In this paper, we present a hybrid halftoning algorithm called clustered AM/FM halftoning. It is a generalization of the AM/FM halftoning algorithm developed by the authors earlier. With tone-dependent clustering strength control, the algorithm generates dispersed-dot halftone as error diffusion in highlight area and clustered-dot halftone similar to clustered-dot screen in mid-tone and shadow areas. The transition of the halftone texture is smooth. Moreover, the algorithm shows good Moire resistence. Therefore, it may be especially suitable for such application as electro-photograpic multi-function printer.
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