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Tone mapping for low-light video frame enhancement

  • US 8,698,924 B2
  • Filed: 11/08/2010
  • Issued: 04/15/2014
  • Est. Priority Date: 03/05/2007
  • Status: Active Grant
First Claim
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1. A method of generating sharp, well-exposed, color images from low-light images, comprising:

  • acquiring a series of under-exposed images;

    computing a mean image based on an average of multiple images of the series of under-exposed images;

    generating a sum image based on a sum of multiple images of the series of under-exposed images;

    mapping chrominance variables of pixels of the mean image to chrominance variables of pixels of the sum image;

    replacing chrominance values of pixels within the series of under-exposed images with chrominance values of the sum image; and

    generating a set of sharp, well-exposed, color images based on the series of under-exposed images with replaced chrominance values.

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