Polarization difference image analysis with LC filter

• Autorzy: Sutkowski M. , Garbat P. , Nowinowski-Kruszelnicki E. , Walczak A. , Parka J. , Woźnicki J.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

liquid crystals application; polarization difference imaging; optical image processing

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2009
• Tom: Vol. 17, No. 1
• Strony: 53--58
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Sutkowski M.

autor

Garbat P.

autor

Nowinowski-Kruszelnicki E.

autor

Walczak A.

autor

Parka J.

autor

Woźnicki J.

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, 15/19 Nowowiejska Str., 00-865 Warsaw, Poland,

Bibliografia

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• [6] A. Walczak, E. Nowinowski-Kruszelnicki, and R. Wal: Liquid crystal filter for polarization difference imaging. Opto-Electron. Rev. 12, 321-324, 2004.
• [7] A. Walczak, E. Nowinowski-Kruszelnicki, L.R. Jaroszewicz, and R. Wal: Edge detection with liquid crystal polarizing filter. Mol. Cryst. Liq. Cryst. 413, 407, 2004.
• [8] M. Sutkowski, P. Garbat, A. Walczak, E. Nowinowski-Kruszelnicki, and J. Woznicki: Investigations of transmittance of a system with spatial polarization function. Proc. of TPO, Serock, 81-87, 2006. (in Polish)
• [9] R. Deriche: Using Canny's criteria to derive a recursively implemented optimal edge detector. Int. J. Comput. Vision 1, 167-187, 1987.