Holographic particle sizing by using absolute values of the wavelet transform

Joewono Widjaja; Siriwat Soontaranon; Toshimitsu Asakura

doi:10.1117/12.621667

12 April 2005 Holographic particle sizing by using absolute values of the wavelet transform

Joewono Widjaja, Siriwat Soontaranon, Toshimitsu Asakura

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621667
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

Abstract

A new method for sizing particle from in-line Fraunhofer holograms by using absolute values of the wavelet transform is proposed. The method gives zero-crossing points of an envelope function of the hologram which are determined by the particle size. Since the resultant zero-crossing points are functions of the dilation parameter, the frequencies of the fringes at the zero-crossing points are measured. The particle size can be finally calculated from the relationship between the frequencies with the positions of the zero-crossing points. The experimental results agree well with the theory.

Citation Download Citation

Joewono Widjaja, Siriwat Soontaranon, and Toshimitsu Asakura "Holographic particle sizing by using absolute values of the wavelet transform", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621667

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