07113649 is referenced by 19 patents and cites 15 patents.

A method of producing a tone scale function which can operate on a source digital image to improve tonal characteristics, includes generating the tone scale function having a highlight tone scale segment and a shadow tone scale segment defined relative to a reference point on the tone scale function, and that is adapted to operate on the source digital image to improve its tonal characteristics by: using a first function with a monotonically decreasing slope characteristic to produce the highlight tone scale segment that includes points that are equal to or greater than the reference point; and using a second function with a monotonically increasing slope characteristic to produce the shadow tone scale segment that includes points that are equal to or less than the reference point.

Title
Enhancing the tonal characteristics of digital images
Application Number
10/178260
Publication Number
7113649 (B2)
Application Date
June 24, 2002
Publication Date
September 26, 2006
Inventor
Edward B Gindele
Rochester
NY, US
Agent
Raymond L Owens
Assignee
Eastman Kodak Company
NY, US
IPC
G06K 9/40
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