Automatic Segmentation of Retinal Blood Vessels Based on Improved Multiscale Line Detection

Automatic Segmentation of Retinal Blood Vessels Based on Improved Multiscale Line Detection

The appearance of retinal blood vessels is an important diagnostic indicator of serious disease, such as hypertension, diabetes, cardiovascular disease, and stroke. Automatic segmentation of the retinal vasculature is a primary step towards automatic assessment of the retinal blood vessel features. This paper presents an automated method for the enhancement and segmentation of blood vessels in ...

Direction-Based Segmentation of Retinal Blood Vessels

Segmentation of Blood Vessels Using Improved Line Detection and Entropy Based Thresholding

Segmented blood vessel from the fundus image provides useful clinical information for the diagnosis and monitoring of eye diseases. In this paper, blood vessels from the green channel of the fundus image are enhanced using a two dimensional matched filter which enhances the contrast of the blood vessel against the background. The contrast enhanced blood vessels are then segmented using line det...

Segmentation of Retinal Blood Vessels Based on Cake Filter.

Segmentation of retinal blood vessels is significant to diagnosis and evaluation of ocular diseases like glaucoma and systemic diseases such as diabetes and hypertension. The retinal blood vessel segmentation for small and low contrast vessels is still a challenging problem. To solve this problem, a new method based on cake filter is proposed. Firstly, a quadrature filter band called cake filte...

Automatic segmentation of liver region based on extracted blood vessels

With the rapid progress of CT (Computed Tomography) scanners, four-phase CT images with resolutions as high as 1 mm have started to be used for diagnosing liver diseases. The first-, second-, third-, and fourth-phase CT images correspond to before dye injection, the early stage, the full stage, and the wash-out stage of the injected dye. Such CT data offer useful information for diagnosing hepa...