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Method of processing brightness of an image and related device

  • US 7,738,727 B2
  • Filed: 08/14/2006
  • Issued: 06/15/2010
  • Est. Priority Date: 03/23/2006
  • Status: Active Grant
First Claim
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1. A method for processing brightness of an image comprising:

  • generating a plurality of predetermined brightness distributions each comprising a number of pixels whose brightness value is within each of a plurality of predetermined brightness intervals;

    generating a brightness distribution of a plurality of pixels of the image according to brightness values of the pixels;

    a brightness comparator comparing the brightness distribution of the pixels with each of the predetermined brightness distributions for determining whether a difference between the brightness distribution of the pixels and one of the predetermined brightness distributions is within a predetermined range; and

    when the difference between the brightness distribution of the pixels and the one of the predetermined brightness distributions is within the predetermined range, a brightness gain unit adjusting brightness values of upcoming pixels according to a transformation rule corresponding to the one of the predetermined brightness distribution.

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