Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Peter Wagner0
Zhichun Lei0
Yalcin Inescu0
Piergiorgio Sartor0
Date of Patent
September 5, 2006
0Patent Application Number
103726800
Date Filed
February 24, 2003
0Patent Primary Examiner
Patent abstract
An adaptive histogram equalization method is introduced which allows the histogram equalization amount to automatically adapt to the original image contrasts, which can be measured from the originals. Contrast over-enhancement is avoided by limiting the spatial frequency response of the histogram. Besides that, methods to remedy the brightness change problem encountered by histogram equalization are described.
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