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System and method for determining a gamma curve of a display device

  • US 7,986,356 B2
  • Filed: 07/25/2007
  • Issued: 07/26/2011
  • Est. Priority Date: 07/25/2007
  • Status: Active Grant
First Claim
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1. A method of determining a gamma curve of a display device, the method comprising:

  • identifying a region of interest of a display surface of the display device;

    calculating a centroid of the region of interest;

    applying a plurality of input levels to the display device to generate a corresponding plurality of displayed images on the display surface;

    capturing at least one image of each of the displayed images with a camera; and

    calculating a gamma curve of the display device based on the captured images and the centroid,wherein calculating a gamma curve comprises;

    identifying a neighborhood region around the centroid; and

    for each captured image, calculating an average value of pixels positioned within the identified neighborhood region, wherein the calculated average values represent output values of the gamma curve corresponding to the plurality of input levels.

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