Red-green bicolor photoelasticity using a single-color image

Digendranath Swain; Binu P. Thomas; Jeby Philip

doi:10.1117/1.OE.54.8.081204

26 February 2015 Red-green bicolor photoelasticity using a single-color image

Digendranath Swain, Binu P. Thomas, Jeby Philip

Author Affiliations +

Optical Engineering, Vol. 54, Issue 8, 081204 (February 2015). https://doi.org/10.1117/1.OE.54.8.081204

Abstract

Conventional RGB or tricolor photoelasticity processes the intensity information of the red, green, and blue color planes to demodulate the photoelastic fringe orders (or isochromatics). We explore the possibility of isochromatic demodulation using the intensity data of only the red and green color planes drawn from a single-color image. This would help in avoiding the uncertainties caused due to the blue color plane in RGB photoelasticity. Moreover, a new procedure is proposed for isochromatic demodulation using a synthetically generated look-up table (LUT) to address the tint and intensity variations between the calibration and analysis images. The proposed method has been validated and extended to analyze live models and stress frozen slices. The results show that the proposed bicolor technique has the potential for demodulating higher fringe orders using generic white light sources with acceptable accuracy. Moreover, the bicolor algorithm consumes 13% less computational time than the tricolor algorithm.

Citation Download Citation

Digendranath Swain, Binu P. Thomas, and Jeby Philip "Red-green bicolor photoelasticity using a single-color image," Optical Engineering 54(8), 081204 (26 February 2015). https://doi.org/10.1117/1.OE.54.8.081204

Published: 26 February 2015

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