Automatic segmentation of hard exudates in fundus images based on boosted soft segmentation

Author(s):  
Guoliang Fang ◽  
Nan Yang ◽  
Huchuan Lu ◽  
Kaisong Li
2013 ◽  
Vol 22 (01) ◽  
pp. 1250075 ◽  
Author(s):  
NAN YANG ◽  
HU-CHUAN LU ◽  
GUO-LIANG FANG ◽  
GANG YANG

In this paper, we propose an effective framework to automatically segment hard exudates (HEs) in fundus images. Our framework is based on a coarse-to-fine strategy, as we first get a coarse result allowed of some negative samples, then eliminate the negative samples step by step. In our framework, we make the most of the multi-channel information by employing a boosted soft segmentation algorithm. Additionally, we develop a multi-scale background subtraction method to obtain the coarse segmentation result. After subtracting the optical disc (OD) region from the coarse result, the HEs are extracted by a SVM classifier. The main contributions of this paper are: (1) propose an efficient and robust framework for automatic HEs segmentation; (2) present a boosted soft segmentation algorithm to combine multi-channel information; (3) employ a double ring filter to segment and adjust the OD region. We perform our experiments on the pubic DIARETDB1 dateset, which consists of 89 fundus images. The performance of our algorithm is assessed on both lesion-based criterion and image-based criterion. Our experimental results show that the proposed algorithm is very effective and robust.


2020 ◽  
Vol 392 ◽  
pp. 314-324 ◽  
Author(s):  
Song Guo ◽  
Kai Wang ◽  
Hong Kang ◽  
Teng Liu ◽  
Yingqi Gao ◽  
...  
Keyword(s):  

2020 ◽  
Vol 44 (10) ◽  
Author(s):  
Debasis Maji ◽  
Arif Ahmed Sekh

Abstract Automatic grading of retinal blood vessels from fundus image can be a useful tool for diagnosis, planning and treatment of eye. Automatic diagnosis of retinal images for early detection of glaucoma, stroke, and blindness is emerging in intelligent health care system. The method primarily depends on various abnormal signs, such as area of hard exudates, area of blood vessels, bifurcation points, texture, and entropies. The development of an automated screening system based on vessel width, tortuosity, and vessel branching are also used for grading. However, the automated method that directly can come to a decision by taking the fundus images got less attention. Detecting eye problems based on the tortuosity of the vessel from fundus images is a complicated task for opthalmologists. So automated grading algorithm using deep learning can be most valuable for grading retinal health. The aim of this work is to develop an automatic computer aided diagnosis system to solve the problem. This work approaches to achieve an automatic grading method that is opted using Convolutional Neural Network (CNN) model. In this work we have studied the state-of-the-art machine learning algorithms and proposed an attention network which can grade retinal images. The proposed method is validated on a public dataset EIARG1, which is only publicly available dataset for such task as per our knowledge.


2018 ◽  
Vol 66 ◽  
pp. 73-81 ◽  
Author(s):  
Nadia Brancati ◽  
Maria Frucci ◽  
Diego Gragnaniello ◽  
Daniel Riccio ◽  
Valentina Di Iorio ◽  
...  

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