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Image-based visibility measurement

  • US 7,602,937 B2
  • Filed: 06/08/2005
  • Issued: 10/13/2009
  • Est. Priority Date: 06/08/2004
  • Status: Active Grant
First Claim
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1. A system for measuring visibility, the system comprising:

  • means for determining a lighting condition for an image;

    means for calculating a visibility based on the image; and

    means for adjusting the means for calculating based on the lighting condition, wherein the means for adjusting selects any one of;

    a set of visibility calculations for a daytime lighting condition, a set of visibility calculations for a nighttime lighting condition, or a set of visibility calculations comprising at least one calculation for a daytime lighting condition and at least one calculation for a nighttime lighting condition according to the lighting condition, and wherein the means for calculating calculates the visibility using the selected set of visibility calculations.

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