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The captured images under low light conditions often suffer insufficient brightness and notorious noise. Hence, low-light image enhancement is a key challenging task in computer vision. A variety of methods have been proposed for this task,…

Image and Video Processing · Electrical Eng. & Systems 2020-05-22 Cheng Zhang , Qingsen Yan , Yu zhu , Xianjun Li , Jinqiu Sun , Yanning Zhang

Low-light image enhancement is challenging in that it needs to consider not only brightness recovery but also complex issues like color distortion and noise, which usually hide in the dark. Simply adjusting the brightness of a low-light…

Image and Video Processing · Electrical Eng. & Systems 2020-03-17 Feifan Lv , Yu Li , Feng Lu

Image metrics predict the perceived per-pixel difference between a reference image and its degraded (e. g., re-rendered) version. In several important applications, the reference image is not available and image metrics cannot be applied.…

Existing methods for enhancing dark images captured in a very low-light environment assume that the intensity level of the optimal output image is known and already included in the training set. However, this assumption often does not hold,…

Image and Video Processing · Electrical Eng. & Systems 2023-04-05 Evgeny Hershkovitch Neiterman , Michael Klyuchka , Gil Ben-Artzi

We present a novel method to fuse the power of deep networks with the computational efficiency of geometric and probabilistic localization algorithms. In contrast to other methods that completely replace a classical visual estimator with a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Valentin Peretroukhin , Jonathan Kelly

Detecting objects in low-light scenarios presents a persistent challenge, as detectors trained on well-lit data exhibit significant performance degradation on low-light data due to low visibility. Previous methods mitigate this issue by…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Zhipeng Du , Miaojing Shi , Jiankang Deng

Although gaze estimation methods have been developed with deep learning techniques, there has been no such approach as aim to attain accurate performance in low-resolution face images with a pixel width of 50 pixels or less. To solve a…

Computer Vision and Pattern Recognition · Computer Science 2022-09-22 Jun-Seok Yun , Youngju Na , Hee Hyeon Kim , Hyung-Il Kim , Seok Bong Yoo

As critical visual details become obscured, the low visibility and high ISO noise in extremely low-light images pose a significant challenge to human pose estimation. Current methods fail to provide high-quality representations due to…

Computer Vision and Pattern Recognition · Computer Science 2025-01-15 Feng Zhang , Ze Li , Xiatian Zhu , Lei Chen

Recent studies on learning-based image denoising have achieved promising performance on various noise reduction tasks. Most of these deep denoisers are trained either under the supervision of clean references, or unsupervised on synthetic…

Image and Video Processing · Electrical Eng. & Systems 2021-03-30 Rui Zhao , Daniel P. K. Lun , Kin-Man Lam

Images captured under low-light conditions manifest poor visibility, lack contrast and color vividness. Compared to conventional approaches, deep convolutional neural networks (CNNs) perform well in enhancing images. However, being solely…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Aditya Arora , Muhammad Haris , Syed Waqas Zamir , Munawar Hayat , Fahad Shahbaz Khan , Ling Shao , Ming-Hsuan Yang

Tomography is important for network design and routing optimization. Prior approaches require either precise time synchronization or complex cooperation. Furthermore, active tomography consumes explicit probeing resulting in limited…

Networking and Internet Architecture · Computer Science 2013-07-22 Peng Qin , Bin Dai , Kui Wu , Benxiong Huang , Guan Xu

Mask-based lensless cameras replace the lens of a conventional camera with a custom mask. These cameras can potentially be very thin and even flexible. Recently, it has been demonstrated that such mask-based cameras can recover light…

Image and Video Processing · Electrical Eng. & Systems 2020-06-22 Yucheng Zheng , M. Salman Asif

Self-supervised depth estimation, which solely requires monocular image sequence as input, has become increasingly popular and promising in recent years. Current research primarily focuses on enhancing the prediction accuracy of the models.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Xi Zhang , Yaru Xue , Shaocheng Jia , Xin Pei

Computational stereo has reached a high level of accuracy, but degrades in the presence of occlusions, repeated textures, and correspondence errors along edges. We present a novel approach based on neural networks for depth estimation that…

Computer Vision and Pattern Recognition · Computer Science 2020-04-01 Yinda Zhang , Neal Wadhwa , Sergio Orts-Escolano , Christian Häne , Sean Fanello , Rahul Garg

In this work, we consider the image super-resolution (SR) problem. The main challenge of image SR is to recover high-frequency details of a low-resolution (LR) image that are important for human perception. To address this essentially…

Computer Vision and Pattern Recognition · Computer Science 2017-11-22 Wenhan Yang , Jiashi Feng , Jianchao Yang , Fang Zhao , Jiaying Liu , Zongming Guo , Shuicheng Yan

Low-light images, i.e. the images captured in low-light conditions, suffer from very poor visibility caused by low contrast, color distortion and significant measurement noise. Low-light image enhancement is about improving the visibility…

Image and Video Processing · Electrical Eng. & Systems 2020-07-08 Jinxiu Liang , Yong Xu , Yuhui Quan , Jingwen Wang , Haibin Ling , Hui Ji

Low-light image enhancement (LIE) aims at precisely and efficiently recovering an image degraded in poor illumination environments. Recent advanced LIE techniques are using deep neural networks, which require lots of low-normal light image…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Yunlong Lin , Zhenqi Fu , Kairun Wen , Tian Ye , Sixiang Chen , Ge Meng , Yingying Wang , Yue Huang , Xiaotong Tu , Xinghao Ding

Low-light image enhancement (LLIE) is a crucial task in computer vision aimed at enhancing the visual fidelity of images captured under low-illumination conditions. Conventional methods frequently struggle with noise, overexposure, and…

Image and Video Processing · Electrical Eng. & Systems 2025-07-17 Namrah Siddiqua , Kim Suneung , Seong-Whan Lee

Images captured under low-light scenarios often suffer from low quality. Previous CNN-based deep learning methods often involve using Retinex theory. Nevertheless, most of them cannot perform well in more complicated datasets like LOL-v2…

Computer Vision and Pattern Recognition · Computer Science 2025-04-25 Jingcheng Li , Ye Qiao , Haocheng Xu , Sitao Huang

Image deep features extracted by pre-trained networks are known to contain rich and informative representations. In this paper, we present Deep Degradation Response (DDR), a method to quantify changes in image deep features under varying…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Juncheng Wu , Zhangkai Ni , Hanli Wang , Wenhan Yang , Yuyin Zhou , Shiqi Wang