Earmarking retinal changes in a sequence of digital color fundus photographs.

Ferreira J., Bernardes R., Baptista P., Cunha-Vaz J.

This paper presents a novel approach for earmarking retinal changes in a sequence of digital color fundus photographs, using Principal Component Analysis (PCA) and a temporal color-coded scheme so as to improve the representation of the global effect of these changes — its aim is to assist graders in detecting alterations on digital color photographic follow-up time-sequences of the human retina. The color-coded scheme was developed so that: the earliest earmarking color of areas which have been detected in multiple instances in the followup timeline is kept; areas which have suffered changes but have returned to their original appearance are earmarked with a specific color-code. The composite image formed by the projection of the color-code image onto the baseline image used as reference then guides the grader’s attention to changes detected on the fundus photographs.

IFMBE Proceedings, Vol. 11. Prague: IFMBE, 2005. ISSN 1727-1983. – Proceedings of the 3rd European Medical & Biological Engineering Conference – EMBEC´05. Prague, Czech Republic, 20-25.11.2005. ID of full-paper followed by page – from 1924-1 to 1924-6.

2005