Color reduction processing apparatus and color reduction method

Details Color reduction processing apparatus and color reduction method Color reduction processing apparatus and color reduction method

2004-07-28

2009-08-18

Poon, King Y (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060, C358S003130, C358S515000, C358S521000, C358S534000, C358S535000, C358S536000

Reexamination Certificate

active

07576888

ABSTRACT:
A color reduction processing apparatus and method that is simple to configure and adjust produces two-color print image data reflecting the impression of the original full-color image. Each pixel in a full-color image is converted to binarized principal and secondary color print data by principal and secondary color processors respectively using respective threshold value matrices. The threshold values of these matrices, which are calculated from a reference threshold value matrix stored in memory, can be adjusted, via adjustment values, to control the overall density of the principal and secondary colors. The adjustment values can be set in a matrix configuration unit. The binarized principal and secondary color print data can also be further corrected by correction and/or filtering operations performed by a correction processor.

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