%0 Journal Article %A Ehsan Saghapour and Somayeh Zandian %D 2012 %J International Journal of Biomedical and Biological Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 72, 2012 %T Automatic Segmentation of Retina Vessels by Using Zhang Method %U https://publications.waset.org/pdf/8206 %V 72 %X Image segmentation is an important step in image processing. Major developments in medical imaging allow physicians to use potent and non-invasive methods in order to evaluate structures, performance and to diagnose human diseases. In this study, an active contour was used to extract vessel networks from color retina images. Automatic analysis of retina vessels facilitates calculation of arterial index which is required to diagnose some certain retinopathies. %P 629 - 632