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Process and device for detecting fires based on image analysis

  • US 6,937,743 B2
  • Filed: 08/25/2003
  • Issued: 08/30/2005
  • Est. Priority Date: 02/26/2001
  • Status: Expired due to Fees
First Claim
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1. An automatic fire detection method, based on the recognition of flames and/or smoke from the analysis of a sequence of images, the analysis being based on several image processing algorithms,an algorithm comprising a step of comparing the frequency content of at least one image of said sequence with the frequency contents of a reference image in order to detect an attenuation of the high frequencies independently of the variations on the other portions of the image'"'"'s spatial spectrum.

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