Image processing apparatus for mixing weighted continuous-tone a

Details Image processing apparatus for mixing weighted continuous-tone a Image processing apparatus for mixing weighted continuous-tone a

1990-04-17

1991-09-24

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358463, 358461, H04N 140

Patent

active

050518429

ABSTRACT:
An image processing apparatus comprises an unsharp signal generating means for processing image signals S obtained from continuous-tone images for average so as to generate unsharp signals U, a weighted parameter generating means for generating weighted parameters P and Q according to the level of the image signals S and the level of the unsharp signals U and an image signal producing means for producing an image signal T according to the following equation:

REFERENCES:
patent: 4972256 (1990-11-01), Hirosawa

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