image enhancement
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2023 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Nilesh Bahadure ◽  
SIDHESWAR ROUTRAY ◽  
S. Rajasoundaran ◽  
A.V. Prabu ◽  
V. Pandimurugan ◽  
...  

2022 ◽  
Vol 547 ◽  
pp. 151676
Author(s):  
Mahshid Oladi ◽  
Amir Ghazilou ◽  
Soudabeh Rouzbehani ◽  
Nasim Zarei Polgardani ◽  
Kamalodin Kor ◽  
...  

2022 ◽  
Vol 40 ◽  
pp. 1-12
Author(s):  
Hicham Rezgui ◽  
Messaoud Maouni ◽  
Mohammed Lakhdar Hadji ◽  
Ghassen Touil

In this paper, we present three strong edge stopping functions for image enhancement. These edge stopping functions have the advantage of effectively removing the image noise while preserving the true edges and other important features. The obtained results show an improved quality for the restored images compared to existing restoration models.


2022 ◽  
Vol 8 ◽  
Author(s):  
Cheng Wan ◽  
Xueting Zhou ◽  
Qijing You ◽  
Jing Sun ◽  
Jianxin Shen ◽  
...  

Retinal images are the most intuitive medical images for the diagnosis of fundus diseases. Low-quality retinal images cause difficulties in computer-aided diagnosis systems and the clinical diagnosis of ophthalmologists. The high quality of retinal images is an important basis of precision medicine in ophthalmology. In this study, we propose a retinal image enhancement method based on deep learning to enhance multiple low-quality retinal images. A generative adversarial network is employed to build a symmetrical network, and a convolutional block attention module is introduced to improve the feature extraction capability. The retinal images in our dataset are sorted into two sets according to their quality: low and high quality. Generators and discriminators alternately learn the features of low/high-quality retinal images without the need for paired images. We analyze the proposed method both qualitatively and quantitatively on public datasets and a private dataset. The study results demonstrate that the proposed method is superior to other advanced algorithms, especially in enhancing color-distorted retinal images. It also performs well in the task of retinal vessel segmentation. The proposed network effectively enhances low-quality retinal images, aiding ophthalmologists and enabling computer-aided diagnosis in pathological analysis. Our method enhances multiple types of low-quality retinal images using a deep learning network.


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