Patent ID: 8188430
Filing Date: 2012-05-29
Classification: G01S,G08B,H04N

Abstract:
1. A monitoring device comprising: an imaging device sensitive to visible and near-infrared electromagnetic radiation; means for concurrently directing omnidirectional visible and near-infrared electromagnetic radiation onto the imaging device without using any moving parts; a plurality of near-infrared illuminators, wherein each near-infrared illuminator is configured to emit near-infrared electromagnetic radiation in a unique region of the area around the monitoring device; and a processing component configured to operate the plurality of near-infrared illuminators in synchronization with an imaging frame rate of the imaging device, wherein only a subset of the plurality of near-infrared illuminators emit near-infrared electromagnetic radiation for a frame of image data captured by the imaging device and a unique subset of the plurality of near-infrared illuminators emit near-infrared electromagnetic radiation for two consecutive frames of image data captured by the imaging device.