Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2006:2006:4453-6.
doi: 10.1109/IEMBS.2006.260434.

Automatic image processing algorithm to detect hard exudates based on mixture models

Clara I Sánchez  1 , Agustín Mayo, María García, María I López, Roberto Hornero
Affiliations

Automatic image processing algorithm to detect hard exudates based on mixture models

Clara I Sánchez et al. Conf Proc IEEE Eng Med Biol Soc. 2006.

Abstract

Automatic detection of hard exudates from retinal images is clinically significant. Hard exudates are associated with diabetic retinopathy and have been found to be one of the most prevalent earliest clinical signs of retinopathy. In this study, an automatic method to detect hard exudates is proposed. The algorithm is based on mixture models to dynamically threshold the images in order to separate hard exudates from background. We prospectively assessed the algorithm performance using a database of 20 retinal images with variable color, brightness, and quality. The algorithm obtained a sensitivity of 90.23% and a predictive value of 82.5% using a lesion-based criterion. The image-based classification accuracy is also evaluated obtaining a sensitivity of 100% and a specificity of 90%

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

Publication types