HIL range performance of notional hyperspectral imaging sensors

Van A. Hodgkin; Christopher L. Howell

doi:10.1117/12.2223004

3 May 2016 HIL range performance of notional hyperspectral imaging sensors

Proceedings Volume 9820, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXVII; 98200N (2016) https://doi.org/10.1117/12.2223004
Event: SPIE Defense + Security, 2016, Baltimore, MD, United States

Abstract

In the use of conventional broadband imaging systems, whether reflective or emissive, scene image contrasts are often so low that target discrimination is difficult or uncertain, and it is contrast that drives human-in-the-loop (HIL) sensor range performance. This situation can occur even when the spectral shapes of the target and background signatures (radiances) across the sensor waveband differ significantly from each other. The fundamental components of broadband image contrast are the spectral integrals of the target and background signatures, and this spectral integration can average away the spectral differences between scene objects. In many low broadband image contrast situations, hyperspectral imaging (HSI) can preserve a greater degree of the intrinsic scene spectral contrast for the display, and more display contrast means greater range performance by a trained observer. This paper documents a study using spectral radiometric signature modeling and the U.S. Army’s Night Vision Integrated Performance Model (NV-IPM) to show how waveband selection by a notional HSI sensor using spectral contrast optimization can significantly increase HIL sensor range performance over conventional broadband sensors.

Citation Download Citation

Van A. Hodgkin and Christopher L. Howell "HIL range performance of notional hyperspectral imaging sensors", Proc. SPIE 9820, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXVII, 98200N (3 May 2016); https://doi.org/10.1117/12.2223004

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KEYWORDS

Sensors

Short wave infrared radiation

Reflectivity

Sun

Image sensors

Near infrared

Sensor performance

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