Non-destructive fill volume measurement system

摘要

Fill volume of a liquid in a sealed, transparent container is determined by rotating the container about a transverse axis so as to confine the air to a generally cylindrical air pocket about the transverse axis of rotation. Machine vision methods and apparatus are used to capture an image of the container, including the air pocket, for measuring the size of the air pocket. A common volume of the container is defined as a generally cylindrical region intermediate upright and inverted liquid levels. The common volume and the air pocket volume are used to determine the liquid fill volume so that all measurements are acquired in a central portion of the container having a regular geometric shape.