shifted with respect to each other. © 2002 SPIE and IS&T.

© 2002 SPIE and IS&T

Topics

Superposition

Citation

Isaac Amidror and Roger D. Hersch
"Analysis of the microstructures (“rosettes”) in the superposition of periodic layers", J. Electron. Imaging. 11(3), 316-337 (Jul 01, 2002). ; http://dx.doi.org/10.1117/1.1477442


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