Near black under color removal

Details Near black under color removal Near black under color removal

1996-07-15

2000-05-16

Mehta, Bhavesh

Image analysis

Color image processing

Drop-out color in image

382167, 382266, 358518, 358532, G06K 900

Patent

active

060647612

ABSTRACT:
An arrangement for sharpening the resolution of printed text in a color printing system is disclosed. An image processing system (1) includes a color conversion apparatus (2) for converting from one color space (RBG) to another color space (CMYK) for display on a color printer (8). The color conversion apparatus (2) includes a near-black correction unit (36) which detects near black-near white and near white-near, black transistions and when such a transition occurs, outputs a full,or deep black color in place of the near-black color.

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patent: 4980760 (1990-12-01), Hiratsuka et al.
patent: 5031035 (1991-07-01), Abe
patent: 5311328 (1994-05-01), Murata
patent: 5331442 (1994-07-01), Sorimachi
patent: 5361147 (1994-11-01), Katayama et al.
patent: 5475800 (1995-12-01), Vaughn et al.

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