Gray level halftone processing

Details Gray level halftone processing Gray level halftone processing

2007-05-15

2007-05-15

Moore, David (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060, C358S003210, C358S003240, C358S003260, C358S003270, C382S269000

Reexamination Certificate

active

09629993

ABSTRACT:
An image processing method and apparatus for generating a gray level rendered pixel value that has been subjected to a halftoning process. In the method and apparatus a gray level pixel value of the pixel to be rendered by the halftoning process is provided as one input to a lookup table. A coordinate value that is determined from a pixel location in the image of the pixel to be rendered by the halftoning process is also provided as a second input to the lookup table. The first and second inputs represent an address in the lookup table of a rendered halftone value for halftone rendering of the pixel having the input gray value and the pixel location in the image.

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