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The key issue of few-shot learning is learning to generalize. This paper proposes a large margin principle to improve the generalization capacity of metric based methods for few-shot learning. To realize it, we develop a unified framework…

Machine Learning · Computer Science 2018-09-24 Yong Wang , Xiao-Ming Wu , Qimai Li , Jiatao Gu , Wangmeng Xiang , Lei Zhang , Victor O. K. Li

Fine-grained classification of microscopic image data with limited samples is an open problem in computer vision and biomedical imaging. Deep learning based vision systems mostly deal with high number of low-resolution images, whereas…

Computer Vision and Pattern Recognition · Computer Science 2020-10-07 Mengran Fan , Tapabrata Chakrabort , Eric I-Chao Chang , Yan Xu , Jens Rittscher

Gun violence is a severe problem in the world, particularly in the United States. Deep learning methods have been studied to detect guns in surveillance video cameras or smart IP cameras and to send a real-time alert to security personals.…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Delong Qi , Weijun Tan , Zhifu Liu , Qi Yao , Jingfeng Liu

Extracting discriminative features plays a crucial role in the fine-grained visual classification task. Most of the existing methods focus on developing attention or augmentation mechanisms to achieve this goal. However, addressing the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Tuong Do , Huy Tran , Erman Tjiputra , Quang D. Tran , Anh Nguyen

We present a comprehensive study and evaluation of existing single image compression artifacts removal algorithms, using a new 4K resolution benchmark including diversified foreground objects and background scenes with rich structures,…

Image and Video Processing · Electrical Eng. & Systems 2020-08-26 Jiaying Liu , Dong Liu , Wenhan Yang , Sifeng Xia , Xiaoshuai Zhang , Yuanying Dai

Image classification is a fundamental computer vision task and an important baseline for deep metric learning. In decades efforts have been made on enhancing image classification accuracy by using deep learning models while less attention…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Yunfeng Zhao , Huiyu Zhou , Fei Wu , Xifeng Wu

The proposal of perceptual loss solves the problem that per-pixel difference loss function causes the reconstructed image to be overly-smooth, which acquires a significant progress in the field of single image super-resolution…

Image and Video Processing · Electrical Eng. & Systems 2022-01-19 Jie Song , Huawei Yi , Wenqian Xu , Xiaohui Li , Bo Li , Yuanyuan Liu

Deep Convolutional Neural Network (DCNN) and Transformer have achieved remarkable successes in image recognition. However, their performance in fine-grained image recognition is still difficult to meet the requirements of actual needs. This…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Chaorong Li , Malu Zhang , Wei Huang , Fengqing Qin , Anping Zeng , Yuanyuan Huang

Convolutional Neural Network (CNN) is a very powerful approach to extract discriminative local descriptors for effective image search. Recent work adopts fine-tuned strategies to further improve the discriminative power of the descriptors.…

Computer Vision and Pattern Recognition · Computer Science 2017-11-28 Tuan Hoang , Thanh-Toan Do , Dang-Khoa Le Tan , Ngai-Man Cheung

In recent years we have seen an upsurge in terror attacks around the world. Such attacks usually happen in public places with large crowds to cause the most damage possible and get the most attention. Even though surveillance cameras are…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Alexander Egiazarov , Vasileios Mavroeidis , Fabio Massimo Zennaro , Kamer Vishi

We consider the problem of obtaining image quality representations in a self-supervised manner. We use prediction of distortion type and degree as an auxiliary task to learn features from an unlabeled image dataset containing a mixture of…

Computer Vision and Pattern Recognition · Computer Science 2022-06-30 Pavan C. Madhusudana , Neil Birkbeck , Yilin Wang , Balu Adsumilli , Alan C. Bovik

Image retrieval targets to find images from a database that are visually similar to the query image. Two-stage methods following retrieve-and-rerank paradigm have achieved excellent performance, but their separate local and global modules…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Yunquan Zhu , Xinkai Gao , Bo Ke , Ruizhi Qiao , Xing Sun

Few-shot learning (FSL) has attracted increasing attention in recent years but remains challenging, due to the intrinsic difficulty in learning to generalize from a few examples. This paper proposes an adaptive margin principle to improve…

Computer Vision and Pattern Recognition · Computer Science 2020-05-29 Aoxue Li , Weiran Huang , Xu Lan , Jiashi Feng , Zhenguo Li , Liwei Wang

While fine-grained object recognition is an important problem in computer vision, current models are unlikely to accurately classify objects in the wild. These fully supervised models need additional annotated images to classify objects in…

Computer Vision and Pattern Recognition · Computer Science 2017-09-11 Timnit Gebru , Judy Hoffman , Li Fei-Fei

Image reflection removal is crucial for restoring image quality. Distorted images can negatively impact tasks like object detection and image segmentation. In this paper, we present a novel approach for image reflection removal using a…

Computer Vision and Pattern Recognition · Computer Science 2024-12-16 Abdelrahman Elnenaey , Marwan Torki

Far-field characterization of small objects is severely constrained by the diffraction limit. Existing tools achieving sub-diffraction resolution often utilize point-by-point image reconstruction via scanning or labelling. Here, we present…

Training an effective video action recognition model poses significant computational challenges, particularly under limited resource budgets. Current methods primarily aim to either reduce model size or utilize pre-trained models, limiting…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Harry Cheng , Yangyang Guo , Liqiang Nie , Zhiyong Cheng , Mohan Kankanhalli

Few-shot image classification is a challenging problem that aims to achieve the human level of recognition based only on a small number of training images. One main solution to few-shot image classification is deep metric learning. These…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Xiaoxu Li , Xiaochen Yang , Zhanyu Ma , Jing-Hao Xue

Computed medical imaging systems require a computational reconstruction procedure for image formation. In order to recover a useful estimate of the object to-be-imaged when the recorded measurements are incomplete, prior knowledge about the…

Image and Video Processing · Electrical Eng. & Systems 2022-02-21 Varun A. Kelkar , Mark A. Anastasio

The rapid evolution of generative adversarial networks (GANs) and diffusion models has made synthetic media increasingly realistic, raising societal concerns around misinformation, identity fraud, and digital trust. Existing deepfake…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Sales Aribe