Patent ID: 7982868
Filing Date: 2011-07-19
Classification: B07C,F02B,G01N

Abstract:
1. A method for detecting one or more foreign substances in one or more containers filled with liquid, comprising the steps of: transporting one or more containers filled with liquid; illuminating each container with content with one or more fixedly disposed light sources; and inspecting each container from two or more different orientations using two or more cameras, wherein cameras and lighting are disposed substantially fixedly relative to each other, while the cameras and light sources are mutually switched such that two or more images of each container can be recorded with mutually differing illumination and/or angle of incidence; and comparing foreign substances in the two or more images; wherein a container is rejected on the basis of a probability distribution obtained from the comparisons, and wherein above a determined probability it is concluded that a foreign substance is a glass particle or other undesirable particle.