Measuring resolution degradation of long-wavelength infrared imagery in fog
AuthorRedman, Brian J.
van der Laan, John D.
Westlake, Karl R.
Segal, Jacob W.
LaCasse, Charles F.
Sanchez, Andres L.
Wright, Jeremy B.
AffiliationUniv Arizona, Coll Opt Sci
Keywordsdegraded visual environments
modulation transfer function
MetadataShow full item record
CitationBrian J. Redman, John D. van der Laan, Karl R. Westlake, Jacob W. Segal, Charles F. LaCasse, Andres L. Sanchez, and Jeremy B. Wright "Measuring resolution degradation of long-wavelength infrared imagery in fog," Optical Engineering 58(5), 051806 (12 January 2019). https://doi.org/10.1117/1.OE.58.5.051806
RightsCopyright © 2019 Society of Photo-Optical Instrumentation Engineers (SPIE)
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractThe scattering of light in fog is a complex problem that affects imaging in many ways. Typically, imaging device performance in fog is attributed solely to reduced visibility measured as light extinction from scattering events. We present a quantitative analysis of resolution degradation in the long-wave infrared regime. Our analysis is based on the calculation of the modulation transfer function from the edge response of a slant edge blackbody target in known fog conditions. We show higher spatial frequencies attenuate more than low spatial frequencies with increasing fog thickness. These results demonstrate that image blurring, in addition to extinction, contributes to degraded performance of imaging devices in fog environments.
VersionFinal published version
SponsorsU.S. Department of Energy's National Nuclear Security Administration [DE-NA0003525]