The Community for Technology Leaders
Proceedings IEEE Workshop on Applications of Computer Vision (1992)
Palm Springs, CA, USA
Nov. 30, 1992 to Dec. 2, 1992
ISBN: 0-8186-2840-5
pp: 120-127
L.B. Wolff , Dept. of Comput. Sci., Johns Hopkins Univ., Baltimore, MD, USA
T.A. Mancini , Dept. of Comput. Sci., Johns Hopkins Univ., Baltimore, MD, USA
ABSTRACT
Presents a fully automated system which unites CCD camera technology with liquid crystal technology to create a polarization camera capable of sensing the polarization of reflected light from objects at pixel resolution. As polarization affords a more general physical description of light than does intensity, it can therefore provide a richer set of descriptive physical constraints for the understanding of images. The authors present a scheme for mapping polarization states into hue, saturation and intensity which is a very convenient representation for a polarization image. The polarization camera outputs such a color image which can then be used in polarization-based vision methods. The unique vision understanding capabilities of the polarization camera system are demonstrated with experimental results showing polarization-based dielectric/metal material classification, specular reflection and occluding contour segmentations in a fairly complex scene, and surface orientation constraints for object recognition.<>
INDEX TERMS
cameras, CCD image sensors, computer vision, liquid crystal displays, polarisation
CITATION

L. Wolff and T. Mancini, "Liquid crystal polarization camera," Proceedings IEEE Workshop on Applications of Computer Vision(ACV), Palm Springs, CA, USA, , pp. 120-127.
doi:10.1109/ACV.1992.240320
96 ms
(Ver 3.3 (11022016))