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13 April 2009TRICLOBS portable triband color lowlight observation system
We present the design and first test results of the TRICLOBS (TRI-band Color Low-light OBServation) system The
TRICLOBS is an all-day all-weather surveillance and navigation tool. Its sensor suite consists of two digital image
intensifiers (Photonis ICU's) and an uncooled longwave infrared microbolometer (XenICS Gobi 384). The night vision
sensor suite registers the visual (400-700 nm), the near-infrared (700-1000 nm) and the longwave infrared (8-14 μm)
bands of the electromagnetic spectrum. The optical axes of the three cameras are aligned, using two dichroic beam
splitters: an ITO filter to reflect the LWIR part of the incoming radiation into the thermal camera, and a B43-958 hot
mirror to split the transmitted radiation into a visual and NIR part. The individual images can be monitored through two
LCD displays. The TRICLOBS provides both digital and analog video output. The digital video signals can be
transmitted to an external processing unit through an Ethernet connection. The analog video signals can be digitized and
stored on on-board harddisks. An external processor is deployed to apply a fast lookup-table based color transform (the
Color-the-Night color mapping principle) to represent the TRICLOBS image in natural daylight colors (using
information in the visual and NIR bands) and to maximize the detectability of thermal targets (using the LWIR signal).
The external processor can also be used to enhance the quality of all individual sensor signals, e.g. through noise
reduction and contrast enhancement.
Alexander Toet andMaarten A. Hogervorst
"TRICLOBS portable triband color lowlight observation system", Proc. SPIE 7345, Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2009, 734503 (13 April 2009); https://doi.org/10.1117/12.817526
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Alexander Toet, Maarten A. Hogervorst, "TRICLOBS portable triband color lowlight observation system," Proc. SPIE 7345, Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2009, 734503 (13 April 2009); https://doi.org/10.1117/12.817526