Speckle statistics of articulating objects

Date of Award

2011

Degree Name

M.S. in Electro-Optics

Department

Department of Electro-Optics and Photonics

Advisor/Chair

Advisor: Edward Watson

Abstract

This thesis documents research to determine if an articulating objects speckle can be used to identify properties of said object. Speckle is an interference phenomenon that is created by coherent light scattering off a rough surface, which creates various path lengths to the observation plane. It was thought that as an object articulates, the average speckle size would vary as time evolved. The average speckle size can be estimated though the speckle field correlation, which is documented to be dependent on two factors: the irradiance distribution of the object, and the correlation properties of the materials composing the target. The irradiance distribution describes the shape and motion of the illuminated object. Its contribution to an object's speckle pattern was first examined through MATLAB modeling, where those results were tested within laboratory experiments. The understanding of the contribution of the materials composing the object was investigated through recording the speckle pattern of various materials within the lab. The collected speckle irradiance distributions could then be used to determine the correlation properties of that material, which could then be compared to the other materials analyzed.

Keywords

Speckle Research, Speckle Industrial applications, Spectral irradiance Industrial applications

Rights Statement

Copyright © 2011, author

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