63fb46d6_bster_US___Patent_applications__Description
[Patent application number] 20080247666 [Published] 10-09-2008 [Description] 
DARKNESS CONTROL USING PATTERN MATCHING - The present invention is a method and apparatus for processing image data to accomplish tuning or adjustment of images, so as to modify at least the darkness thereof, using compact, efficient methods and designs.
Xing Li, Webster US - Patent applications