07058234 is referenced by 24 patents and cites 9 patents.

A method of enhancing the tonal and spatial characteristics of a digital image includes receiving a source digital image wherein the source digital image is in a luminance-chrominance representation having a luminance digital image channel and at least two chrominance digital image channels; generating a tone scale function that can be used to enhance the tonal characteristics of the source digital image; and classifying the tone scale function into one of two or more categories wherein the classification categories include expansive and compressive. The method further includes using the tone scale function, a spatial filter, and the luminance digital image channel to generate an enhanced luminance digital image channel when the tone scale function has been classified as compressive, and using the tone scale function and the luminance digital image channel to generate an enhanced luminance digital image channel when the tone scale function has been classified as expansive.

Title
Enhancing the tonal, spatial, and color characteristics of digital images using expansive and compressive tone scale functions
Application Number
10/280369
Publication Number
7058234 (B2)
Application Date
October 25, 2002
Publication Date
June 6, 2006
Inventor
Andrew C Gallagher
Brockport
NY, US
Edward B Gindele
Rochester
NY, US
Agent
Raymond L Owens
Assignee
Eastman Kodak Company
NY, US
IPC
G06K 9/40
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