Title :
Fast algorithm for digital retinal image alignment
Author :
Yu, Joseph Jy-Haw ; Hung, Biing-Man ; Liou, Chone-Lin
Author_Institution :
Dept. of Biomed. Eng., Chung Yuan Christian Univ., Chungli, Taiwan
Abstract :
An algorithm based on an automatic multistage, multiple-featured-based registration strategy has been developed to decrease the amount of computation and to increase the speed of alignment for digital retinal images. The retinal image is digitized and processed to detect the location of the optical disk as a coarse feature. The branch point of a retinal vessel is automatically set up as a template by multilevel vessel tracing with adaptive-thresholding, cavity-filling, neighborhood-averaging, and stem-thinning techniques. Flowcharts for the automatic template setup and image alignment are given
Keywords :
computerised picture processing; eye; medical diagnostic computing; adaptive-thresholding; automatic template setup; cavity-filling; coarse feature; digital retinal image alignment; fast algorithm; flowcharts; multiple-featured-based registration strategy; neighborhood-averaging; retinal vessel branch point; stem-thinning; Arteriosclerosis; Biomedical engineering; Biomedical optical imaging; Diseases; Filling; Hypertension; Pixel; Retina; Retinal vessels; Testing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95777
