Segmentation of a class of ophthalmological images using a directional variance operator and co-occurrence arrays

Andrew P. Paplinski; James Frederick Boyce

doi:10.1117/1.601552

1 November 1997 Segmentation of a class of ophthalmological images using a directional variance operator and co-occurrence arrays

Andrew P. Paplinski, James Frederick Boyce

Author Affiliations +

Optical Engineering, Vol. 36, Issue 11, (November 1997). https://doi.org/10.1117/1.601552

The posterior capsule opacification images considered are images of the membrane encapsulating an artificial lens implanted during cataract surgery in place of the natural lens. The images are taken to monitor the state of the patient’s vision after the surgery. Subsequent to the surgery, the membrane of the posterior capsule may become opacified, thus degrading the patient’s vision. We discuss the methodology used and the results obtained in the segmentation of the images into transparent and opacified regions. The opacification is primarily characterized by its texture, therefore a directional standard deviation operator is applied to an image giving rise to a family of ‘‘conjugate’’ images. From these images, the multi-dimensional histogram (co-occurrence) array is calculated and subsequently approximated by Gaussian distributions to form the basis for the segmentation step.

Citation Download Citation

Andrew P. Paplinski and James Frederick Boyce "Segmentation of a class of ophthalmological images using a directional variance operator and co-occurrence arrays," Optical Engineering 36(11), (1 November 1997). https://doi.org/10.1117/1.601552

Published: 1 November 1997

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