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Method of correcting gradation and image display system employing the same

  • US 6,816,155 B1
  • Filed: 03/29/2000
  • Issued: 11/09/2004
  • Est. Priority Date: 03/29/1999
  • Status: Expired due to Fees
First Claim
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1. A method of gradation correction of input image data to be displayed on an image display apparatus, comprising the steps of:

  • acquiring first characteristic values which represent the display characteristics inherent in the image display apparatus;

    converting the first characteristic values to logarithmic data;

    acquiring as the logarithmic data second characteristic values which represent the desired gradation to be eventually realized with the image display apparatus;

    constructing a gradation correction table based on the logarithmic data of said first characteristic values and the logarithmic data of said second characteristic values that have been converted logarithmically; and

    performing gradation correction on the input image data to the image display apparatus using said gradation correction table.

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