System and method for enhancing the sharpness of a colour image

Details System and method for enhancing the sharpness of a colour image System and method for enhancing the sharpness of a colour image

1995-09-12

1998-10-20

Boudreau, Leo H.

Image analysis

Image enhancement or restoration

Image filter

382162, 382189, 382199, 382205, 382232, 382255, 382269, 358500, 358532, 358538, G06K 900, G06K 948, G06K 956, G06K 940

Patent

active

058259384

ABSTRACT:
A color image is locally discoloured in the vicinity of edges. The edges extend, for example, between a superposed foreground and a background in a computer-generated image, but also between different regions in natural images which are processed, for example, in a television receiver. Consequently, the edges are perceived as being sharper upon display.

REFERENCES:
patent: 4972256 (1990-11-01), Hirosawa et al.
patent: 4974071 (1990-11-01), Maeda
patent: 5134667 (1992-07-01), Suzuki
patent: 5475812 (1995-12-01), Corona et al.
patent: 5572652 (1996-11-01), Robusto et al.
"An Objective and Subjective Evaluation of Edge Detection Methods in Images", by J.A.C. Bernsen, Philips J. Res. 46, 57-94, 1991.

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