Date of Award

Summer 1989

Degree Type

Thesis - Restricted

Degree Name

Master of Science (MS)



First Advisor

Matthys, Donald

Second Advisor

Browning, Lary M.

Third Advisor

McCarthy, Bruce J.


Although holo-interferometry has long been recognized for its ability to obtain quantitative measurements of minute surface displacements, it has not yet found widespread practical applications. Part of the reason for this is that variations in the reflectivity of the surface often make analysis of the holo-interferogram impossible or highly problematic. In this paper we investigate a filtering technique which uses separate images of the object and holographic image to compensate for variations in surface reflectivity and non-uniform illuminations. We also examine the application of this technique to a new method of holointerferogram analysis, the inverse cosine method.