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Vision system to calculate a fluid volume in a container

  • US 7,499,581 B2
  • Filed: 02/10/2005
  • Issued: 03/03/2009
  • Est. Priority Date: 02/10/2005
  • Status: Active Grant
First Claim
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1. As system for calculating a volume of liquid that is disposed within a container comprising:

  • an imaging device in the form of a digital camera that captures and stores an image of at least the volume of liquid in the container;

    a background disposed behind the container so that at least the volume of liquid in the container is disposed in front of the background,wherein the container is disposed between the digital camera and the background, the stored image being defined by a set of vertical pixel numbers and a set of horizontal pixel numbers, andwherein the background is defined by a first region that has a first color contrast and a second region that has a second color contrast; and

    a processor that performs at least on operation on the stored image including analyzing a portion of the background that is visible through the volume of liquid and appears altered relative to adjacent portions of the stored image to calculate the volume of the liquid within the container.

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