Image processing method and apparatus

Details Image processing method and apparatus Image processing method and apparatus

1997-08-19

1999-09-07

Rogers, Scott

Image analysis

Image enhancement or restoration

Image filter

382263, 382264, 382299, 382300, G06K 944, G06T 500

Patent

active

059499150

ABSTRACT:
A predetermined filtering process is carried out on an original image signal by using a predetermined filter, and a plurality of low-resolution image signals, which represent low-resolution images having different levels of resolution, are thereby formed. An interpolating and enlarging process is carried out on each of the low-resolution image signals, and a plurality of different unsharp mask image signals of the original image signal are thereby formed. Predetermined nonlinear processing is then carried out in accordance with the unsharp mask image signals and the original image signal. A filter having a filter factor determined in accordance with read-out density, with which the original image signal was acquired, is employed as the predetermined filter.

REFERENCES:
patent: 4315318 (1982-02-01), Kato et al.
patent: 4317179 (1982-02-01), Kato et al.
patent: 5051902 (1991-09-01), Hishinuma
patent: 5454044 (1995-09-01), Nakajima

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