Polarization difference image analysis with LC filter |
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Authors: | M Sutkowski P Garbat E Nowinowski-Kruszelnicki A Walczak J Parka J Wo?nicki |
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Institution: | (1) Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, 15/19 Nowowiejska Str., 00-865 Warsaw, Poland;(2) Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland;(3) Institute of Computer Science, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland |
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Abstract: | Image analysis using polarizing methods allows removing the polarized light component from recorded images. This is known
as polarization difference imaging (PDI). The use of liquid crystals (LC) in PDI was proposed in 2002. Modified LC unit with
a properly oriented LC layer was proposed by the authors. The main parameters which characterize an imaging system, employing
a circular LC filter, were determined and presented in previous papers.
In this work, the basics of the circular LC filter construction and theory are presented. Two application configurations of
PDI imaging systems are shown. Experimental results of image processing based on object’s polarization properties are discussed. |
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Keywords: | liquid crystals application polarization difference imaging optical image processing |
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