06069979 is referenced by 25 patents and cites 7 patents.

A method for compressing the dynamic range of a digital radiographic image comprising the steps of: providing an original digital radiographic image; processing the original digital radiographic image with an unsharp masking technique to produce a low frequency digital radiographic image having low frequency components; subtracting the low frequency digital radiographic image from the original digital radiographic image to produce a high frequency digital radiographic image; multiplying the low frequency image by a first gain factor and the high frequency image by a second gain factor to produce respective modified low and high frequency images; combining the modified low and high frequency images with a mid-range image to produce an output digital image; and passing the output digital image through a look-up table to render an image with code values that represent optical density of a printed or displayed rendering of the image.

Title
Method for compressing the dynamic range of digital projection radiographic images
Application Number
804998
Publication Number
6069979
Application Date
November 4, 1997
Publication Date
May 30, 2000
Inventor
Richard L VanMetter
Webster
NY, US
Agent
William F Noval
Assignee
Eastman Kodak Company
NY, US
IPC
G06K 9/40
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