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Understanding illumination and reducing the need for supervision pose a significant challenge in low-light enhancement. Current approaches are highly sensitive to data usage during training and illumination-specific hyper-parameters,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Wenjing Wang , Huan Yang , Jianlong Fu , Jiaying Liu

When capturing images in low-light conditions, the images often suffer from low visibility, which not only degrades the visual aesthetics of images, but also significantly degenerates the performance of many computer vision algorithms. In…

Computer Vision and Pattern Recognition · Computer Science 2020-12-17 Lijun Zhang , Xiao Liu , Erik Learned-Miller , Hui Guan

Low-light image enhancement (LLIE) aims to restore natural visibility, color fidelity, and structural detail under severe illumination degradation. State-of-the-art (SOTA) LLIE techniques often rely on large models and multi-stage training,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Alexandru Brateanu , Tingting Mu , Codruta Ancuti , Cosmin Ancuti

Previous low-light image enhancement (LLIE) approaches, while employing frequency decomposition techniques to address the intertwined challenges of low frequency (e.g., illumination recovery) and high frequency (e.g., noise reduction),…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Kun Zhou , Xinyu Lin , Wenbo Li , Xiaogang Xu , Yuanhao Cai , Zhonghang Liu , Xiaoguang Han , Jiangbo Lu

Recent advances in image inpainting have shown impressive results for generating plausible visual details on rather simple backgrounds. However, for complex scenes, it is still challenging to restore reasonable contents as the contextual…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Wendong Zhang , Junwei Zhu , Ying Tai , Yunbo Wang , Wenqing Chu , Bingbing Ni , Chengjie Wang , Xiaokang Yang

Text images are unique in their dual nature, encompassing both visual and linguistic information. The visual component encompasses structural and appearance-based features, while the linguistic dimension incorporates contextual and semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yifei Zhang , Chang Liu , Jin Wei , Xiaomeng Yang , Yu Zhou , Can Ma , Xiangyang Ji

Low-light video enhancement (LLVE) is an important yet challenging task with many applications such as photographing and autonomous driving. Unlike single image low-light enhancement, most LLVE methods utilize temporal information from…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Lin Liu , Junfeng An , Jianzhuang Liu , Shanxin Yuan , Xiangyu Chen , Wengang Zhou , Houqiang Li , Yanfeng Wang , Qi Tian

Low-Light Image Enhancement (LLIE) aims to restore vivid content and details from corrupted low-light images. However, existing standard RGB (sRGB) color space-based LLIE methods often produce color bias and brightness artifacts due to the…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Qingsen Yan , Kangbiao Shi , Yixu Feng , Tao Hu , Peng Wu , Guansong Pang , Yanning Zhang

In this paper, we propose a self-supervised visual representation learning approach which involves both generative and discriminative proxies, where we focus on the former part by requiring the target network to recover the original image…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Yunjie Tian , Lingxi Xie , Xiaopeng Zhang , Jiemin Fang , Haohang Xu , Wei Huang , Jianbin Jiao , Qi Tian , Qixiang Ye

This paper presents an novel illumination-invariant feature representation approach used to eliminate the varying illumination affection in undersampled face recognition. Firstly, a new illumination level classification technique based on…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Yang Zhang , Changhui Hu , Xiaobo Lu

With the goal of tuning up the brightness, low-light image enhancement enjoys numerous applications, such as surveillance, remote sensing and computational photography. Images captured under low-light conditions often suffer from poor…

Image and Video Processing · Electrical Eng. & Systems 2021-01-21 Zhuqing Jiang , Chang Liu , Ya'nan Wang , Kai Li , Aidong Men , Haiying Wang , Haiyong Luo

Existing low-light image enhancement techniques are mostly not only difficult to deal with both visual quality and computational efficiency but also commonly invalid in unknown complex scenarios. In this paper, we develop a new…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Long Ma , Tengyu Ma , Risheng Liu , Xin Fan , Zhongxuan Luo

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

As vision based perception methods are usually built on the normal light assumption, there will be a serious safety issue when deploying them into low light environments. Recently, deep learning based methods have been proposed to enhance…

Computer Vision and Pattern Recognition · Computer Science 2020-10-21 Junjie Hu , Xiyue Guo , Junfeng Chen , Guanqi Liang , Fuqin Deng , Tin lun Lam

Evaluating the performance of low-light image enhancement (LLE) is highly subjective, thus making integrating human preferences into image enhancement a necessity. Existing methods fail to consider this and present a series of potentially…

Computer Vision and Pattern Recognition · Computer Science 2023-05-03 Ling Li , Dong Liang , Yuanhang Gao , Sheng-Jun Huang , Songcan Chen

Hand-held light field (LF) cameras often exhibit low spatial resolution due to the inherent trade-off between spatial and angular dimensions. Existing supervised learning-based LF spatial super-resolution (SR) methods, which rely on…

Image and Video Processing · Electrical Eng. & Systems 2025-12-09 Jianxin Lei , Dongze Wu , Chengcai Xu , Hongcheng Gu , Guangquan Zhou , Junhui Hou , Ping Zhou

Most existing Low-Light Image Enhancement (LLIE) methods are primarily designed to improve brightness in dark regions, which suffer from severe degradation in nighttime images. However, these methods have limited exploration in another…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Wanyu Wu , Wei Wang , Zheng Wang , Kui Jiang , Xin Xu

Limited illumination often causes severe physical noise and detail degradation in images. Existing Low-Light Image Enhancement (LLIE) methods frequently treat the enhancement process as a blind black-box mapping, overlooking the physical…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Tongshun Zhang , Pingping Liu , Yuqing Lei , Zixuan Zhong , Qiuzhan Zhou , Zhiyuan Zha

Underwater image enhancement has become an attractive topic as a significant technology in marine engineering and aquatic robotics. However, the limited number of datasets and imperfect hand-crafted ground truth weaken its robustness to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Di Wang , Long Ma , Risheng Liu , Xin Fan

In Few-Shot Learning (FSL), traditional metric-based approaches often rely on global metrics to compute similarity. However, in natural scenes, the spatial arrangement of key instances is often inconsistent across images. This spatial…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Hao Tang , Junhao Lu , Guoheng Huang , Ming Li , Xuhang Chen , Guo Zhong , Zhengguang Tan , Zinuo Li
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