Method and apparatus for the resolution enhancement of gray-scal

Details Method and apparatus for the resolution enhancement of gray-scal Method and apparatus for the resolution enhancement of gray-scal

1995-10-11

1998-04-21

Rogers, Scott A.

Image analysis

Image segmentation

Distinguishing text from other regions

382209, 382254, 358462, G06K 934, G06K 962, G06T 500, H04N 140

Patent

active

057427038

ABSTRACT:
The present invention is a method and apparatus for resolution enhancement of gray-scale input images including text and line art, and more particularly to a filtering method and image processing apparatus for enhancement of high contrast line edges found in continuous tone (gray-scale) images without requiring that the input image data include predetermined tag bits to identify region types (e.g., continuous tone or text and line art).

REFERENCES:
patent: 4437122 (1984-03-01), Walsh et al.
patent: 4544264 (1985-10-01), Bassetti et al.
patent: 4841375 (1989-06-01), Nakajima et al.
patent: 4847641 (1989-07-01), Tung
patent: 4996603 (1991-02-01), Kanemitsu et al.
patent: 5001576 (1991-03-01), Tanaka et al.
patent: 5005139 (1991-04-01), Tung
patent: 5072291 (1991-12-01), Sekizawa
patent: 5101438 (1992-03-01), Kanda et al.
patent: 5134495 (1992-07-01), Frazier et al.
patent: 5138339 (1992-08-01), Curry et al.
patent: 5150311 (1992-09-01), Long et al.
patent: 5153925 (1992-10-01), Tanioka et al.
patent: 5206741 (1993-04-01), Shimura et al.
patent: 5270836 (1993-12-01), Kang
patent: 5282057 (1994-01-01), Mailloux et al.
patent: 5301037 (1994-04-01), Kang et al.
patent: 5359423 (1994-10-01), Lou
patent: 5485289 (1996-01-01), Curry
Leo Steidel; Resolution Enhancement Technologies for Laser Printers; pp. 1-14.
J. F. Moreland; A Survey of Electronic Techniques for Pictorial Image Reproduction; IEEE Transactions on Communications, vol. Com-29, No. 12 Dec. 1981.

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