Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chingchun Huang0
Yao-Hong Tsai0
Date of Patent
August 28, 2007
0Patent Application Number
107428440
Date Filed
December 23, 2003
0Patent Primary Examiner
Patent abstract
A region-based illumination-normalization method and system utilizes a plurality of filters to filter a test image for obtaining a high frequency image and a low pass image. The low pass image is segmented into several regions by an image segmentation unit so that a region-based adjustment unit normalizes the regions based on an illumination reference model, respectively. Finally, an image combination unit is employed to combine the high frequency image and the low pass image that is normalized.
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