Image processing method and system using harmonic distortion

Details Image processing method and system using harmonic distortion Image processing method and system using harmonic distortion

1995-04-19

1998-09-08

Vu, Kim Yen

Image analysis

Image enhancement or restoration

Image filter

382275, 358447, 358463, H04N 1409

Patent

active

058057412

ABSTRACT:
An image processing method for converting an image signal G input through an image input unit 11 into image signal G fitted to an image output unit 19. The method comprises the steps of superposing a harmonic component H of the image signal G in response to a level of the image signal G on the image signal G and sending the image signal G on which the harmonic component H is superposed to the image output unit 19. An image processing system for converting an image signal G input through an image input unit 11 into image signal G fitted to an image output unit 19. The system comprises harmonic component generation means 3 for generating a harmonic component H corresponding to the image signal G and harmonic component superposing means 34 for superposing the harmonic component H on the image signal G. Thereby, it is provided an image processing method and system for providing a sharp image good in gradation characteristic and granularity in a wide dynamic range.

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Sei-ichi Taguchi and Satoru Honjo, "Quality of Digital Images," The Fifth International Congress on Advances in Non-Impact Printing Technologies, Nov. 1989, pp. 383-389.

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