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Different halftoning algorithms are best for different types of
images and different types of printers. For example, error diffusion
is good at producing image details. In flat regions, it often has
visible artifacts such as worms that are difficult to get rid of.
Color smooth dither, on the other hand, produces smooth textures in
flat regions, but is usually less sharp for lack of feedback.
ImageSmart is a technology for integrating different halftoning
algorithms and managing their transitions in a single image.
This is especially important in rendering a scanned document,
where there is a mixture of text, line art and area fill, and raster
image. However, the driver does not have any information regarding
the composition of the page. ImageSmart automaticaly selects a
halftoning algorithm based on image content
References
Q. Lin and J. Allebach, "Color FM screen design using DBS
algorithm", Proceedings, SPIE Electronic Imaging
Conference: Color Imaging: Device-Independent Color, Color Hardcopy
and Graphic Arts III, vol. 3300, pp. 353-361, January 1998.
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