Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hai-Jui Lin0
Chih-Fang Huang0
Date of Patent
January 27, 2009
0Patent Application Number
111492050
Date Filed
June 10, 2005
0Patent Primary Examiner
Patent abstract
A method of calibrating image luminance values is provided. Firstly, scan N calibration charts to obtain N corresponding actual luminance values, where N is a positive integer larger than 2. Next, scan a document to obtain a scan luminance value. Then, provide N ideal luminance values corresponding to the N calibration charts. Lastly, determine a calibrated luminance value according to the N actual luminance values, the N ideal luminance values and the scan luminance value.
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