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We present a deep neural network for removing undesirable shading features from an unconstrained portrait image, recovering the underlying texture. Our training scheme incorporates three regularization strategies: masked loss, to emphasize…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Joshua Weir , Junhong Zhao , Andrew Chalmers , Taehyun Rhee

Real-world dark images commonly exhibit not only low visibility and contrast but also complex noise and blur, posing significant restoration challenges. Existing methods often rely on paired data or fail to model dynamic illumination and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Wei Dong , Han Zhou , Junwei Lin , Jun Chen

This paper presents a novel network structure with illumination-aware gamma correction and complete image modelling to solve the low-light image enhancement problem. Low-light environments usually lead to less informative large-scale dark…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Yinglong Wang , Zhen Liu , Jianzhuang Liu , Songcen Xu , Shuaicheng Liu

In the current computer vision era classifying scenes through video surveillance systems is a crucial task. Artificial Intelligence (AI) Video Surveillance technologies have been advanced remarkably while artificial intelligence and deep…

Computer Vision and Pattern Recognition · Computer Science 2021-10-18 Md Foysal Haque , Hay-Youn Lim , Dae-Seong Kang

Recent single-image relighting methods, powered by advanced generative models, have achieved impressive photorealism on synthetic benchmarks. However, their effectiveness in the complex visual landscape of the real world remains largely…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Lezhong Wang , Mehmet Onurcan Kaya , Siavash Bigdeli , Jeppe Revall Frisvad

In real-world scenarios, image impairments often manifest as composite degradations, presenting a complex interplay of elements such as low light, haze, rain, and snow. Despite this reality, existing restoration methods typically target…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Yu Guo , Yuan Gao , Yuxu Lu , Huilin Zhu , Ryan Wen Liu , Shengfeng He

Shadows introduce challenges such as reduced brightness, texture deterioration, and color distortion in images, complicating a holistic solution. This study presents \textbf{ShadowHack}, a divide-and-conquer strategy that tackles these…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Jin Hu , Mingjia Li , Xiaojie Guo

Image restoration is a critical task in low-level computer vision, aiming to restore high-quality images from degraded inputs. Various models, such as convolutional neural networks (CNNs), generative adversarial networks (GANs),…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Yuan Shi , Bin Xia , Xiaoyu Jin , Xing Wang , Tianyu Zhao , Xin Xia , Xuefeng Xiao , Wenming Yang

The extremes of lighting (e.g. too much or too little light) usually cause many troubles for machine and human vision. Many recent works have mainly focused on under-exposure cases where images are often captured in low-light conditions…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Hue Nguyen , Diep Tran , Khoi Nguyen , Rang Nguyen

Reconstructing an object from photos and placing it virtually in a new environment goes beyond the standard novel view synthesis task as the appearance of the object has to not only adapt to the novel viewpoint but also to the new lighting…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Benjamin Ummenhofer , Sanskar Agrawal , Rene Sepulveda , Yixing Lao , Kai Zhang , Tianhang Cheng , Stephan Richter , Shenlong Wang , German Ros

Adverse weather conditions such as haze, rain, and snow often impair the quality of captured images, causing detection networks trained on normal images to generalize poorly in these scenarios. In this paper, we raise an intriguing question…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Yongzhen Wang , Xuefeng Yan , Kaiwen Zhang , Lina Gong , Haoran Xie , Fu Lee Wang , Mingqiang Wei

Recent work has shown that diffusion models can serve as powerful neural rendering engines that can be leveraged for inserting virtual objects into images. However, unlike typical physics-based renderers, these neural rendering engines are…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Frédéric Fortier-Chouinard , Zitian Zhang , Louis-Etienne Messier , Mathieu Garon , Anand Bhattad , Jean-François Lalonde

In real-world environments, outdoor imaging systems are often affected by disturbances such as rain degradation. Especially, in nighttime driving scenes, insufficient and uneven lighting shrouds the scenes in darkness, resulting degradation…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Cidan Shi , Lihuang Fang , Han Wu , Xiaoyu Xian , Yukai Shi , Liang Lin

This paper presents a detailed examination of low-light visual Simultaneous Localization and Mapping (SLAM) pipelines, focusing on the integration of state-of-the-art (SOTA) low-light image enhancement algorithms with standard and…

Generalizing models trained on normal visual conditions to target domains under adverse conditions is demanding in the practical systems. One prevalent solution is to bridge the domain gap between clear- and adverse-condition images to make…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Mingjia Li , Binhui Xie , Shuang Li , Chi Harold Liu , Xinjing Cheng

We present a fully convolutional network(FCN) based approach for color image restoration. FCNs have recently shown remarkable performance for high-level vision problem like semantic segmentation. In this paper, we investigate if FCN models…

Computer Vision and Pattern Recognition · Computer Science 2017-04-14 Subhajit Chaudhury , Hiya Roy

Adverse Weather Image Restoration (AWIR) is a highly challenging task due to the unpredictable and dynamic nature of weather-related degradations. Traditional task-specific methods often fail to generalize to unseen or complex degradation…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Wenxuan Fang , Jili Fan , Chao Wang , Xiantao Hu , Jiangwei Weng , Ying Tai , Jian Yang , Jun Li

Images obtained in real-world low-light conditions are not only low in brightness, but they also suffer from many other types of degradation, such as color distortion, unknown noise, detail loss and halo artifacts. In this paper, we propose…

Image and Video Processing · Electrical Eng. & Systems 2021-10-06 Xinxu Wei , Xianshi Zhang , Shisen Wang , Cheng Cheng , Yanlin Huang , Kaifu Yang , Yongjie Li

The aim of image restoration is to recover high-quality images from distorted ones. However, current methods usually focus on a single task (\emph{e.g.}, denoising, deblurring or super-resolution) which cannot address the needs of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Cheng Zhang , Yu Zhu , Qingsen Yan , Jinqiu Sun , Yanning Zhang

The light field (LF) reconstruction is mainly confronted with two challenges, large disparity and the non-Lambertian effect. Typical approaches either address the large disparity challenge using depth estimation followed by view synthesis…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Gaochang Wu , Yebin Liu , Lu Fang , Tianyou Chai