Patent ID: 9172913
Filing Date: 2015-10-27
Classification: G06K,H04N

Abstract:
1. An apparatus comprising: a. an illumination source configured to illuminate a field of view; b. a camera configured to capture a series of image frames corresponding to the field of view, wherein the camera and the illumination source are substantially co-aligned, further wherein each image frame includes auto-reflected light from within the field of view resulting from illumination by the illumination source, wherein the auto-reflected light is light from the illumination source that is reflected from an object in the field of view at a same angle as impinging light originating from the illumination source; and c. a means for processing the captured series of image frames to determine a set of extracted objects, the set of extracted objects comprises a set of glint objects corresponding to the auto-reflected light and a set of kinetic objects, and to process each extracted object to determine if the extracted object is a foreign object in the field of view compared to a known background determined from a series of previous image frames, wherein determining the set of glint objects is not a function of determining the set of kinetic objects, and determining the set of kinetic objects is not a function of determining the set of glint objects.