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Method for Reducing Background Clutter in a Camera Image

Sandia National Laboratories

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PDF Document PublicationMarket Sheet (832 KB)

Technology Marketing SummarySandia has developed an eye-safe, robust, lightweight, and low-cost 3D structured lighting sensor for use in broad daylight outdoor applications.  This newly developed sensor overcomes the current limitations of laser-based 3D sensors and can help with threat assessment for first responders, crime scene investigation, and any other scenario which requires accurate 3D mapping.DescriptionCurrently available laser scanners are slow, bulky and heavy, expensive, fragile, short-range, sensitive to vibration, and unreliable for outdoor use in bright sunlight conditions.  The technology developed by Sandia overcomes these limitations and contributes to the realization of intelligent machine systems reducing manpower. Benefits
  • Eye-safe, robust, low cost, and lightweight
  • Vast overall improvement on existing 3D mapping technology
  • Unlike currently available technology, this sensor is eye-safe
  • Overcomes the limitations of current laser-based 3D sensors
Applications and Industries
  • Outdoor 3D Mapping
  • First Responder Threat Assessment
  • Crime Scene Investigation
  • Surveillance Reconnaissance
  • Part Inspection
  • Damage Assessment
  • Construction and Maintenance
More InformationSD# 10018Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Patent 7,742,640
Reduction of background clutter in structured lighting systems
Methods for segmenting the reflected light of an illumination source having a characteristic wavelength from background illumination (i.e. clutter) in structured lighting systems can comprise pulsing the light source used to illuminate a scene, pulsing the light source synchronously with the opening of a shutter in an imaging device, estimating the contribution of background clutter by interpolation of images of the scene collected at multiple spectral bands not including the characteristic wavelength and subtracting the estimated background contribution from an image of the scene comprising the wavelength of the light source and, placing a polarizing filter between the imaging device and the scene, where the illumination source can be polarized in the same orientation as the polarizing filter. Apparatus for segmenting the light of an illumination source from background illumination can comprise an illuminator, an image receiver for receiving images of multiple spectral bands, a processor for calculations and interpolations, and a polarizing filter.
Sandia National Laboratories 06/22/2010
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
US Patent# 7,742,640Prototype - Sandia estimates this technology TRL at level 5. Key elements of the technology have been demonstrated in relevant key environments. Available - Various license and partnering options are available. Please contact the Intellectual Property department to discuss. 08/05/201103/12/2013

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