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Snow degradations present formidable challenges to the advancement of computer vision tasks by the undesirable corruption in outdoor scenarios. While current deep learning-based desnowing approaches achieve success on synthetic benchmark…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Hongtao Wu , Yijun Yang , Angelica I Aviles-Rivero , Jingjing Ren , Sixiang Chen , Haoyu Chen , Lei Zhu

UAV images are critical for applications such as large-area mapping, infrastructure inspection, and emergency response. However, in real-world flight environments, a single image is often affected by multiple degradation factors, including…

Image and Video Processing · Electrical Eng. & Systems 2026-04-13 Jinquan Yan , Zhicheng Zhao , Zhengzheng Tu , Chenglong Li , Jin Tang , Bin Luo

We propose an enhanced multi-scale network, dubbed GridDehazeNet+, for single image dehazing. The proposed dehazing method does not rely on the Atmosphere Scattering Model (ASM), and an explanation as to why it is not necessarily performing…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Xiaohong Liu , Zhihao Shi , Zijun Wu , Jun Chen

Since rain streaks show a variety of shapes and directions, learning the degradation representation is extremely challenging for single image deraining. Existing methods are mainly targeted at designing complicated modules to implicitly…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Yuhong He , Long Peng , Lu Wang , Jun Cheng

Low-light image enhancement is an important task in computer vision, essential for improving the visibility and quality of images captured in non-optimal lighting conditions. Inadequate illumination can lead to significant information loss…

Computer Vision and Pattern Recognition · Computer Science 2025-05-15 Ezequiel Perez-Zarate , Oscar Ramos-Soto , Chunxiao Liu , Diego Oliva , Marco Perez-Cisneros

Semantic segmentation of nighttime images plays an equally important role as that of daytime images in autonomous driving, but the former is much more challenging due to poor illuminations and arduous human annotations. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2021-04-23 Xinyi Wu , Zhenyao Wu , Hao Guo , Lili Ju , Song Wang

Recent advancements in multi-scale architectures have demonstrated exceptional performance in image denoising tasks. However, existing architectures mainly depends on a fixed single-input single-output Unet architecture, ignoring the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Xu Zhao , Chen Zhao , Xiantao Hu , Hongliang Zhang , Ying Tai , Jian Yang

The adverse haze weather condition has brought considerable difficulties in vision-based environmental applications. While, until now, most of the existing environmental monitoring studies are under ordinary conditions, and the studies of…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Ke Wang , Siyuan Zhang , Junlan Chen , Fan Ren , Lei Xiao

Image dehazing poses significant challenges in environmental perception. Recent research mainly focus on deep learning-based methods with single modality, while they may result in severe information loss especially in dense-haze scenarios.…

Computer Vision and Pattern Recognition · Computer Science 2024-04-12 Meng Yu , Te Cui , Haoyang Lu , Yufeng Yue

In image denoising, deep convolutional neural networks (CNNs) can obtain favorable performance on removing spatially invariant noise. However, many of these networks cannot perform well on removing the real noise (i.e. spatially variant…

Image and Video Processing · Electrical Eng. & Systems 2023-05-09 Wencong Wu , Shijie Liu , Yi Zhou , Yungang Zhang , Yu Xiang

This paper addresses the problem of single image de-raining, that is, the task of recovering clean and rain-free background scenes from a single image obscured by a rainy artifact. Although recent advances adopt real-world time-lapse data…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Jaehoon Cho , Seungryong Kim , Kwanghoon Sohn

All-in-one image restoration aims to recover clean images from diverse unknown degradations using a single model. But extending this task to videos faces unique challenges. Existing approaches primarily focus on frame-wise degradation…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Wenrui Li , Hongtao Chen , Yao Xiao , Wangmeng Zuo , Jiantao Zhou , Yonghong Tian , Xiaopeng Fan

Rain in the dark poses a significant challenge to deploying real-world applications such as autonomous driving, surveillance systems, and night photography. Existing low-light enhancement or deraining methods struggle to brighten low-light…

Image and Video Processing · Electrical Eng. & Systems 2024-06-18 Xin Lin , Jingtong Yue , Sixian Ding , Chao Ren , Lu Qi , Ming-Hsuan Yang

Image restoration (IR) aims to recover clean images from degraded observations. Despite remarkable progress, most existing methods focus on a single degradation type, whereas real-world images often suffer from multiple coexisting…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Hu Gao , Xiaoning Lei , Ying Zhang , Xichen Xu , Guannan Jiang , Lizhuang Ma

Images with haze of different varieties often pose a significant challenge to dehazing. Therefore, guidance by estimates of haze parameters related to the variety would be beneficial, and their progressive update jointly with haze reduction…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Aupendu Kar , Sobhan Kanti Dhara , Debashis Sen , Prabir Kumar Biswas

Rain removal in images/videos is still an important task in computer vision field and attracting attentions of more and more people. Traditional methods always utilize some incomplete priors or filters (e.g. guided filter) to remove rain…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Yinglong Wang , Qinfeng Shi , Ehsan Abbasnejad , Chao Ma , Xiaoping Ma , Bing Zeng

This paper is on image and face super-resolution. The vast majority of prior work for this problem focus on how to increase the resolution of low-resolution images which are artificially generated by simple bilinear down-sampling (or in a…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Adrian Bulat , Jing Yang , Georgios Tzimiropoulos

Rain streaks bring complicated pixel intensity changes and additional gradients, greatly obstructing the extraction of image features from background. This causes serious performance degradation in feature-based applications. Thus, it is…

Image and Video Processing · Electrical Eng. & Systems 2023-11-02 Wei Wu , Hao Chang , Zhu Li

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

We propose a large-scale dataset of real-world rainy and clean image pairs and a method to remove degradations, induced by rain streaks and rain accumulation, from the image. As there exists no real-world dataset for deraining, current…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Yunhao Ba , Howard Zhang , Ethan Yang , Akira Suzuki , Arnold Pfahnl , Chethan Chinder Chandrappa , Celso de Melo , Suya You , Stefano Soatto , Alex Wong , Achuta Kadambi