Image analysis – Image enhancement or restoration
Patent
1993-05-24
1999-10-26
Chang, Jon
Image analysis
Image enhancement or restoration
382309, G06T 500
Patent
active
059741899
ABSTRACT:
An electronic reproduction apparatus is provided with a modeling routine that includes the steps of identifying a portion of an electronic image to be modified; defining an optical axis, a projection point, a density contour shape and a density gradient profile within the portion of the electronic image to be modified; and calculating modified image data values based on the optical axis, projection point, density contour shape and density gradient profile; applying the modified image data values the portion of the electronic image to be modified. The modified image data is calculated using a cubic spline interpolation. The modeling routine enables the production of smooth and natural contours and gradients required to create common enhancement effects such as shadows, glows, highlights and vignettes.
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Boos, Jr. Francis H.
Chang Jon
Eastman Kodak Company
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