Method for performing automated in-scene based atmospheric compensation for multi-and hyperspectral imaging sensors in the solar reflective spectral region

US6909815B2 · kind B2 · utility

Assignee

• Spectral Sciences, Inc. · US

Inventors

• Lawrence S. Bernstein · Bedford, US
• Steven Adler-Golden · Newton, US
• Timothy C. Perkins · Watertown, US
• Alexander Berk · Canton, US
• Robert Y. Levine · Carlisle, US

Key dates

• Filing date: Jan 31, 2003
• Grant date: Jun 21, 2005
• Expiry date: Jun 18, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/1793
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of automatically compensating a multi- or hyper-spectral, multi-pixel image for atmospheric effects, comprising resolving a plurality of spectrally-diverse pixels from the image, determining a spectral baseline from the spectrally-diverse pixels, determining a statistical spectral deviation of the spectrally-diverse pixels, normalizing the statistical spectral deviation by applying a scale factor, and compensating image pixels with both the spectral baseline and the normalized spectral deviation. Another embodiment features a method of automatically determining a measure of atmospheric aerosol optical properties using a multi- or hyper-spectral, multi-pixel image, comprising resolving a plurality of spectrally-diverse pixels from the image, determining a statistical spectral deviation of the spectrally-diverse pixels, correcting the statistical spectral deviation for non-aerosol transmittance losses, and deriving from the statistical spectral deviation one or more wavelength-dependent aerosol optical depths. A final embodiment features a method of automatically determining a measure of atmospheric gaseous optical properties using a multi- or hyper-spectral, multi-pixel ima…