Halftoning with color error diffusion of one separation...

Details Halftoning with color error diffusion of one separation... Halftoning with color error diffusion of one separation...

2005-03-02

2009-12-01

Poon, King Y (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003010, C358S003050, C358S515000

Reexamination Certificate

active

07626729

ABSTRACT:
Embodiments include a method for halftoning a source image. The halftoning includes error diffusion processing of a first separation of plural color separations of a pre-rendered image after error diffusion processing a second separation of the plural color separations of the pre-rendered image. The error diffusion processing of the first separation including, for respective pixel values corresponding to the first separation, choosing respective magnitudes of the respective pixel values as a function of the error diffusion processing of the second separation. A rendered image is output which comprises the same plural color separations. The output rendered image is populated with, for the first separation, pixel information based on the respective magnitudes.

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