Image enhancement method

Details Image enhancement method Image enhancement method

2005-04-05

2005-04-05

Mehta, Bhavesh M. (Department: 2625)

Image analysis

Image enhancement or restoration

Edge or contour enhancement

C382S118000, C382S274000, C382S275000, C358S003260, C358S003270, C358S463000

Reexamination Certificate

active

06876777

ABSTRACT:
An image enhancement method. In the first stage, an image described in first image format is received. Then, each pixel is assessed with respect to its location on the edge of the image, and the value of the pixel in second image format is assessed with respect to its falling within the range of skin tones. A first smooth filter mask is dynamically generated if the pixel is not on the edge and the value does not fall into the range of skin tones, and a smooth process is performed on the pixel according to the first smooth filter mask. In the second stage, a second smooth filter mask is dynamically generated for each pixel in the image, and a general smooth process is performed on the pixel according to the second smooth filter mask.

REFERENCES:
patent: 5576778 (1996-11-01), Fujie et al.
patent: 5611027 (1997-03-01), Edgar
patent: 6333766 (2001-12-01), Kougami et al.
patent: 6611613 (2003-08-01), Kang et al.
patent: 6678407 (2004-01-01), Tajima

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