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In this paper we are proposing the use of GIMP Retinex, a filter of the GNU Image Manipulation Program, for enhancing foggy images. This filter involves adjusting four different parameters to find the output image which has to be preferred…

Computer Vision and Pattern Recognition · Computer Science 2015-09-30 Roberto Marazzato , Amelia Carolina Sparavigna

Low-light image enhancement task is essential yet challenging as it is ill-posed intrinsically. Previous arts mainly focus on the low-light images captured in the visible spectrum using pixel-wise loss, which limits the capacity of…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Shulin Tian , Yufei Wang , Renjie Wan , Wenhan Yang , Alex C. Kot , Bihan Wen

The most striking successes in image retrieval using deep hashing have mostly involved discriminative models, which require labels. In this paper, we use binary generative adversarial networks (BGAN) to embed images to binary codes in an…

Computer Vision and Pattern Recognition · Computer Science 2017-08-15 Jingkuan Song

The Generative Adversarial Network (GAN) is a state-of-the-art technique in the field of deep learning. A number of recent papers address the theory and applications of GANs in various fields of image processing. Fewer studies, however,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Shuyue Guan , Murray Loew

Despite the breakthroughs in quality of image enhancement, an end-to-end solution for simultaneous recovery of the finer texture details and sharpness for degraded images with low resolution is still unsolved. Some existing approaches focus…

Computer Vision and Pattern Recognition · Computer Science 2019-01-17 Soumya Shubhra Ghosh , Yang Hua , Sankha Subhra Mukherjee , Neil Robertson

Most existing Low-light Image Enhancement (LLIE) methods either directly map Low-Light (LL) to Normal-Light (NL) images or use semantic or illumination maps as guides. However, the ill-posed nature of LLIE and the difficulty of semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Han Zhou , Wei Dong , Xiaohong Liu , Shuaicheng Liu , Xiongkuo Min , Guangtao Zhai , Jun Chen

Since its appearance, Generative Adversarial Networks (GANs) have received a lot of interest in the AI community. In image generation several projects showed how GANs are able to generate photorealistic images but the results so far did not…

Computer Vision and Pattern Recognition · Computer Science 2017-06-02 Marco Marchesi

In practical applications, low-light images are often compressed for efficient storage and transmission. Most existing methods disregard compression artifacts removal or hardly establish a unified framework for joint task enhancement of…

Image and Video Processing · Electrical Eng. & Systems 2026-05-12 Hantang Li , Qiang Zhu , Xiandong Meng , Lei Xiong , Shuyuan Zhu , Xiaopeng Fan

During the past years,deep convolutional neural networks have achieved impressive success in low-light Image Enhancement.Existing deep learning methods mostly enhance the ability of feature extraction by stacking network structures and…

Image and Video Processing · Electrical Eng. & Systems 2021-12-16 Zilong Chen , Yaling Liang , Minghui Du

Imaging under extremely low-light conditions presents a significant challenge and is an ill-posed problem due to the low signal-to-noise ratio (SNR) caused by minimal photon capture. Previously, diffusion models have been used for multiple…

Image and Video Processing · Electrical Eng. & Systems 2024-03-01 Rishit Dagli

Noise, artifacts, and over-exposure are significant challenges in the field of low-light image enhancement. Existing methods often struggle to address these issues simultaneously. In this paper, we propose a novel Retinex-based method,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Yu Wang , Yihong Wang , Tong Liu , Xiubao Sui , Qian Chen

Low-light image enhancement strives to improve the contrast, adjust the visibility, and restore the distortion in color and texture. Existing methods usually pay more attention to improving the visibility and contrast via increasing the…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Huake Wang , Xiaoyang Yan , Xingsong Hou , Junhui Li , Yujie Dun , Kaibing Zhang

Images taken in low light often show color shift, low contrast, noise, and other artifacts that hurt computer-vision accuracy. Retinex theory addresses this by viewing an image S as the pixel-wise product of reflectance R and illumination…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Sos Agaian , Vladimir Frants

We present IllumFlow, a novel framework that synergizes conditional Rectified Flow (CRF) with Retinex theory for low-light image enhancement (LLIE). Our model addresses low-light enhancement through separate optimization of illumination and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Wenyang Wei , Yang yang , Xixi Jia , Xiangchu Feng , Weiwei Wang , Renzhen Wang

Generative Adversarial Networks (GANs) and their extensions have carved open many exciting ways to tackle well known and challenging medical image analysis problems such as medical image de-noising, reconstruction, segmentation, data…

Computer Vision and Pattern Recognition · Computer Science 2019-10-10 Salome Kazeminia , Christoph Baur , Arjan Kuijper , Bram van Ginneken , Nassir Navab , Shadi Albarqouni , Anirban Mukhopadhyay

This paper studies the problem of aligning a set of face images of the same individual into a normalized image while removing the outliers like partial occlusion, extreme facial expression as well as significant illumination variation. Our…

Computer Vision and Pattern Recognition · Computer Science 2019-10-22 Jiabo Huang , Xiaohua Xie , Wei-Shi Zheng

Detecting objects in low-light scenarios presents a persistent challenge, as detectors trained on well-lit data exhibit significant performance degradation on low-light data due to low visibility. Previous methods mitigate this issue by…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Zhipeng Du , Miaojing Shi , Jiankang Deng

Due to the outstanding capability for data generation, Generative Adversarial Networks (GANs) have attracted considerable attention in unsupervised learning. However, training GANs is difficult, since the training distribution is dynamic…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Haozhe Liu , Wentian Zhang , Bing Li , Haoqian Wu , Nanjun He , Yawen Huang , Yuexiang Li , Bernard Ghanem , Yefeng Zheng

In this paper, a novel image enhancement network is proposed, where HDR images are used for generating training data for our network. Most of conventional image enhancement methods, including Retinex based methods, do not take into account…

Computer Vision and Pattern Recognition · Computer Science 2019-01-28 Yuma Kinoshita , Hitoshi Kiya

We consider the single image super-resolution problem in a more general case that the low-/high-resolution pairs and the down-sampling process are unavailable. Different from traditional super-resolution formulation, the low-resolution…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Yuan Yuan , Siyuan Liu , Jiawei Zhang , Yongbing Zhang , Chao Dong , Liang Lin
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