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This paper reviews the NTIRE 2025 RAW Image Restoration and Super-Resolution Challenge, highlighting the proposed solutions and results. New methods for RAW Restoration and Super-Resolution could be essential in modern Image Signal…

Existing deep learning-based shadow removal methods still produce images with shadow remnants. These shadow remnants typically exist in homogeneous regions with low-intensity values, making them untraceable in the existing image-to-image…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Yuhao Liu , Qing Guo , Lan Fu , Zhanghan Ke , Ke Xu , Wei Feng , Ivor W. Tsang , Rynson W. H. Lau

This paper presents an overview of NTIRE 2025 the First Challenge on Event-Based Image Deblurring, detailing the proposed methodologies and corresponding results. The primary goal of the challenge is to design an event-based method that…

Existing face relighting methods often struggle with two problems: maintaining the local facial details of the subject and accurately removing and synthesizing shadows in the relit image, especially hard shadows. We propose a novel deep…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Andrew Hou , Ze Zhang , Michel Sarkis , Ning Bi , Yiying Tong , Xiaoming Liu

Nighttime image dehazing is a challenging task due to the presence of multiple types of adverse degrading effects including glow, haze, blurry, noise, color distortion, and so on. However, most previous studies mainly focus on daytime image…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Yun Liu , Zhongsheng Yan , Sixiang Chen , Tian Ye , Wenqi Ren , Erkang Chen

In this paper, we summarize the 1st NTIRE challenge on stereo image super-resolution (restoration of rich details in a pair of low-resolution stereo images) with a focus on new solutions and results. This challenge has 1 track aiming at the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Longguang Wang , Yulan Guo , Yingqian Wang , Juncheng Li , Shuhang Gu , Radu Timofte

This paper reports on the NTIRE 2025 challenge on Text to Image (T2I) generation model quality assessment, which will be held in conjunction with the New Trends in Image Restoration and Enhancement Workshop (NTIRE) at CVPR 2025. The aim of…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Shuhao Han , Haotian Fan , Fangyuan Kong , Wenjie Liao , Chunle Guo , Chongyi Li , Radu Timofte , Liang Li , Tao Li , Junhui Cui , Yunqiu Wang , Yang Tai , Jingwei Sun , Jianhui Sun , Xinli Yue , Tianyi Wang , Huan Hou , Junda Lu , Xinyang Huang , Zitang Zhou , Zijian Zhang , Xuhui Zheng , Xuecheng Wu , Chong Peng , Xuezhi Cao , Trong-Hieu Nguyen-Mau , Minh-Hoang Le , Minh-Khoa Le-Phan , Duy-Nam Ly , Hai-Dang Nguyen , Minh-Triet Tran , Yukang Lin , Yan Hong , Chuanbiao Song , Siyuan Li , Jun Lan , Zhichao Zhang , Xinyue Li , Wei Sun , Zicheng Zhang , Yunhao Li , Xiaohong Liu , Guangtao Zhai , Zitong Xu , Huiyu Duan , Jiarui Wang , Guangji Ma , Liu Yang , Lu Liu , Qiang Hu , Xiongkuo Min , Zichuan Wang , Zhenchen Tang , Bo Peng , Jing Dong , Fengbin Guan , Zihao Yu , Yiting Lu , Wei Luo , Xin Li , Minhao Lin , Haofeng Chen , Xuanxuan He , Kele Xu , Qisheng Xu , Zijian Gao , Tianjiao Wan , Bo-Cheng Qiu , Chih-Chung Hsu , Chia-ming Lee , Yu-Fan Lin , Bo Yu , Zehao Wang , Da Mu , Mingxiu Chen , Junkang Fang , Huamei Sun , Wending Zhao , Zhiyu Wang , Wang Liu , Weikang Yu , Puhong Duan , Bin Sun , Xudong Kang , Shutao Li , Shuai He , Lingzhi Fu , Heng Cong , Rongyu Zhang , Jiarong He , Zhishan Qiao , Yongqing Huang , Zewen Chen , Zhe Pang , Juan Wang , Jian Guo , Zhizhuo Shao , Ziyu Feng , Bing Li , Weiming Hu , Hesong Li , Dehua Liu , Zeming Liu , Qingsong Xie , Ruichen Wang , Zhihao Li , Yuqi Liang , Jianqi Bi , Jun Luo , Junfeng Yang , Can Li , Jing Fu , Hongwei Xu , Mingrui Long , Lulin Tang

