This paper presents multispectral active gated imaging in relation to the transportation and security fields. Active gated imaging is based on a fast gated camera and pulsed illuminator, synchronized in the time domain to provide range based images. We have developed a multispectral pattern deposited on a gated CMOS Image Sensor (CIS) with a pulsed Near Infrared VCSEL module. This paper will cover the component-level description of the multispectral gated CIS including the camera and illuminator units. Furthermore, the design considerations and characterization results of the spectral filters are presented together with a newly developed image processing method.
Nick Spooren, Bert Geelen, Klaas Tack, Andy Lambrechts, Murali Jayapala, Ran Ginat, Yaara David, Eyal Levi, and Yoav Grauer, "RGB-NIR active gated imaging," Proc. SPIE 9987, Electro-Optical and Infrared Systems: Technology and Applications XIII, 998704 (Presented at SPIE Security + Defence: September 28, 2016; Published: 21 October 2016); https://doi.org/10.1117/12.2239603.
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