Method for enlargement/reduction of image data in digital image

Details Method for enlargement/reduction of image data in digital image Method for enlargement/reduction of image data in digital image

1996-12-05

1999-05-04

Coles, Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358451, 382298, H04N 1393, G06K 942

Patent

active

059012749

ABSTRACT:
An image data enlargement/reduction method for use in a digital image processing system, performs enlargement and reduction of image data by employing a small quantity of data from a look-up table while satisfying a large range of enlargement and reduction operations as requested by a user, with a simplified circuit structure. Enlargement/reduction data is calculated by a microprocessor so that the zooming ratio can be easily modified by a software change.

REFERENCES:
patent: 4875173 (1989-10-01), Nakajima
patent: 5029017 (1991-07-01), Abe et al.
patent: 5191623 (1993-03-01), Moriya
patent: 5335296 (1994-08-01), Larkin et al.
patent: 5453846 (1995-09-01), Tsao et al.
patent: 5535007 (1996-07-01), Kim
"Scaling Binary Images: Key To High-Quality Imaging Systems", Computer Technology Review, Issue 11, No. 16, Feb. 1992, pp. 109-113.

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