Contrast enhancement of SWIR images based on four filter discrimination and principle components analysis

Martin Gerken; Harry Schlemmer

doi:10.1117/12.2620649

27 May 2022 Contrast enhancement of SWIR images based on four filter discrimination and principle components analysis

Martin Gerken, Harry Schlemmer

Proceedings Volume 12107, Infrared Technology and Applications XLVIII; 121071J (2022) https://doi.org/10.1117/12.2620649
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

The advantage of shortwave infrared (SWIR) imaging for reconnaissance tasks and the detection of camouflaged objects are known and demonstrated. The realization with an integrated visual and shortwave camera and discrimination with a four-filter shortwave colorimetry of camouflage objects was shown. Multispectral images are captured using four appropriate bandpass filters in a filter wheel and contrast was optimized by a tunable generic bandpass filter based on principal component analysis (PCA). Based on this experience, it is demonstrated that SWIR multispectral imaging can provide longer observation ranges compared to color imaging although the pixels of color cameras are significantly smaller, resulting in higher spatial resolution.

Citation Download Citation

Martin Gerken and Harry Schlemmer "Contrast enhancement of SWIR images based on four filter discrimination and principle components analysis", Proc. SPIE 12107, Infrared Technology and Applications XLVIII, 121071J (27 May 2022); https://doi.org/10.1117/12.2620649

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