Shadows are often under-considered or even ignored in image editing applications, limiting the realism of the edited results. In this paper, we introduce MetaShadow, a three-in-one versatile framework that enables detection, removal, and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-04 Tianyu Wang , Jianming Zhang , Haitian Zheng , Zhihong Ding , Scott Cohen , Zhe Lin , Wei Xiong , Chi-Wing Fu , Luis Figueroa , Soo Ye Kim

Segment Anything (SAM), an advanced universal image segmentation model trained on an expansive visual dataset, has set a new benchmark in image segmentation and computer vision. However, it faced challenges when it came to distinguishing…

Computer Vision and Pattern Recognition · Computer Science 2025-08-27 Xiao Feng Zhang , Tian Yi Song , Jia Wei Yao

Shadows are a common factor degrading image quality. Single-image shadow removal (SR), particularly under challenging indirect illumination, is hampered by non-uniform content degradation and inherent ambiguity. Consequently, traditional…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Yu-Fan Lin , Chia-Ming Lee , Chih-Chung Hsu

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

Shadow removal is a computer-vision task that aims to restore the image content in shadow regions. While almost all recent shadow-removal methods require shadow-free images for training, in ECCV 2020 Le and Samaras introduces an innovative…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Zhihao Liu , Hui Yin , Xinyi Wu , Zhenyao Wu , Yang Mi , Song Wang

This paper reviews the first-ever image demoireing challenge that was part of the Advances in Image Manipulation (AIM) workshop, held in conjunction with ICCV 2019. This paper describes the challenge, and focuses on the proposed solutions…

Document shadow removal is essential for enhancing the clarity of digitized documents. Preserving high-frequency details (e.g., text edges and lines) is critical in this process because shadows often obscure or distort fine structures. This…

Computer Vision and Pattern Recognition · Computer Science 2025-12-10 Chaewon Kim , Seoyeon Lee , Jonghyuk Park

In this paper, we present an overview of the NTIRE 2026 challenge on the 3rd Restore Any Image Model in the Wild, specifically focusing on Track 1: Professional Image Quality Assessment. Conventional Image Quality Assessment (IQA) typically…

Shadows, formed by the occlusion of light, play an essential role in visual perception and directly influence scene understanding, image quality, and visual realism. This paper presents a unified survey and benchmark of deep-learning-based…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Xiaowei Hu , Zhenghao Xing , Tianyu Wang , Chi-Wing Fu , Pheng-Ann Heng

This paper presents our solution to the NTIRE 2026 Image Denoising Challenge (Gaussian color image denoising at fixed noise level $\sigma = 50$). Rather than proposing a new restoration backbone, we revisit the performance boundary of the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Gengjia Chang , Xining Ge , Weijun Yuan , Zhan Li , Qiurong Song , Luen Zhu , Shuhong Liu

Low-light image enhancement (LLIE) is a fundamental yet challenging task due to the presence of noise, loss of detail, and poor contrast in images captured under insufficient lighting conditions. Recent methods often rely solely on…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Alexandru Brateanu , Raul Balmez , Ciprian Orhei , Codruta Ancuti , Cosmin Ancuti

2D face analysis techniques, such as face landmarking, face recognition and face verification, are reasonably dependent on illumination conditions which are usually uncontrolled and unpredictable in the real world. An illumination robust…

Computer Vision and Pattern Recognition · Computer Science 2017-10-17 Wuming Zhang , Xi Zhao , Jean-Marie Morvan , Liming Chen