Image processing apparatus having a smoothing function which ref

Details Image processing apparatus having a smoothing function which ref Image processing apparatus having a smoothing function which ref

1996-12-10

1998-08-04

Rogers, Scott

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382264, 382275, 358463, G06K 940, G06K 944, G06T 506, H04N 1409

Patent

active

057907110

ABSTRACT:
An image processing apparatus capable of normally carrying out correct and moreover highly precise smoothing while preventing the complication of the smoothing process and which is able to reliably carry out the smoothing process even when the line density of the image data is multiplied by a predetermined factor. When the black-white pattern of pixel data in a predetermined area is a specific pattern, the judging and line density conversion circuit determines whether a predetermined pixel data is black or white by referring to the black-white pattern of pixel data existing in the main scanning direction of the pixel data as well as the black-white pattern of pixel data existing in a predetermined area. As the line density of the image data can be simultaneously multiplied by a predetermined factor, more precise smoothing is possible.

REFERENCES:
patent: 4510618 (1985-04-01), Ataman et al.
patent: 4827533 (1989-05-01), Tanaka
patent: 5561724 (1996-10-01), Kido et al.
patent: 5649031 (1997-07-01), Nakamura et al.

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