Image processing method and apparatus using separate processing

Details Image processing method and apparatus using separate processing Image processing method and apparatus using separate processing

1997-04-07

1998-11-03

Vu, Kim Yen

Image analysis

Image transformation or preprocessing

Changing the image coordinates

358448, 358451, 358462, 358450, H04N 1387

Patent

active

058321411

ABSTRACT:
In variably magnifying and outputting an image, proper variable magnification processing is performed with respect to a character/line draw component and a pseudo-halftone component, respectively. A binary image acquired by a binary image acquiring unit is supplied to an image area separating unit, in which the binary image is separated into a character/line draw area and a pseudo-halftone area. An image in the character/line draw area is supplied to an outline variable magnification unit, which performs extraction of outline vector data, smoothing processing thereof, and reproduction processing of a binary image. An image in the pseudo-halftone area is supplied to a pseudo-halftone image variable magnification unit, in which the image is subjected to multivalue conversion processing in units of pixels, variable magnification processing by thinning or interpolation of pixels, and binarization again. A synthesizing unit synthesizes binary images output from these variable magnification unit and outputs the synthesized image to a binary image output unit.

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