Automatic localization of the optic disc by combining vascular and intensity information

作者：Mendonca Ana Maria^*; Sousa Antonio; Mendonca Luis; Campilho Aurelio

来源：Computerized Medical Imaging and Graphics, 2013, 37(5-6): 409-417.

DOI：10.1016/j.compmedimag.2013.04.004

• Retinal image analysis
• Optic disc localization
• Retinal vessel segmentation
• Entropy

This paper describes a new methodology for automatic location of the optic disc in retinal images, based on the combination of information taken from the blood vessel network with intensity data. The distribution of vessel orientations around an image point is quantified using the new concept of entropy of vascular directions. The robustness of the method for OD localization is improved by constraining the search for maximal values of entropy to image areas with high intensities. The method was able to obtain a valid location for the optic disc in 1357 out of the 1361 images of the four datasets.

• 出版日期2013-9