We report a novel application of polarization based vision addressing the robustness of laser triangulation range sensors. Such sensors are based on the accurate detection of a pattern of laser light projected onto a scene, usually a point or line. Typical problems arise with highly specularly reflective surfaces, which can generate visible reflections of the light in various parts of the image. This can confuse the detection algorithms and lead to wrong range measurements. This paper demonstrates experimentally the feasibility of polarization based vision for disambiguating multiple specular inter reflections of the laser light. We concentrate on metal components as they have high interest for inspection in manufacturing, and show positive results with situations of various complexities.<>
Improving laser triangulation sensors using polarization
01.01.1995
516788 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Improving Laser Triangulation Sensors Using Polarization
British Library Conference Proceedings | 1995
|Advanced Triangulation Displacement Sensors
NTRS | 1996
|Advanced Triangulation Displacement Sensors
Online Contents | 1996
Pipe eccentricity measurement using laser triangulation
British Library Online Contents | 2007
|Robot-based inline 2D/3D quality monitoring using picture-giving and laser triangulation sensors
Fraunhofer Publica | 2009
|