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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 19 — Jul. 1, 2009
  • pp: 3537–3556

Infrared sensor modeling for human activity discrimination tasks in urban and maritime environments

Dawne M. Deaver, Eric Flug, Evelyn Boettcher, Stevie R. Smith, and Brian Miller  »View Author Affiliations


Applied Optics, Vol. 48, Issue 19, pp. 3537-3556 (2009)
http://dx.doi.org/10.1364/AO.48.003537


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Abstract

The United States military is increasingly using infrared (IR) sensors to discriminate the actions and intentions of people being observed in an area of interest; however, there is currently inadequate modeling capability to a priori determine the effectiveness of IR sensors for these types of tasks. The U.S. Army’s NVTherm model is a military and industry standard sensor performance model that estimates target acquisition performance based on both the sensor design parameters and an empirically measured calibration factor to represent human observer performance. Historically the model has been calibrated by presenting static imagery to observers and measuring average probabilities of accomplishing the given task. The task of human activity discrimination, however, presents new challenges to the model, as “activity” inherently implies a dynamic scene where motion cues are essential in accomplishing the task. A series of studies has been completed in order to calibrate NVTherm for the task of human activity discrimination. The challenges involved in representing the human activity task, the establishment of new processing methods, and new standards for defining simple target metrics for complex imagery are discussed. The experiments that have supported the calculation of new calibration parameters are also described. These efforts have brought the U.S. Army significantly closer to having a sensor performance model validated for discriminating human activity with IR sensors.

© 2009 Optical Society of America

OCIS Codes
(110.3000) Imaging systems : Image quality assessment
(110.3080) Imaging systems : Infrared imaging
(110.6820) Imaging systems : Thermal imaging
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5020) Vision, color, and visual optics : Perception psychology
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Imaging Systems

History
Original Manuscript: March 13, 2009
Revised Manuscript: May 28, 2009
Manuscript Accepted: June 2, 2009
Published: June 22, 2009

Virtual Issues
Vol. 4, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Dawne M. Deaver, Eric Flug, Evelyn Boettcher, Stevie R. Smith, and Brian Miller, "Infrared sensor modeling for human activity discrimination tasks in urban and maritime environments," Appl. Opt. 48, 3537-3556 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-19-3537


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References

  1. U.S. Army Research Development and Engineering Command, Communications and Electronics Research Development and Engineering Center, Night Vision and Electronics Sensors Directorate (NVESD).
  2. U.S. Navy Office of Naval Research (ONR).
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