Image information processor for producing high-quality output im

Details Image information processor for producing high-quality output im Image information processor for producing high-quality output im

1993-03-31

1997-07-15

Couso, Yon J.

Image analysis

Image enhancement or restoration

382263, 382264, G06K 940

Patent

active

056490313

ABSTRACT:
An image information processor for producing a high-quality output image by emphasizing the contour portions of a character, a photograph and others and by preventing the generation of a Moire patterns in a dot region, for preventing an increase in the amount of codes, and for making it unnecessary to set desired binarization processing for each original, is provided. The processor includes a unit for scanning the original to convert each pixel data into an electric signal, a unit for controlling the start of image processing, a filter for carrying out enhancement processing among a plurality of pixels arranged in oblique directions after smoothing processing has been carried out among a plurality of contiguous pixels arranged in scanning and traverse directions, and a unit for carrying out at least one of binarization and binarization capable of realizing pseudo tone expression. According to the above construction of the image information processor, a unit for preventing the generation of a Moire pattern in the dot region of an original and for carrying out contour enhancement for the character/photograph region of the original can be formed of simple hardware capable of performing a high-speed operation, a clear binary output is obtained, and an increase in transmission time is prevented.

REFERENCES:
patent: 4447830 (1984-05-01), Stoffel
patent: 4554593 (1985-11-01), Fox
patent: 4694342 (1987-09-01), Klees
patent: 5031227 (1991-07-01), Raasch et al.
patent: 5050227 (1991-09-01), Furusawa et al.
patent: 5151953 (1992-09-01), Landeta
patent: 5299030 (1994-03-01), Kim

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