Optical aberrations in underwater holography and their compensation

John Watson; J. M. Kilpatrick

doi:10.1117/12.44733

1 July 1991 Optical aberrations in underwater holography and their compensation

John Watson, J. M. Kilpatrick

Proceedings Volume 1461, Practical Holography V; (1991) https://doi.org/10.1117/12.44733
Event: Electronic Imaging '91, 1991, San Jose, CA, United States

Abstract

Underwater holography is attracting attention in the offshore oil and gas industries as a potential technique for high-resolution inspection and measurement of subsea structures and components. Real image reconstruction in the laboratory is employed to produce a high- fidelity image of the underwater scene upon which direct dimensional measurement may be performed. The refractive index change between recording in water and replaying in air introduces aberrations, like those observed by viewing an object from air at the bottom of a swimming pool, into the replayed image. The authors discuss the influence of such aberrations on the fidelity of underwater holograms and report experimental verification of a simple and effective method of minimizing their effect, by replaying in-air at a wavelength reduced in proportion to the refractive index of water.

Citation Download Citation

John Watson and J. M. Kilpatrick "Optical aberrations in underwater holography and their compensation", Proc. SPIE 1461, Practical Holography V, (1 July 1991); https://doi.org/10.1117/12.44733

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available