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Learning-based methods have attracted a lot of research attention and led to significant improvements in low-light image enhancement. However, most of them still suffer from two main problems: expensive computational cost in high resolution…

Computer Vision and Pattern Recognition · Computer Science 2023-10-03 Jiancheng Huang , Yifan Liu , Shifeng Chen

Despite its wide use in medicine, ultrasound imaging faces several challenges related to its poor signal-to-noise ratio and several sources of noise and artefacts. Enhancing ultrasound image quality involves balancing concurrent factors…

Computer Vision and Pattern Recognition · Computer Science 2024-10-28 Yuxin Zhang , Clément Huneau , Jérôme Idier , Diana Mateus

Image enhancement finds wide-ranging applications in real-world scenarios due to complex environments and the inherent limitations of imaging devices. Recent diffusion-based methods yield promising outcomes but necessitate prolonged and…

Computer Vision and Pattern Recognition · Computer Science 2025-04-23 Yixuan Zhu , Haolin Wang , Ao Li , Wenliang Zhao , Yansong Tang , Jingxuan Niu , Lei Chen , Jie Zhou , Jiwen Lu

Classification of partially occluded images is a highly challenging computer vision problem even for the cutting edge deep learning technologies. To achieve a robust image classification for occluded images, this paper proposes a novel…

Computer Vision and Pattern Recognition · Computer Science 2020-01-14 Feng Cen , Guanghui Wang

Image super-resolution is a fundamentally ill-posed problem because multiple valid high-resolution images exist for one low-resolution image. Super-resolution methods based on diffusion probabilistic models can deal with the ill-posed…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Yutao Yuan , Chun Yuan

Underwater images suffer from wavelength-dependent light absorption and scattering, which reduces visual quality. This phenomenon could limit the operational reliability of autonomous underwater vehicles, marine surveys, and offshore…

Image and Video Processing · Electrical Eng. & Systems 2026-05-14 Sahana Ray , Sanjay Ghosh

Unsupervised monocular depth estimation has received widespread attention because of its capability to train without ground truth. In real-world scenarios, the images may be blurry or noisy due to the influence of weather conditions and…

Computer Vision and Pattern Recognition · Computer Science 2025-10-29 Runze Liu , Dongchen Zhu , Guanghui Zhang , Yue Xu , Wenjun Shi , Xiaolin Zhang , Lei Wang , Jiamao Li

The field of text-to-image generation has undergone significant advancements with the introduction of diffusion models. Nevertheless, the challenge of editing real images persists, as most methods are either computationally intensive or…

Computer Vision and Pattern Recognition · Computer Science 2025-07-16 Guillermo Gomez-Trenado , Pablo Mesejo , Oscar Cordón , Stéphane Lathuilière

Enhancing low-light images while maintaining natural colors is a challenging problem due to camera processing variations and limited access to photos with ground-truth lighting conditions. The latter is a crucial factor for supervised…

Computer Vision and Pattern Recognition · Computer Science 2023-10-17 Wojciech Kozłowski , Michał Szachniewicz , Michał Stypułkowski , Maciej Zięba

Robust invisible watermarking aims to embed hidden information into images such that the watermark can survive various image manipulations. However, the rise of powerful diffusion-based image generation and editing techniques poses a new…

Computer Vision and Pattern Recognition · Computer Science 2025-10-08 Yunyi Ni , Finn Carter , Ze Niu , Emily Davis , Bo Zhang

Underwater image enhancement (UIE) is a highly challenging task due to the complexity of underwater environment and the diversity of underwater image degradation. Due to the application of deep learning, current UIE methods have made…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Yi Liu , Qiuping Jiang , Xinyi Wang , Ting Luo , Jingchun Zhou

Real-world low-light images captured by imaging devices suffer from poor visibility and require a domain-specific enhancement to produce artifact-free outputs that reveal details. In this paper, we propose an unpaired low-light image…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Aupendu Kar , Sobhan K. Dhara , Debashis Sen , Prabir K. Biswas

In real underwater environments, downstream image recognition tasks such as semantic segmentation and object detection often face challenges posed by problems like blurring and color inconsistencies. Underwater image enhancement (UIE) has…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Bosen Lin , Feng Gao , Yanwei Yu , Junyu Dong , Qian Du

Maritime images captured under low-light imaging condition easily suffer from low visibility and unexpected noise, leading to negative effects on maritime traffic supervision and management. To promote imaging performance, it is necessary…

Image and Video Processing · Electrical Eng. & Systems 2020-08-11 Yu Guo , Yuxu Lu , Ryan Wen Liu , Meifang Yang , Kwok Tai Chui

Unsupervised cross-domain image retrieval (UCIR) aims to retrieve images of the same category across diverse domains without relying on annotations. Existing UCIR methods, which align cross-domain features for the entire image, often…

Computer Vision and Pattern Recognition · Computer Science 2025-09-05 Ruohong Yang , Peng Hu , Yunfan Li , Xi Peng

Autonomous underwater navigation remains a challenging problem due to limited sensing capabilities and the difficulty of constructing accurate maps in underwater environments. In this paper, we propose a Diffusion-based Underwater Visual…

Robotics · Computer Science 2025-09-04 Jinghe Yang , Minh-Quan Le , Mingming Gong , Ye Pu

Deepfakes pose significant security and privacy threats through malicious facial manipulations. While robust watermarking can aid in authenticity verification and source tracking, existing methods often lack the sufficient robustness…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Chen Sun , Haiyang Sun , Zhiqing Guo , Yunfeng Diao , Liejun Wang , Dan Ma , Gaobo Yang , Keqin Li

Deep neural networks have recently achieved significant advancements in remote sensing superresolu-tion (SR). However, most existing methods are limited to low magnification rates (e.g., 2 or 4) due to the escalating ill-posedness at higher…

Image and Video Processing · Electrical Eng. & Systems 2024-12-30 Yue Shi , Liangxiu Han , Darren Dancy , Lianghao Han

Diffusion-based methods, leveraging pre-trained large models like Stable Diffusion via ControlNet, have achieved remarkable performance in several low-level vision tasks. However, Pre-Trained Diffusion-Based (PTDB) methods often sacrifice…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Xiaogang Xu , Jian Wang , Yunfan Lu , Ruihang Chu , Ruixing Wang , Jiafei Wu , Bei Yu , Liang Lin

3D photography renders a static image into a video with appealing 3D visual effects. Existing approaches typically first conduct monocular depth estimation, then render the input frame to subsequent frames with various viewpoints, and…

Computer Vision and Pattern Recognition · Computer Science 2023-02-22 Xiaodong Wang , Chenfei Wu , Shengming Yin , Minheng Ni , Jianfeng Wang , Linjie Li , Zhengyuan Yang , Fan Yang , Lijuan Wang , Zicheng Liu , Yuejian Fang , Nan Duan