Range Imaging for Underwater Vision Enhancement

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Description

This paper presents results from a series of preliminary tests to evaluate a scannerless range-imaging device as a potential sensory enhancement tool for divers and as a potential identification sensor for deployment on small unmanned underwater vehicles. The device, developed by Sandia National Laboratories, forms an image on the basis of point-to-point range to the target rather than an intensity map. The range image is constructed through a classical continuous wave phase detection technique in which the light source is amplitude modulated at radio frequencies. The receiver incorporates a gain-modulated image intensifier, and range information is calculated on the basis ... continued below

Physical Description

11 p.

Creation Information

Rish, J.W.; Blume, B.; Nellums, B.; Sackos, J.; Foster, J. & Wood, J.L. April 19, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 26 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

This paper presents results from a series of preliminary tests to evaluate a scannerless range-imaging device as a potential sensory enhancement tool for divers and as a potential identification sensor for deployment on small unmanned underwater vehicles. The device, developed by Sandia National Laboratories, forms an image on the basis of point-to-point range to the target rather than an intensity map. The range image is constructed through a classical continuous wave phase detection technique in which the light source is amplitude modulated at radio frequencies. The receiver incorporates a gain-modulated image intensifier, and range information is calculated on the basis of the phase difference between the transmitted and reflected signal. The initial feasibility test at the Coastal Systems Station showed the device to be effective at imaging low-contrast underwater targets such as concertina wire. It also demonstrated success at imaging a 21-inch sphere at a depth of 10 feet in the water column through a wavy air-water interface.

Physical Description

11 p.

Notes

OSTI as DE00005836

Medium: P; Size: 11 pages

Source

  • SPIE AeroSense Symposium Conference 3711, Orlando, FL (US), 04/04/1999--04/10/1999

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  • Report No.: SAND99-0974C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 5836
  • Archival Resource Key: ark:/67531/metadc698475

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  • April 19, 1999

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 6, 2017, 7:35 p.m.

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Rish, J.W.; Blume, B.; Nellums, B.; Sackos, J.; Foster, J. & Wood, J.L. Range Imaging for Underwater Vision Enhancement, article, April 19, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc698475/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.