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Low-light images suffer from severe noise and low illumination. Current deep learning models that are trained with real-world images have excellent noise reduction, but a ratio parameter must be chosen manually to complete the enhancement…

Image and Video Processing · Electrical Eng. & Systems 2020-04-23 Qingxu Fu , Xiaoguang Di , Yu Zhang

Due to the singularity of real-world paired datasets and the complexity of low-light environments, this leads to supervised methods lacking a degree of scene generalisation. Meanwhile, limited by poor lighting and content guidance, existing…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Jinhong He , Shivakumara Palaiahnakote , Aoxiang Ning , Minglong Xue

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

We propose a novel learning method to rectify document images with various distortion types from a single input image. As opposed to previous learning-based methods, our approach seeks to first learn the distortion flow on input image…

Computer Vision and Pattern Recognition · Computer Science 2019-09-23 Xiaoyu Li , Bo Zhang , Jing Liao , Pedro V. Sander

Image restoration tasks demand a complex balance between spatial details and high-level contextualized information while recovering images. In this paper, we propose a novel synergistic design that can optimally balance these competing…

Computer Vision and Pattern Recognition · Computer Science 2021-03-17 Syed Waqas Zamir , Aditya Arora , Salman Khan , Munawar Hayat , Fahad Shahbaz Khan , Ming-Hsuan Yang , Ling Shao

Learning-based methods have made promising advances in low-light RAW image enhancement, while their capability to extremely dark scenes where the environmental illuminance drops as low as 0.0001 lux remains to be explored due to the lack of…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Hai Jiang , Binhao Guan , Zhen Liu , Xiaohong Liu , Jian Yu , Zheng Liu , Songchen Han , Shuaicheng Liu

It is very challenging to reconstruct a high dynamic range (HDR) from a low dynamic range (LDR) image as an ill-posed problem. This paper proposes a luminance attentive network named LANet for HDR reconstruction from a single LDR image. Our…

Computer Vision and Pattern Recognition · Computer Science 2021-09-15 Hanning Yu , Wentao Liu , Chengjiang Long , Bo Dong , Qin Zou , Chunxia Xiao

Recent adaptations can boost the low-shot capability of Contrastive Vision-Language Pre-training (CLIP) by effectively facilitating knowledge transfer. However, these adaptation methods are usually operated on the global view of an input…

Computer Vision and Pattern Recognition · Computer Science 2024-07-22 Jinda Lu , Shuo Wang , Yanbin Hao , Haifeng Liu , Xiang Wang , Meng Wang

All-in-one image restoration aims to handle diverse degradations within a single model. However, existing methods often suffer from three key limitations: 1) per-input computational overhead from dynamic degradation estimation; 2)…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Ao Li , Xiaoning Liu , Sheng Li , Yapeng Du , Zhen Long , Lei Luo , Le Zhang , Ce Zhu

A novel method of contrast enhancement is proposed for underexposed images, in which heavy noise is hidden. Under low light conditions, images taken by digital cameras have low contrast in dark or bright regions. This is due to a limited…

Multimedia · Computer Science 2019-04-26 Chien-Cheng Chien , Yuma Kinoshita , Hitoshi Kiya

Unlike single image task, stereo image enhancement can use another view information, and its key stage is how to perform cross-view feature interaction to extract useful information from another view. However, complex noise in low-light…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Minghua Zhao , Xiangdong Qin , Shuangli Du , Xuefei Bai , Jiahao Lyu , Yiguang Liu

Low-light image enhancement (LLIE) is an ill-posed inverse problem due to the lack of knowledge of the desired image which is obtained under ideal illumination conditions. Low-light conditions give rise to two main issues: a suppressed…

Computer Vision and Pattern Recognition · Computer Science 2023-05-19 Mustafa Ozcan , Hamza Ergezer , Mustafa Ayazaoglu

Image retargeting is the task of making images capable of being displayed on screens with different sizes. This work should be done so that high-level visual information and low-level features such as texture remain as intact as possible to…

Computer Vision and Pattern Recognition · Computer Science 2019-10-18 Mahdi Ahmadi , Nader Karimi , Shadrokh Samavi

Low-light imaging is challenging since images may appear to be dark and noised due to low signal-to-noise ratio, complex image content, and the variety in shooting scenes in extreme low-light condition. Many methods have been proposed to…

Image and Video Processing · Electrical Eng. & Systems 2020-05-19 Keqi Wang , Peng Gao , Steven Hoi , Qian Guo , Yuhua Qian

Linear Array Pushbroom (LAP) imaging technology is widely used in the realm of remote sensing. However, images acquired through LAP always suffer from distortion and blur because of camera jitter. Traditional methods for restoring LAP…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Zida Chen , Ziran Zhang , Haoying Li , Menghao Li , Yueting Chen , Qi Li , Huajun Feng , Zhihai Xu , Shiqi Chen

Image harmonization aims to solve the visual inconsistency problem in composited images by adaptively adjusting the foreground pixels with the background as references. Existing methods employ local color transformation or region matching…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Xintian Shen , Jiangning Zhang , Jun Chen , Shipeng Bai , Yue Han , Yabiao Wang , Chengjie Wang , Yong Liu

We address the challenge of relighting a single image or video, a task that demands precise scene intrinsic understanding and high-quality light transport synthesis. Existing end-to-end relighting models are often limited by the scarcity of…

Computer Vision and Pattern Recognition · Computer Science 2025-06-19 Kai He , Ruofan Liang , Jacob Munkberg , Jon Hasselgren , Nandita Vijaykumar , Alexander Keller , Sanja Fidler , Igor Gilitschenski , Zan Gojcic , Zian Wang

Visual grounding focuses on establishing fine-grained alignment between vision and natural language, which has essential applications in multimodal reasoning systems. Existing methods use pre-trained query-agnostic visual backbones to…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Jiabo Ye , Junfeng Tian , Ming Yan , Xiaoshan Yang , Xuwu Wang , Ji Zhang , Liang He , Xin Lin

Faithful manipulation of shape, material, and illumination in 2D Internet images would greatly benefit from a reliable factorization of appearance into material (i.e., diffuse and specular) and illumination (i.e., environment maps). On the…

Graphics · Computer Science 2017-11-15 Tuanfeng Y. Wang , Tobias Ritschel , Niloy J. Mitra

Recently, Fourier frequency information has attracted much attention in Low-Light Image Enhancement (LLIE). Some researchers noticed that, in the Fourier space, the lightness degradation mainly exists in the amplitude component and the rest…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Chenxi Wang , Hongjun Wu , Zhi Jin