Image data processor for representing gray levels by a plurality

Details Image data processor for representing gray levels by a plurality Image data processor for representing gray levels by a plurality

1995-12-28

1998-09-01

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358296, 358406, 358504, 358455, H04N 1407

Patent

active

058018450

ABSTRACT:
Disclosed is an image data processor for processing input image data representing the gray level of each of pixels constituting an image to produce output image data representing the gray level of each of pixels constituting an output image. The relative position of the pixel corresponding to the input image data in a group of pixels including a predetermined number of pixels is identified. The input image data is subjected to data processing corresponding to the relative position of the pixel in the group of pixels on the basis of the result of the identification. Consequently, gray levels are represented by the entire group of pixels.

REFERENCES:
patent: 5289294 (1994-02-01), Fujisawa
patent: 5359424 (1994-10-01), Kobayashi
patent: 5515480 (1996-05-01), Frazier
patent: 5642204 (1997-06-01), Wang

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