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Low-light image enhancement (LLIE) is a pervasive yet challenging problem, since: 1) low-light measurements may vary due to different imaging conditions in practice; 2) images can be enlightened subjectively according to diverse preferences…

Computer Vision and Pattern Recognition · Computer Science 2021-07-14 Rongkai Zhang , Lanqing Guo , Siyu Huang , Bihan Wen

Images captured from low-light scenes often suffer from severe degradations, including low visibility, color cast and intensive noises, etc. These factors not only affect image qualities, but also degrade the performance of downstream…

Computer Vision and Pattern Recognition · Computer Science 2021-12-10 Risheng Liu , Long Ma , Tengyu Ma , Xin Fan , Zhongxuan Luo

Image retrieval under varying illumination conditions, such as day and night images, is addressed by image preprocessing, both hand-crafted and learned. Prior to extracting image descriptors by a convolutional neural network, images are…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Tomas Jenicek , Ondřej Chum

High-quality photography in extreme low-light conditions is challenging but impactful for digital cameras. With advanced computing hardware, traditional camera image signal processor (ISP) algorithms are gradually being replaced by…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Amber Yijia Zheng , Yu Zhang , Jun Hu , Raymond A. Yeh , Chen Chen

We investigate the efficacy of data augmentations to close the domain gap in spaceborne computer vision, crucial for autonomous operations like on-orbit servicing. As the use of computer vision in space increases, challenges such as hostile…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Maximilian Ulmer , Leonard Klüpfel , Maximilian Durner , Rudolph Triebel

Non-line-of-sight (NLOS) imaging of objects not visible to either the camera or illumination source is a challenging task with vital applications including surveillance and robotics. Recent NLOS reconstruction advances have been achieved…

Image and Video Processing · Electrical Eng. & Systems 2019-07-30 Sreenithy Chandran , Suren Jayasuriya

This paper presents a novel and interpretable end-to-end learning framework, called the deep compensation unfolding network (DCUNet), for restoring light field (LF) images captured under low-light conditions. DCUNet is designed with a…

Computer Vision and Pattern Recognition · Computer Science 2024-06-27 Xianqiang Lyu , Junhui Hou

Underexposure regions are vital to construct a complete perception of the surroundings for safe autonomous driving. The availability of thermal cameras has provided an essential alternate to explore regions where other optical sensors lack…

Computer Vision and Pattern Recognition · Computer Science 2021-05-04 Farzeen Munir , Shoaib Azam , Muhammd Aasim Rafique , Ahmad Muqeem Sheri , Moongu Jeon , Witold Pedrycz

Routine visual inspections of concrete structures are imperative for upholding the safety and integrity of critical infrastructure. Such visual inspections sometimes happen under low-light conditions, e.g., checking for bridge health. Crack…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Zhen Yao , Jiawei Xu , Shuhang Hou , Mooi Choo Chuah

Image dehazing deals with the removal of undesired loss of visibility in outdoor images due to the presence of fog. Retinex is a color vision model mimicking the ability of the Human Visual System to robustly discount varying illuminations…

Computer Vision and Pattern Recognition · Computer Science 2018-04-09 Adrian Galdran , Aitor Alvarez-Gila , Alessandro Bria , Javier Vazquez-Corral , Marcelo Bertalmio

Few-shot object detection is a challenging but realistic scenario, where only a few annotated training images are available for training detectors. A popular approach to handle this problem is transfer learning, i.e., fine-tuning a detector…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Ze Yang , Yali Wang , Xianyu Chen , Jianzhuang Liu , Yu Qiao

In this paper, we tackle the domain adaptive object detection problem, where the main challenge lies in significant domain gaps between source and target domains. Previous work seeks to plainly align image-level and instance-level shifts to…

Computer Vision and Pattern Recognition · Computer Science 2020-03-23 Chang-Dong Xu , Xing-Ran Zhao , Xin Jin , Xiu-Shen Wei

A low-light image enhancement is a highly demanded image processing technique, especially for consumer digital cameras and cameras on mobile phones. In this paper, a gradient-based low-light image enhancement algorithm is proposed. The key…

Computer Vision and Pattern Recognition · Computer Science 2018-09-26 Masayuki Tanaka , Takashi Shibata , Masatoshi Okutomi

We present a novel dehazing and low-light enhancement method based on an illumination map that is accurately estimated by a convolutional neural network (CNN). In this paper, the illumination map is used as a component for three different…

Computer Vision and Pattern Recognition · Computer Science 2019-07-29 Guisik Kim , Junseok Kwon

In this work, we observe that the generators, which are pre-trained on massive natural images, inherently hold the promising potential for superior low-light image enhancement against varying scenarios.Specifically, we embed a pre-trained…

Computer Vision and Pattern Recognition · Computer Science 2024-02-16 Yuxuan Gu , Yi Jin , Ben Wang , Zhixiang Wei , Xiaoxiao Ma , Pengyang Ling , Haoxuan Wang , Huaian Chen , Enhong Chen

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

In computer vision, it is well-known that a lack of data diversity will impair model performance. In this study, we address the challenges of enhancing the dataset diversity problem in order to benefit various downstream tasks such as…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Yuhang Li , Xin Dong , Chen Chen , Weiming Zhuang , Lingjuan Lyu

At the heart of the success of deep learning is the quality of the data. Through data augmentation, one can train models with better generalization capabilities and thus achieve greater results in their field of interest. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2021-10-28 George Chogovadze , Rémi Pautrat , Marc Pollefeys

Most visual recognition methods implicitly assume the data distribution remains unchanged from training to testing. However, in practice domain shift often exists, where real-world factors such as lighting and sensor type change between…

Machine Learning · Computer Science 2015-07-30 Yongxin Yang , Timothy Hospedales

Quantization is one of the most popular techniques for reducing computation time and shrinking model size. However, ensuring the accuracy of quantized models typically involves calibration using training data, which may be inaccessible due…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Burak Sevsay , Erdem Akagündüz
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