22 April 2010 Novel methodologies for the measurement of atmospheric turbulence effects
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Abstract
Atmospheric turbulence is an imaging phenomenon that introduces blur, distortion, and intensity fluctuations that corrupt image quality and can decrease target acquisition performance. The modeling of imaging sensors requires an accurate description of turbulence effects. We present two novel methodologies for the measurement of the turbulence MTF in infrared imagery. First, the structural similarity metric is used to compare pristine and degraded imagery. Second, contrast modulations of radial bar targets are analyzed to extract an equivalent blur. Human perception tests are compared against model predictions. The results show that complex turbulence effects can be measured and modeled with simple MTF blurs.
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Richard L. Espinola, Richard L. Espinola, Jae Cha, Jae Cha, Kevin Leonard, Kevin Leonard, } "Novel methodologies for the measurement of atmospheric turbulence effects", Proc. SPIE 7662, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXI, 76620W (22 April 2010); doi: 10.1117/12.852294; https://doi.org/10.1117/12.852294
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