Smoothing method, smoothing circuit and image output apparatus

Details Smoothing method, smoothing circuit and image output apparatus Smoothing method, smoothing circuit and image output apparatus

2005-10-11

2005-10-11

Mancus, Joseph (Department: 2625)

Image analysis

Image enhancement or restoration

Image filter

C382S205000, C358S002990

Reexamination Certificate

active

06954556

ABSTRACT:
A smoothing method extracts an evaluation window including a target pixel of a multi-value image data in which tone is represented by a multi-value in units of pixels, and judges black and white of the target pixel according to a predetermined rule, and binarizes pixel data within the evaluation window. Further, the smoothing method generates a correction value based on collating binarized pixel data within the evaluation window and a look-up table which stores patterns in vicinities of the target pixel, and outputs a multi-value correction signal in which the correction value is converted into a multi-value.

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