System and method for detecting daytime solar glint using multi-band mid-wave infrared imagery
US10607104B1 · kind B1 · utility
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Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for processing a daytime IR image to discriminate between solar glints and hotspots, where the latter represent man-made activity. Two spectrally distinct thermal wavelength bands are defined and respective spectral intensities are detected for a corresponding pixel in an image. A figure of merit is calculated as a function of the detected spectral intensities. The calculated figure of merit is compared to a predetermined rule to determine whether the corresponding pixel is a glint or a hotspot.
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