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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.« less

Inventors:
 [1];  [1];  [1];  [1];  [1];  [2]
  1. (Albuquerque, NM)
  2. (Tucson, AZ)
Publication Date:
Research Org.:
SANDIA CORP
OSTI Identifier:
874984
Patent Number(s):
US 6504943
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
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.
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.
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.
@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 = {Wed Jan 01 00:00:00 EST 2003},
month = {Wed Jan 01 00:00:00 EST 2003}
}

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