The Application Of Phase Stepping To The Analysis Of ESPI Fringe Patterns

D. Kerr; J. R. Tyrer

doi:10.1117/12.941723

17 February 1987 The Application Of Phase Stepping To The Analysis Of ESPI Fringe Patterns

D. Kerr, J. R. Tyrer

Proceedings Volume 0814, Photomechanics and Speckle Metrology; (1987) https://doi.org/10.1117/12.941723
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

Abstract

A detailed investigation has been carried out into the application of digital phase stepping techniques in the computer analysis of Electronic Speckle Pattern Interferometry fringe data. The entire analysis process has been examined from its initial stages of video resolution and digitisation, through to the representation of phase data within a computer matrix for subsequent data analysis. These investigations have utilised standard video analysis equipment as well as specialised analogue and digital devices designed and built in-house. A high resolution, real time digital image processing system has been used in the analysis of the fringe data, for which specific applications software has been designed. A brief description of some of these devices is included, together with the details of their design philosophy and practical application. Each stage of the analysis method has been evaluated from a signal or image processing viewpoint and optimised to give the best results from a phase representation approach. The resulting processing method is described and example images are used to illustrate successive stages.

Citation Download Citation

D. Kerr and J. R. Tyrer "The Application Of Phase Stepping To The Analysis Of ESPI Fringe Patterns", Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); https://doi.org/10.1117/12.941723

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