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Generating alternative versions of image content using histograms

  • US 9,225,951 B2
  • Filed: 03/16/2012
  • Issued: 12/29/2015
  • Est. Priority Date: 03/17/2011
  • Status: Expired due to Fees
First Claim
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1. A method for generating additional versions of video content, the method comprising:

  • obtaining first histogram data for a first version of the video content adapted to be viewed in a first ambient lighting condition;

    obtaining a second version of the video content adapted to be viewed in a second ambient lighting condition;

    wherein the first and second ambient lighting conditions are different;

    obtaining second histogram data for the second version of the video content;

    generating a mapping from the second version of the video content to an additional version of the video content by performing a number of iterations of a progressive histogram matching algorithm, the number of iterations being fewer than a maximum number of iterations of the progressive histogram matching algorithm;

    wherein the number of iterations is determined based upon a signal from an ambient light sensor representing a third ambient light condition;

    wherein generating a mapping comprises determining a histogram transformation which morphs the second histogram data to become more like the first histogram data; and

    applying the mapping to generate the additional version of the video content from the second version of the video content;

    wherein the additional version is a recreation of the first version.

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