Patent ID: 9103723
Filing Date: 2015-08-11
Classification: G01C,G01J,G01V,G08B

Abstract:
1. An optical surveillance system, comprising: a plurality of light sources; a signal generator operable to continuously modulate each of the light sources with a unique modulating waveform; a detector operable to detect the modulated light sources; and a processor communicatively coupled to the detector and configured with information of relative distances between the plurality of light sources and with information of the unique modulating waveform for each of the light sources; the processor operable to determine a location of an object disposed between the light sources and the detector based on the information of the unique modulating waveform for one or more light sources obscured with respect to the detector and the information of relative distances between the plurality of light sources; the processor further operable to determine a size and a shape of the object based on the determined location, the information of the unique modulating waveform for one or more light sources obscured with respect to the detector, and the information of the relative distances between the plurality of light sources.