Patents by Inventor Chih-Fang Huang

Chih-Fang Huang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of calibrating image luminance values
    Publication number: 20050275903
    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.
    Type: Application
    Filed: June 10, 2005
    Publication date: December 15, 2005
    Inventors: Chih-Fang Huang, Hai-Jui Lin