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Title: Information-efficient spectral imaging sensor

Abstract

A programmable optical filter for use in multispectral and hyperspectral imaging. The filter splits the light collected by an optical telescope into two channels for each of the pixels in a row in a scanned image, one channel to handle the positive elements of a spectral basis filter and one for the negative elements of the spectral basis filter. Each channel for each pixel disperses its light into n spectral bins, with the light in each bin being attenuated in accordance with the value of the associated positive or negative element of the spectral basis vector. The spectral basis vector is constructed so that its positive elements emphasize the presence of a target and its negative elements emphasize the presence of the constituents of the background of the imaged scene. The attenuated light in the channels is re-imaged onto separate detectors for each pixel and then the signals from the detectors are combined to give an indication of the presence or not of the target in each pixel of the scanned scene. This system provides for a very efficient optical determination of the presence of the target, as opposed to the very data intensive data manipulations that are required inmore » conventional hyperspectral imaging systems.

Inventors:
 [1];  [1];  [1];  [1];  [1];  [2]
+ Show Inventor Affiliations
  1. Albuquerque, NM
  2. Tucson, AZ
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
874984
Patent Number(s):
6504943
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G - PHYSICS G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
information-efficient; spectral; imaging; sensor; programmable; optical; filter; multispectral; hyperspectral; splits; light; collected; telescope; channels; pixels; row; scanned; image; channel; handle; positive; elements; basis; negative; pixel; disperses; bins; bin; attenuated; value; associated; element; vector; constructed; emphasize; presence; target; constituents; background; imaged; scene; re-imaged; separate; detectors; signals; combined; indication; provides; efficient; determination; opposed; data; intensive; manipulations; required; conventional; systems; optical filter; light collected; /382/348/356/

Citation Formats

Sweatt, William C, Gentry, Stephen M, Boye, Clinton A, Grotbeck, Carter L, Stallard, Brian R, and Descour, Michael R. Information-efficient spectral imaging sensor. United States: N. p., 2003. Web.
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Sweatt, William C, Gentry, Stephen M, Boye, Clinton A, Grotbeck, Carter L, Stallard, Brian R, & Descour, Michael R. Information-efficient spectral imaging sensor. United States.
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Sweatt, William C, Gentry, Stephen M, Boye, Clinton A, Grotbeck, Carter L, Stallard, Brian R, and Descour, Michael R. Wed . "Information-efficient spectral imaging sensor". United States. https://www.osti.gov/servlets/purl/874984.
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@article{osti_874984,
title = {Information-efficient spectral imaging sensor},
author = {Sweatt, William C and Gentry, Stephen M and Boye, Clinton A and Grotbeck, Carter L and Stallard, Brian R and Descour, Michael R},
abstractNote = {A programmable optical filter for use in multispectral and hyperspectral imaging. The filter splits the light collected by an optical telescope into two channels for each of the pixels in a row in a scanned image, one channel to handle the positive elements of a spectral basis filter and one for the negative elements of the spectral basis filter. Each channel for each pixel disperses its light into n spectral bins, with the light in each bin being attenuated in accordance with the value of the associated positive or negative element of the spectral basis vector. The spectral basis vector is constructed so that its positive elements emphasize the presence of a target and its negative elements emphasize the presence of the constituents of the background of the imaged scene. The attenuated light in the channels is re-imaged onto separate detectors for each pixel and then the signals from the detectors are combined to give an indication of the presence or not of the target in each pixel of the scanned scene. This system provides for a very efficient optical determination of the presence of the target, as opposed to the very data intensive data manipulations that are required in conventional hyperspectral imaging systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}
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Works referenced in this record:

HYDICE: an airborne system for hyperspectral imaging
conference, September 1993

  • Rickard, Lee J.; Basedow, Robert W.; Zalewski, Edward F.
  • Optical Engineering and Photonics in Aerospace Sensing, SPIE Proceedings
  • https://doi.org/10.1117/12.157055

Evolution of the Airborne Visible/Infrared Imaging Spectrometer flight and ground data processing system
conference, September 1990

A System Overview Of The Airborne Visible/Infrared Imaging Spectrometer (Aviris)
conference, January 1987

HYDICE system performance: an update
conference, November 1996

  • Basedow, Robert W.; Aldrich, William S.; Colwell, John E.
  • SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, SPIE Proceedings
  • https://doi.org/10.1117/12.257186
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