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Single-image dehazing under dense and non-uniform haze conditions remains challenging due to severe information degradation and spatial heterogeneity. Traditional diffusion-based dehazing methods struggle with insufficient generation…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Ruicheng Zhang , Puxin Yan , Zeyu Zhang , Yicheng Chang , Hongyi Chen , Zhi Jin

Optical remote sensing image dehazing presents significant challenges due to its extensive spatial scale and highly non-uniform haze distribution, which traditional single-image dehazing methods struggle to address effectively. While…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Zhicheng Zhao , Jinquan Yan , Chenglong Li , Xiao Wang , Jin Tang

Hazy images are often subject to color distortion, blurring, and other visible quality degradation. Some existing CNN-based methods have great performance on removing homogeneous haze, but they are not robust in non-homogeneous case. The…

Image and Video Processing · Electrical Eng. & Systems 2021-06-22 Minghan Fu , Huan Liu , Yankun Yu , Jun Chen , Keyan Wang

Existing methods have achieved remarkable performance in image dehazing, particularly on synthetic datasets. However, they often struggle with real-world hazy images due to domain shift, limiting their practical applicability. This paper…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Ruiyi Wang , Wenhao Li , Xiaohong Liu , Chunyi Li , Zicheng Zhang , Xiongkuo Min , Guangtao Zhai

Neural-networks based image restoration methods tend to use low-resolution image patches for training. Although higher-resolution image patches can provide more global information, state-of-the-art methods cannot utilize them due to their…

Image and Video Processing · Electrical Eng. & Systems 2019-11-20 Kangfu Mei , Juncheng Li , Jiajie Zhang , Haoyu Wu , Jie Li , Rui Huang

The recent physical model-free dehazing methods have achieved state-of-the-art performances. However, without the guidance of physical models, the performances degrade rapidly when applied to real scenarios due to the unavailable or…

Image and Video Processing · Electrical Eng. & Systems 2021-03-16 Yudong Liang , Bin Wang , Jiaying Liu , Deyu Li , Yuhua Qian , Wenqi Ren

We propose a novel deep neural network architecture for the challenging problem of single image dehazing, which aims to recover the clear image from a degraded hazy image. Instead of relying on hand-crafted image priors or explicitly…

Computer Vision and Pattern Recognition · Computer Science 2018-05-10 Zheng Xu , Xitong Yang , Xue Li , Xiaoshuai Sun

Neural Radiance Field (NeRF) has received much attention in recent years due to the impressively high quality in 3D scene reconstruction and novel view synthesis. However, image degradation caused by the scattering of atmospheric light and…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Tian Li , LU Li , Wei Wang , Zhangchi Feng

Haze severely degrades the visual quality of remote sensing images and hampers the performance of road extraction, vehicle detection, and traffic flow monitoring. The emerging denoising diffusion probabilistic model (DDPM) exhibits the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-18 Jiamei Xiong , Xuefeng Yan , Yongzhen Wang , Wei Zhao , Xiao-Ping Zhang , Mingqiang Wei

Hazy images degrade visual quality, and dehazing is a crucial prerequisite for subsequent processing tasks. Most current dehazing methods rely on neural networks and face challenges such as high computational parameter pressure and weak…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Yutong Chen , Zhang Wen , Chao Wang , Lei Gong , Zhongchao Yi

Single image dehazing is a challenging ill-posed problem due to the severe information degeneration. However, existing deep learning based dehazing methods only adopt clear images as positive samples to guide the training of dehazing…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Haiyan Wu , Yanyun Qu , Shaohui Lin , Jian Zhou , Ruizhi Qiao , Zhizhong Zhang , Yuan Xie , Lizhuang Ma

Haze removal aims to restore a clear image from a hazy input. Existing methods achieve notable success by specializing in either short-range dependencies to preserve local details or long-range dependencies to capture global context. Given…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Xiaozhe Zhang , Fengying Xie , Haidong Ding , Linpeng Pan , Zhenwei Shi

Adverse weather conditions often impair the quality of captured images, inevitably inducing cutting-edge object detection models for advanced driver assistance systems (ADAS) and autonomous driving. In this paper, we raise an intriguing…

Computer Vision and Pattern Recognition · Computer Science 2025-04-03 Yihua Fan , Yongzhen Wang , Mingqiang Wei , Fu Lee Wang , Haoran Xie

While the wisdom of training an image dehazing model on synthetic hazy data can alleviate the difficulty of collecting real-world hazy/clean image pairs, it brings the well-known domain shift problem. From a different yet new perspective,…

Computer Vision and Pattern Recognition · Computer Science 2022-05-05 Yongzhen Wang , Xuefeng Yan , Fu Lee Wang , Haoran Xie , Wenhan Yang , Mingqiang Wei , Jing Qin

Haze removal in aerial images is a challenging problem due to considerable variation in spatial details and varying contrast. Changes in particulate matter density often lead to degradation in visibility. Therefore, several approaches…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Aditya Mehta , Harsh Sinha , Murari Mandal , Pratik Narang

We present an image dehazing algorithm with high quality, wide application, and no data training or prior needed. We analyze the defects of the original dehazing model, and propose a new and reliable dehazing reconstruction and dehazing…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Zheyan Jin , Shiqi Chen , Huajun Feng , Zhihai Xu , Qi Li , Yueting Chen

Nighttime image dehazing is particularly challenging when dense haze and intense glow severely degrade or entirely obscure background information. Existing methods often struggle due to insufficient background priors and limited generative…

Computer Vision and Pattern Recognition · Computer Science 2025-11-21 Beibei Lin , Stephen Lin , Robby Tan

Haze usually leads to deteriorated images with low contrast, color shift and structural distortion. We observe that many deep learning based models exhibit exceptional performance on removing homogeneous haze, but they usually fail to…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Han Zhou , Wei Dong , Yangyi Liu , Jun Chen

To evaluate their performance, existing dehazing approaches generally rely on distance measures between the generated image and its corresponding ground truth. Despite its ability to produce visually good images, using pixel-based or even…

Computer Vision and Pattern Recognition · Computer Science 2020-02-10 Sébastien de Blois , Ihsen Hedhli , Christian Gagné

Model-based single image dehazing algorithms restore haze-free images with sharp edges and rich details for real-world hazy images at the expense of low PSNR and SSIM values for synthetic hazy images. Data-driven ones restore haze-free…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Zhengguo Li , Chaobing Zheng , Haiyan Shu , Shiqian Wu