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Information-efficient spectral imaging sensor

Patent ·
OSTI ID:874984
 [1];  [1];  [1];  [1];  [1];  [2]
  1. Albuquerque, NM
  2. Tucson, AZ
+ Show Author Affiliations
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.
Research Organization:
SANDIA CORP
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
US 6504943
OSTI ID:
874984
Country of Publication:
United States
Language:
English

References (4)

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
  • 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
conference November 1996
HYDICE: an airborne system for hyperspectral imaging
  • 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
conference September 1993

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Related Subjects

/382/348/356/
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