Method and System for Removal of Fog, Mist, or Haze from Images and Videos

  • US 20140140619A1
  • Filed: 02/02/2012
  • Published: 05/22/2014
  • Est. Priority Date: 08/03/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method for removing fog from images and/or videos comprising:

  • (a) carrying out a histogram equalization such that a foggy image is equalized to increase contrast;

    (b) providing an airlight map of the foggy image and/or video;

    (c) refining the airlight map involving anisotropic diffusion and/or bilateral filtering; and

    (d) restoring the foggy image based on the refined airlight map involving a restoration process having flexibility to focus on the quality of the image and/or video at a required depth involving an extinction co-efficient for attenuation and airlight and performing a histogram stretching of the restored image if the restored image has low contrast.

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