An interactive visual interface for the determination of similarity patterns in the Fourier spatial frequency spectrum of laser speckle

Sam Payne; Lisa Chan; Wei Cheng Lin; Stewart Russell

doi:10.1117/12.2253984

17 February 2017 An interactive visual interface for the determination of similarity patterns in the Fourier spatial frequency spectrum of laser speckle

Sam Payne, Lisa Chan, Wei Cheng Lin, Stewart Russell

Author Affiliations +

Proceedings Volume 10060, Optical Biopsy XV: Toward Real-Time Spectroscopic Imaging and Diagnosis; 100600P (2017) https://doi.org/10.1117/12.2253984
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Laser speckle from particles that are smaller than the wavelength of light resemble a random Gaussian field, but can be shown to contain a characteristic spectrum in frequency space. Speckle is caused by not only the instantaneous microstructure of nanoparticles in suspension that will fluctuate as they reorganize, but also by the magnetic and optical properties of the scattering medium itself. Here we demonstrate interactive tool that can be used to define similarities between seemingly random scattering fields. Optimization of the Fourier spatial frequency spectrum gives a representative pattern that can be directly correlated to the transport properties of the particles.

Conference Presentation

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Sam Payne, Lisa Chan, Wei Cheng Lin, and Stewart Russell "An interactive visual interface for the determination of similarity patterns in the Fourier spatial frequency spectrum of laser speckle", Proc. SPIE 10060, Optical Biopsy XV: Toward Real-Time Spectroscopic Imaging and Diagnosis, 100600P (17 February 2017); https://doi.org/10.1117/12.2253984

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