Image restoration processing system and method

Details Image restoration processing system and method Image restoration processing system and method

1991-10-24

1993-12-07

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358455, 358457, 358458, 358500, 382 54, H04N 140, H04N 146, G06K 936

Patent

active

052687716

ABSTRACT:
An image processing system which has functions for inputting, storing or receiving, as a binary image data, an image as a document including a photograph having a varying brightness density and of outputting a multi-valued, half-tone image data to a display, a printer or the like, and an image processing method. The system includes a restoration processor. The restoration processor includes a storage for storing therein the binary image data scanningly inputted with use of a window of a predetermined size of m.times.n pixels, a white pixel number detector for detecting the number of white pixels in the binary image data within the window, a plurality of calculators for performing multiplication/accumulations operation over the binary image data within the window and a predetermined coefficient matrix to provide a plurality of multi-valued image data, and a selector for selecting one of the plurality of multi-valued image data found by the plurality of calculators.

REFERENCES:
patent: 4682215 (1987-07-01), Adachi
patent: 4750044 (1988-06-01), Nakajima
patent: 4945496 (1990-07-01), Kurakake et al.
patent: 5125045 (1992-06-01), Murakami et al.
patent: 5140441 (1992-08-01), Sugiura et al.

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