Perceptual image resolution enhancement system

Details Perceptual image resolution enhancement system Perceptual image resolution enhancement system

1996-09-11

1999-03-09

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

382266, 382262, G06K 940

Patent

active

058807675

ABSTRACT:
The present invention provides an effective, low cost method and system for enhancing various types of images including photograph, CD, video, and graphic art images. The method of enhancing the input image, includes the steps of: filtering the input image to extract m different frequency components r.sub.k ; adaptively sharpening the m different frequency components r.sub.k, where the amount of sharpening for each component adding the adaptively sharpened m different frequency components g.sub.k typically nonlinear, the step of determining the value of the adaptive frequency component corresponding to the sharpening function is achieved by mapping the filtered component by the corresponding sharpening function.

REFERENCES:
patent: 4538179 (1985-08-01), Tsutomu et al.
patent: 4794531 (1988-12-01), Morishita et al.
patent: 5081692 (1992-01-01), Kwon et al.

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