Method and apparatus for generating a halftone pattern for a mul

Details Method and apparatus for generating a halftone pattern for a mul Method and apparatus for generating a halftone pattern for a mul

1994-10-28

1996-12-17

Mancuso, Joseph

Image analysis

Image enhancement or restoration

Variable threshold, gain, or slice level

358457, G06K 938

Patent

active

055862039

ABSTRACT:
Method and apparatus for generating a halftone image for a multi-level output device employing a dither matrix generated by minimizing a visual cost function. The dither matrix is addressed by the least significant bits of a pixel address and the value supplied by the dither matrix is added to the pixel value. The resulting sum is quantized in a quantizer to produce the multi-level halftone value.

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patent: 5214517 (1993-05-01), Sullivan et al.
patent: 5239597 (1993-08-01), Chung et al.
H. Kotera, K. Yoshida, Y. Tsuda, H. Horiuchi, N. Takehara and H. Odaware, "A Poster-Size Color Ink-Jet Printing System", Proceedings of the Society for Information Display (SID), vol. 25/4, 1984.

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