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Unsupervised person re-identification (ReID) is a challenging task without data annotation to guide discriminative learning. Existing methods attempt to solve this problem by clustering extracted embeddings to generate pseudo labels.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-30 Xue Li , Tengfei Liang , Yi Jin , Tao Wang , Yidong Li

Deep learning models are widely employed in safety-critical applications yet remain susceptible to adversarial attacks -- imperceptible perturbations that can significantly degrade model performance. Conventional defense mechanisms…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Eylon Mizrahi , Raz Lapid , Moshe Sipper

Unsupervised person re-identification (ReID) aims to match a query image of a pedestrian to the images in gallery set without supervision labels. The most popular approaches to tackle unsupervised person ReID are usually performing a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-15 He Sun , Mingkun Li , Chun-Guang Li

Person re-identification (re-ID) is of great importance to video surveillance systems by estimating the similarity between a pair of cross-camera person shorts. Current methods for estimating such similarity require a large number of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Lin Wu , Deyin Liu , Wenying Zhang , Dapeng Chen , Zongyuan Ge , Farid Boussaid , Mohammed Bennamoun , Jialie Shen

Unsupervised person re-identification (Re-ID) aims to learn a feature network with cross-camera retrieval capability in unlabelled datasets. Although the pseudo-label based methods have achieved great progress in Re-ID, their performance in…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Mingxiao Zheng , Yanpeng Qu , Changjing Shang , Longzhi Yang , Qiang Shen

Contrastive Language-Image Pre-Training (CLIP) model excels in traditional person re-identification (ReID) tasks due to its inherent advantage in generating textual descriptions for pedestrian images. However, applying CLIP directly to…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Xuan Tan , Xun Gong , Yang Xiang

Person re-identification (re-ID) aims at recognizing the same person from images taken across different cameras. To address this challenging task, existing re-ID models typically rely on a large amount of labeled training data, which is not…

Computer Vision and Pattern Recognition · Computer Science 2019-09-24 Yu-Jhe Li , Ci-Siang Lin , Yan-Bo Lin , Yu-Chiang Frank Wang

Most existing person re-identification (Re-ID) approaches follow a supervised learning framework, in which a large number of labelled matching pairs are required for training. Such a setting severely limits their scalability in real-world…

Computer Vision and Pattern Recognition · Computer Science 2018-07-12 Shan Lin , Haoliang Li , Chang-Tsun Li , Alex Chichung Kot

Person re-identification (Re-ID) is one of the primary components of an automated visual surveillance system. It aims to automatically identify/search persons in a multi-camera network having non-overlapping field-of-views. Owing to its…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Asmat Zahra , Nazia Perwaiz , Muhammad Shahzad , Muhammad Moazam Fraz

Person Re-identification (re-id) faces two major challenges: the lack of cross-view paired training data and learning discriminative identity-sensitive and view-invariant features in the presence of large pose variations. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2018-04-26 Xuelin Qian , Yanwei Fu , Tao Xiang , Wenxuan Wang , Jie Qiu , Yang Wu , Yu-Gang Jiang , Xiangyang Xue

Being a cross-camera retrieval task, person re-identification suffers from image style variations caused by different cameras. The art implicitly addresses this problem by learning a camera-invariant descriptor subspace. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2018-04-11 Zhun Zhong , Liang Zheng , Zhedong Zheng , Shaozi Li , Yi Yang

Recently, several methods based on generative adversarial network (GAN) have been proposed for the task of aligning cross-domain images or learning a joint distribution of cross-domain images. One of the methods is to use conditional GAN…

Computer Vision and Pattern Recognition · Computer Science 2017-07-06 Xudong Mao , Qing Li , Haoran Xie

The main contribution of this paper is a simple semi-supervised pipeline that only uses the original training set without collecting extra data. It is challenging in 1) how to obtain more training data only from the training set and 2) how…

Computer Vision and Pattern Recognition · Computer Science 2017-08-23 Zhedong Zheng , Liang Zheng , Yi Yang

This paper introduces a novel approach for unsupervised object co-localization using Generative Adversarial Networks (GANs). GAN is a powerful tool that can implicitly learn unknown data distributions in an unsupervised manner. From the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-10 Junsuk Choe , Joo Hyun Park , Hyunjung Shim

Multi-view person association is a fundamental step towards multi-view analysis of human activities. Although the person re-identification features have been proven effective, they become unreliable in challenging scenes where persons share…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Keqi Chen , Vinkle Srivastav , Didier Mutter , Nicolas Padoy

We empirically investigate the camera bias of person re-identification (ReID) models. Previously, camera-aware methods have been proposed to address this issue, but they are largely confined to training domains of the models. We measure the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-17 Myungseo Song , Jin-Woo Park , Jong-Seok Lee

Weakly-supervised learning has become a popular technology in recent years. In this paper, we propose a novel medical image classification algorithm, called Weakly-Supervised Generative Adversarial Networks (WSGAN), which only uses a small…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Jiawei Mao , Xuesong Yin , Yuanqi Chang , Qi Huang

In this paper, we aim to tackle the one-shot person re-identification problem where only one image is labelled for each person, while other images are unlabelled. This task is challenging due to the lack of sufficient labelled training…

Computer Vision and Pattern Recognition · Computer Science 2022-01-21 Hui Li , Jimin Xiao , Mingjie Sun , Eng Gee Lim , Yao Zhao

Person re-identification aims to associate images of the same person over multiple non-overlapping camera views at different times. Depending on the human operator, manual re-identification in large camera networks is highly time consuming…

Computer Vision and Pattern Recognition · Computer Science 2019-11-19 Shubham Kumar Singh , Krishna P Miyapuram , Shanmuganathan Raman

Person re-identification (reID) aims to match person images to retrieve the ones with the same identity. This is a challenging task, as the images to be matched are generally semantically misaligned due to the diversity of human poses and…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Xin Jin , Cuiling Lan , Wenjun Zeng , Guoqiang Wei , Zhibo Chen