Visual classification of materials using the Stokes vector

Bojian Liang; Andrew M. Wallace; Emanuele Trucco

doi:10.1117/12.364328

16 September 1999 Visual classification of materials using the Stokes vector

Bojian Liang, Andrew M. Wallace, Emanuele Trucco

Proceedings Volume 3826, Polarization and Color Techniques in Industrial Inspection; (1999) https://doi.org/10.1117/12.364328
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

We present an improved method for material classification by measurement of the full Stokes vector of a reflectance image. This approach is based on the observation that linearly polarized light specularly reflected from a dielectric remains linearly polarized but becomes highly unpolarized in off- specular directions. For a metal, the same incident light becomes elliptically polarized on reflection in both the macroscopic specular and non-specular directions except when the orientation of polarization of the incident light is perpendicular to or parallel to the plane of incidence. The novelty and value in comparison with previous approaches is that it removes a number of constraints on system and scene geometry.

Citation Download Citation

Bojian Liang, Andrew M. Wallace, and Emanuele Trucco "Visual classification of materials using the Stokes vector", Proc. SPIE 3826, Polarization and Color Techniques in Industrial Inspection, (16 September 1999); https://doi.org/10.1117/12.364328

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