05822453 is referenced by 44 patents and cites 6 patents.

A method of estimating the scene contrast from a digital image, the method comprises the steps of: forming a Laplacian histogram distribution; determining, from the Laplacian histogram, first and second thresholds which eliminate substantially uniform areas or a substantially textured portion of the digital image; selecting pixels which are based on the first and second thresholds from the digital image; forming a histogram from the sampled pixels; computing a standard deviation of the sampled histogram; and estimating contrast of the digital image by comparing the computed standard deviation with a predetermined contrast for determining contrast of the input image in relationship with the predetermined contrast.

Title
Method for estimating and adjusting digital image contrast
Application Number
8/763270
Publication Number
5822453
Application Date
December 10, 1996
Publication Date
October 13, 1998
Inventor
Heemin Kwon
Pittsford
KR
Hsien Che Lee
Penfield
NY, US
Agent
Peyton C Watkins
Assignee
Eastman Kodak Company
NY, US
IPC
G06K 9/00
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