| US 7,499,581 B2 | ||
| Vision system to calculate a fluid volume in a container | ||
| Dennis Tribble, Ormond Beach, Fla. (US); Abdul Wahid Khan, Lindenhurst, Ill. (US); and John A. Adams, Escondido, Calif. (US) | ||
| Assigned to ForHealth Technologies, Inc., Daytona Beach, Fla. (US) | ||
| Filed on Feb. 10, 2005, as Appl. No. 11/55,545. | ||
| Prior Publication US 2006/0178578 A1, Aug. 10, 2006 | ||
| Int. Cl. G06K 9/00 (2006.01); A61M 5/00 (2006.01); G01N 21/49 (2006.01); G01B 11/22 (2006.01) | ||
| U.S. Cl. 382—141 [382/128; 600/432; 356/134; 356/627; 250/577] | 38 Claims |
| 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, and
wherein 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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