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In this paper, we tackle the problem of enhancing real-world low-light images with significant noise in an unsupervised fashion. Conventional unsupervised learning-based approaches usually tackle the low-light image enhancement problem…

Image and Video Processing · Electrical Eng. & Systems 2022-03-29 Wei Xiong , Ding Liu , Xiaohui Shen , Chen Fang , Jiebo Luo

Unsupervised visual anomaly detection from multi-view images presents a significant challenge: distinguishing genuine defects from benign appearance variations caused by viewpoint changes. Existing methods, often designed for single-view…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Xintao Chen , Xiaohao Xu , Bozhong Zheng , Yun Liu , Yingna Wu

Underwater visual enhancement (UVE) and underwater 3D reconstruction pose significant challenges in computer vision and AI-based tasks due to complex imaging conditions in aquatic environments. Despite the development of numerous…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Guoxi Huang , Haoran Wang , Brett Seymour , Evan Kovacs , John Ellerbrock , Dave Blackham , Nantheera Anantrasirichai

Vision-language models (VLMs) are vulnerable to adversarial image perturbations. Existing works based on adversarial training against task-specific adversarial examples are computationally expensive and often fail to generalize to unseen…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Jingning Xu , Haochen Luo , Chen Liu

Neural rendering methods can achieve near-photorealistic image synthesis of scenes from posed input images. However, when the images are imperfect, e.g., captured in very low-light conditions, state-of-the-art methods fail to reconstruct…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Vinayak Gupta , Rongali Simhachala Venkata Girish , Mukund Varma T , Ayush Tewari , Kaushik Mitra

Vehicle Re-Identification is to find images of the same vehicle from various views in the cross-camera scenario. The main challenges of this task are the large intra-instance distance caused by different views and the subtle inter-instance…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Dechao Meng , Liang Li , Xuejing Liu , Yadong Li , Shijie Yang , Zhengjun Zha , Xingyu Gao , Shuhui Wang , Qingming Huang

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

With recent deep learning based approaches showing promising results in removing noise from images, the best denoising performance has been reported in a supervised learning setup that requires a large set of paired noisy images and ground…

Image and Video Processing · Electrical Eng. & Systems 2022-09-20 Rihuan Ke

Contrastive self-supervised learning has emerged as a promising approach to unsupervised visual representation learning. In general, these methods learn global (image-level) representations that are invariant to different views (i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-09 Pedro O. Pinheiro , Amjad Almahairi , Ryan Y. Benmalek , Florian Golemo , Aaron Courville

Images acquired in low-light environments present significant obstacles for computer vision systems and human perception, especially for applications requiring accurate object recognition and scene analysis. Such images typically manifest…

Image and Video Processing · Electrical Eng. & Systems 2025-10-28 Bibhabasu Debnath , Sahana Ray , Sanjay Ghosh

Visual Semantic Embedding (VSE) aims to extract the semantics of images and their descriptions, and embed them into the same latent space for cross-modal information retrieval. Most existing VSE networks are trained by adopting a hard…

Computer Vision and Pattern Recognition · Computer Science 2023-02-15 Yan Gong , Georgina Cosma

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 relighting has emerged as a problem of significant research interest inspired by augmented reality applications. Physics-based traditional methods, as well as black box deep learning models, have been developed. The existing deep…

Computer Vision and Pattern Recognition · Computer Science 2021-05-06 Amirsaeed Yazdani , Tiantong Guo , Vishal Monga

The data bottleneck has emerged as a fundamental challenge in learning based image restoration methods. Researchers have attempted to generate synthesized training data using paired or unpaired samples to address this challenge. This study…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Dihan Zheng , Yihang Zou , Xiaowen Zhang , Chenglong Bao

Although unsupervised generative modeling of an image dataset using a Variational AutoEncoder (VAE) has been used to detect anomalous images, or anomalous regions in images, recent works have shown that this method often identifies images…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 David Dehaene , Pierre Eline

Deep convolutional neural networks have achieved exceptional results on multiple detection and recognition tasks. However, the performance of such detectors are often evaluated in public benchmarks under constrained and non-realistic…

Computer Vision and Pattern Recognition · Computer Science 2022-03-23 Yuhang Lu , Touradj Ebrahimi

End-to-end Vision-language Models (VLMs) often answer visual questions by exploiting spurious correlations instead of causal visual evidence, and can become more shortcut-prone when fine-tuned. We introduce VISTA (Visual-Information…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Zhaonan Li , Shijie Lu , Fei Wang , Jacob Dineen , Xiao Ye , Zhikun Xu , Siyi Liu , Young Min Cho , Bangzheng Li , Daniel Chang , Kenny Nguyen , Qizheng Yang , Muhao Chen , Ben Zhou

The history of computing started with analog computers consisting of physical devices performing specialized functions such as predicting the trajectory of cannon balls. In modern times, this idea has been extended, for example, to…

Image and Video Processing · Electrical Eng. & Systems 2022-08-29 Callen MacPhee , Bahram Jalali

Visual Anomaly Detection (VAD) is a critical task for many applications including industrial inspection and healthcare. While VAD has been extensively studied, two key challenges remain largely unaddressed in conjunction: edge deployment,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-09 Manuel Barusco , Francesco Borsatti , David Petrovic , Davide Dalle Pezze , Gian Antonio Susto

Low-visibility scenarios, such as low-light conditions, pose significant challenges to human pose estimation due to the scarcity of annotated low-light datasets and the loss of visual information under poor illumination. Recent domain…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Haopeng Chen , Yihao Ai , Kabeen Kim , Robby T. Tan , Yixin Chen , Bo Wang