Abstract
Advances in printing technology has made multilevel halftoning become important, as printers can now print inks of dif- ferent intensities. This work presents a multilevel halftoning algo- rithm based on multiscale error diffusion. This algorithm takes care of constrained pixels before handling the unconstrained pixels, and diffuses errors with a noncausal filter such that halftones of better image quality can be achieved. © 2010 SPIE and
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