Title :
Semiautomatic Detection and Evaluation of Autofluorescent Areas in Retinal Images
Author :
Kolar, R. ; Jan, J. ; Laemmer, R. ; Jirik, R.
Author_Institution :
Brno Univ. of Technol., Brno
Abstract :
A semiautomatic approach to the detection and evaluation of the autofluorescent zones in retinal images, recognized as having a diagnostic value, has been designed based on fusing information from two Heidelberg retina angiograph imaging modalities - autofluorescent and infrared modes. The procedure, initiated by automatic preprocessing and region-of-interest determination continues by manually initiated segmentation via constrained region growing and ends with evaluating the size and geometrical coordinates of the AF regions with respect to the centre of the optic disc. Results are compared with those obtained by experienced ophthalmologists.
Keywords :
biomedical optical imaging; eye; fluorescence; infrared imaging; Heidelberg retina angiograph imaging; autofluorescence; infrared modes; region-of-interest determination; retinal images; segmentation; semiautomatic detection; Biomedical optical imaging; Fiber lasers; Image databases; Image resolution; Image segmentation; Infrared detectors; Infrared imaging; Laser modes; Pixel; Retina; Algorithms; Artificial Intelligence; Fluorescein Angiography; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Pattern Recognition, Automated; Reproducibility of Results; Retina; Retinoscopy; Sensitivity and Specificity;
Conference_Titel :
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE
Conference_Location :
Lyon
Print_ISBN :
978-1-4244-0787-3
DOI :
10.1109/IEMBS.2007.4353042
