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As an application of the theoretical concepts introduced thus far, we present in this chapter the interesting problem of moiré minimization, namely: the question of how to find stable moiré-free combinations of several superposed dot-screens. Historically, this question finds its origin in the field of colour printing; and indeed, this context will be used here as our principal setting to illustrate the problem. Simpler cases involving only two superposed screens may also find their use in some other applications, such as the minimization of moirés which occur when a halftoned image is scanned by a digital scanner or sent by fax.
KeywordsSingular Point Angle Difference Colour Printing Halftoned Image Screen Period
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