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Detection of foaming contaminants in containers using image processing

  • US 5,536,935 A
  • Filed: 11/08/1994
  • Issued: 07/16/1996
  • Est. Priority Date: 02/17/1994
  • Status: Expired due to Term
First Claim
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1. A method of detecting a foaming contaminant in a moving container, comprising:

  • producing an image of at least a portion of the interior of the moving container and any contents thereof,determining a level of low frequency spatial variations in intensity in the image,determining a level of high frequency spatial variations in intensity in the image, anddetermining the presence of a foaming contaminant by comparing the level of low frequency spatial variations in intensity to the level of high frequency spatial variations in intensity.

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