Image processing apparatus and method allowing control of...

Facsimile and static presentation processing – Static presentation processing – Attribute control

Reexamination Certificate

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C358S003210, C358S003220, C382S270000

Reexamination Certificate

active

07027183

ABSTRACT:
An image forming apparatus capable of solving problems experienced in the error diffusion method operates in the following manner. An input pixel value is thresholded by a corrected threshold value, and a binarized pixel value is output. From the output value, the corrected threshold value is subtracted, the result is multiplied by a feedback coefficient β, and the result is diffused to the threshold values of surrounding pixels. As the threshold value and a scale of the pixel value are changed by the processing unit before thresholding, degree of edge enhancement is controlled.

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