05974189 is referenced by 78 patents and cites 20 patents.

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.

Title
Method and apparatus for modifying electronic image data
Application Number
8/66273
Publication Number
5974189
Application Date
May 24, 1993
Publication Date
October 26, 1999
Inventor
Henry Nicponski
Albion
NY, US
Agent
Francis H Boos Jr
Assignee
Eastman Kodak Company
NY, US
IPC
G06T 5/00
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