Circlet Based Framework for Optic Disk Detection Publisher

Summary: Research developed a fast method to locate the optic disc in eye images, aiding diabetes screening. #EyeHealth #MedicalImaging

Sarrafzadeh O¹ ; Rabbani H¹ ; Dehnavi AM¹
Source: Proceedings - International Conference on Image Processing, ICIP Published:2017

Abstract

Optic Disc (OD) detection in retinal fundus images is a crucial stage for the automation of a screening system in diabetic ophthalmology. Most researches for automatic localization of OD benefit the regions of vessels. In this paper, we present a fast and novel method based on the Circlet Transform to detect OD in digital retinal fundus images that doesn't utilize the location of the vessels. First, each R, G and B band is enhanced using CLAHE method. Then, the enhanced image in RGB color space is converted to L-a-b one. Next, the Circlet transform is applied to the L- band, and finally, the Circlet transform coefficients are analyzed to find the location of the OD. The proposed algorithm is implemented on DRIVE dataset and the experimental results show a very well OD localization. The correct rate of the proposed method is 95% even though it doesn't utilize the vessels' structure. © 2017 IEEE.