Method and apparatus for reducing the gray scale resolution of a

Details Method and apparatus for reducing the gray scale resolution of a Method and apparatus for reducing the gray scale resolution of a

1980-01-31

1982-04-20

Krass, Errol A.

Boots, shoes, and leggings

358282, H04N 140

Patent

active

043262589

ABSTRACT:
A method and apparatus for reducing the gray scale resolution of a document. The apparatus includes a scanning module for scanning a document along x and y coordinates with regard thereto for generating pixels representing gray scale values for discrete areas of the document along the x and y coordinates, with each pixel having a predetermined number of bits. A high pass filter module is also included for summing the associated pixels within a window to produce a window sum as the window is moved relatively along coordinates corresponding to the x and y coordinates, and the high pass filter module also includes means for comparing a selected pixel within a window with the associated window sum and predetermined criteria and for generating first and second output values in accordance therewith. The first and second output values have a fewer number of bits than the asssociated selected pixel.

REFERENCES:
patent: 3471638 (1969-10-01), De Groat
patent: 3778606 (1973-12-01), Schmitt et al.
patent: 3816729 (1974-06-01), Works
patent: 3952186 (1976-04-01), Speiser et al.
patent: 4001500 (1977-01-01), Lavery et al.
patent: 4020281 (1977-04-01), Davis, Jr.
patent: 4023028 (1977-05-01), Dillard
patent: 4150401 (1979-04-01), Yamamoto et al.
patent: 4205341 (1980-05-01), Mitsuya et al.
patent: 4210936 (1980-07-01), Cinque et al.
patent: 4212072 (1980-07-01), Huelsman et al.
patent: 4245258 (1981-01-01), Holladay
patent: 4251837 (1981-02-01), Janeway
Abraham, "Rotating Image Data", IBM Tech. Discl. Bulletin, vol. 21, No. 4, Sep. 1978, pp. 1424-1426.

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