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Reduction of background clutter in structured lighting systems

Patent ·
OSTI ID:1176394
; ; ; ; ;
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.
Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation
Patent Number(s):
7,742,640
Application Number:
11/580,572
OSTI ID:
1176394
Country of Publication:
United States
Language:
English

References (4)

3-D Computer Vision Using Structured Light: Design, Calibration, and Implementation Issues book January 1996
Sensing and recognition of rigid objects using structured light journal June 1988
Multiple sensor fusion for detecting location of curbs, walls, and barriers conference January 2003
Eye-safe laser line striper for outside use conference January 2003

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Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS