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Although deep convolutional neural networks have achieved remarkable success in removing synthetic fog, it is essential to be able to process images taken in complex foggy conditions, such as dense or non-homogeneous fog, in the real world.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-10 Shengli Zhang , Zhiyong Tao , Sen Lin

Single image dehazing is a critical image pre-processing step for subsequent high-level computer vision tasks. However, it remains challenging due to its ill-posed nature. Existing dehazing models tend to suffer from model overcomplexity…

Computer Vision and Pattern Recognition · Computer Science 2019-07-09 Jing Zhang , Dacheng Tao

This paper introduces a novel partial differential equation (PDE) framework for single-image dehazing. We embed the atmospheric scattering model into a PDE featuring edge-preserving diffusion and a nonlocal operator to maintain both local…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Liubing Hu , Pu Wang , Guangwei Gao , Chunyan Wang , Zhuoran Zheng

High dynamic range (HDR) imaging is an important task in image processing that aims to generate well-exposed images in scenes with varying illumination. Although existing multi-exposure fusion methods have achieved impressive results,…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Jun Xiao , Qian Ye , Tianshan Liu , Cong Zhang , Kin-Man Lam

Conventional CNNs-based dehazing models suffer from two essential issues: the dehazing framework (limited in interpretability) and the convolution layers (content-independent and ineffective to learn long-range dependency information). In…

Computer Vision and Pattern Recognition · Computer Science 2022-01-06 Dong Zhao , Jia Li , Hongyu Li , Long Xu

Currently, mobile and IoT devices are in dire need of a series of methods to enhance 4K images with limited resource expenditure. The absence of large-scale 4K benchmark datasets hampers progress in this area, especially for dehazing. The…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Zhuoran Zheng , Xiuyi Jia

Medical image segmentation grapples with challenges including multi-scale lesion variability, ill-defined tissue boundaries, and computationally intensive processing demands. This paper proposes the DyGLNet, which achieves efficient and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Yican Zhao , Ce Wang , You Hao , Lei Li , Tianli Liao

Aiming at the existing single image haze removal algorithms, which are based on prior knowledge and assumptions, subject to many limitations in practical applications, and could suffer from noise and halo amplification. An end-to-end system…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Yuwen Li , Chaobing Zheng , Shiqian Wu , Wangming Xu

Segmentation of ultra-high resolution images is increasingly demanded, yet poses significant challenges for algorithm efficiency, in particular considering the (GPU) memory limits. Current approaches either downsample an ultra-high…

Computer Vision and Pattern Recognition · Computer Science 2021-03-04 Wuyang Chen , Ziyu Jiang , Zhangyang Wang , Kexin Cui , Xiaoning Qian

Multiple medical institutions collaboratively training a model using federated learning (FL) has become a promising solution for maximizing the potential of data-driven models, yet the non-independent and identically distributed (non-iid)…

Image and Video Processing · Electrical Eng. & Systems 2022-04-26 Meirui Jiang , Zirui Wang , Qi Dou

Single-image super-resolution is a fundamental task for vision applications to enhance the image quality with respect to spatial resolution. If the input image contains degraded pixels, the artifacts caused by the degradation could be…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Xinyi Zhang , Hang Dong , Zhe Hu , Wei-Sheng Lai , Fei Wang , Ming-Hsuan Yang

Image dehazing is quite challenging in dense-haze scenarios, where quite less original information remains in the hazy image. Though previous methods have made marvelous progress, they still suffer from information loss in content and color…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Hu Yu , Jie Huang , Kaiwen Zheng , Feng Zhao

Overfitting to synthetic training pairs remains a critical challenge in image dehazing, leading to poor generalization capability to real-world scenarios. To address this issue, existing approaches utilize unpaired realistic data for…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Haoyou Deng , Zhiqiang Li , Feng Zhang , Qingbo Lu , Zisheng Cao , Yuanjie Shao , Shuhang Gu , Changxin Gao , Nong Sang

Image dehazing aims to restore image clarity and visual quality by reducing atmospheric scattering and absorption effects. While deep learning has made significant strides in this area, more and more methods are constrained by network…

Computer Vision and Pattern Recognition · Computer Science 2024-09-16 Wang Yinglong , He Bin

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

Existing real-world image dehazing methods primarily attempt to fine-tune pre-trained models or adapt their inference procedures, thus heavily relying on the pre-trained models and associated training data. Moreover, restoring heavily…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Ruiyi Wang , Yushuo Zheng , Zicheng Zhang , Chunyi Li , Shuaicheng Liu , Guangtao Zhai , Xiaohong Liu

Image-to-image translation based on generative adversarial network (GAN) has achieved state-of-the-art performance in various image restoration applications. Single image dehazing is a typical example, which aims to obtain the haze-free…

Image and Video Processing · Electrical Eng. & Systems 2022-10-11 Shichao Kan , Yue Zhang , Fanghui Zhang , Yigang Cen

Low-Light Enhancement (LLE) is aimed at improving the quality of photos/videos captured under low-light conditions. It is worth noting that most existing LLE methods do not take advantage of geometric modeling. We believe that incorporating…

Computer Vision and Pattern Recognition · Computer Science 2025-08-25 Yingqi Lin , Xiaogang Xu , Jiafei Wu , Yan Han , Zhe Liu

Nighttime images captured under hazy conditions suffer from severe quality degradation, including low visibility, color distortion, and reduced contrast, caused by the combined effects of atmospheric scattering, absorption by suspended…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Francesco Moretti , Giulia Bianchi , Andrea Gallo

Image deblurring aims to restore a high-quality image from its corresponding blurred. The emergence of CNNs and Transformers has enabled significant progress. However, these methods often face the dilemma between eliminating long-range…

Computer Vision and Pattern Recognition · Computer Science 2024-04-08 Hu Gao , Depeng Dang