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Unsupervised domain adaptation aims to generalize the supervised model trained on a source domain to an unlabeled target domain. Marginal distribution alignment of feature spaces is widely used to reduce the domain discrepancy between the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Pengfei Ge , Chuan-Xian Ren , Dao-Qing Dai , Hong Yan

Anomaly detection in images plays a significant role for many applications across all industries, such as disease diagnosis in healthcare or quality assurance in manufacturing. Manual inspection of images, when extended over a monotonously…

Computer Vision and Pattern Recognition · Computer Science 2021-07-21 Vincent Wilmet , Sauraj Verma , Tabea Redl , Håkon Sandaker , Zhenning Li

Person Re-Identification (ReID) across non-overlapping cameras is a challenging task and, for this reason, most works in the prior art rely on supervised feature learning from a labeled dataset to match the same person in different views.…

Computer Vision and Pattern Recognition · Computer Science 2022-02-08 Gabriel Bertocco , Fernanda Andaló , Anderson Rocha

Person re-identification (re-ID) solves the task of matching images across cameras and is among the research topics in vision community. Since query images in real-world scenarios might suffer from resolution loss, how to solve the…

Computer Vision and Pattern Recognition · Computer Science 2019-07-26 Yun-Chun Chen , Yu-Jhe Li , Xiaofei Du , Yu-Chiang Frank Wang

Supervised-learning based person re-identification (re-id) require a large amount of manual labeled data, which is not applicable in practical re-id deployment. In this work, we propose a Support Pair Active Learning (SPAL) framework to…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Dapeng Jin , Minxian Li

In this work, we address the problem of unsupervised domain adaptation for person re-ID where annotations are available for the source domain but not for target. Previous methods typically follow a two-stage optimization pipeline, where the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Takashi Isobe , Dong Li , Lu Tian , Weihua Chen , Yi Shan , Shengjin Wang

In this study, a new Anomaly Detection (AD) approach for industrial and medical images is proposed. This method leverages the theoretical strengths of unsupervised learning and the data availability of both normal and abnormal classes.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-24 Arnaud Bougaham , Valentin Delchevalerie , Mohammed El Adoui , Benoît Frénay

In a typical real-world application of re-id, a watch-list (gallery set) of a handful of target people (e.g. suspects) to track around a large volume of non-target people are demanded across camera views, and this is called the open-world…

Computer Vision and Pattern Recognition · Computer Science 2018-10-10 Xiang Li , Ancong Wu , Wei-Shi Zheng

Most person re-identification methods, being supervised techniques, suffer from the burden of massive annotation requirement. Unsupervised methods overcome this need for labeled data, but perform poorly compared to the supervised…

Computer Vision and Pattern Recognition · Computer Science 2023-04-06 Xueping Wang , Sujoy Paul , Dripta S. Raychaudhuri , Min Liu , Yaonan Wang , Amit K. Roy-Chowdhury

Unsupervised person re-identification (ReID) aims at learning discriminative identity features without annotations. Recently, self-supervised contrastive learning has gained increasing attention for its effectiveness in unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Hao Chen , Benoit Lagadec , Francois Bremond

Person re-identification (Re-ID) benefits greatly from the accurate annotations of existing datasets (e.g., CUHK03 [1] and Market-1501 [2]), which are quite expensive because each image in these datasets has to be assigned with a proper…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Guangrun Wang , Guangcong Wang , Xujie Zhang , Jianhuang Lai , Zhengtao Yu , Liang Lin

Person Re-identification (ReID) is to identify the same person across different cameras. It is a challenging task due to the large variations in person pose, occlusion, background clutter, etc How to extract powerful features is a…

Computer Vision and Pattern Recognition · Computer Science 2017-10-19 Dangwei Li , Xiaotang Chen , Zhang Zhang , Kaiqi Huang

Person re-identification (re-ID) is a very active area of research in computer vision, due to the role it plays in video surveillance. Currently, most methods only address the task of matching between colour images. However, in poorly-lit…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Nima Mohammadi Meshky , Sara Iodice , Krystian Mikolajczyk

Person re-identification (re-ID), is a challenging task due to the high variance within identity samples and imaging conditions. Although recent advances in deep learning have achieved remarkable accuracy in settled scenes, i.e., source…

Computer Vision and Pattern Recognition · Computer Science 2019-12-04 Fengxiang Yang , Ke Li , Zhun Zhong , Zhiming Luo , Xing Sun , Hao Cheng , Xiaowei Guo , Feiyue Huang , Rongrong Ji , Shaozi Li

Person re-identification in large-scale multi-camera networks is a challenging task because of the spatio-temporal uncertainty and high complexity due to large numbers of cameras and people. To handle these difficulties, additional…

Computer Vision and Pattern Recognition · Computer Science 2017-10-03 Yeong-Jun Cho , Jae-Han Park , Su-A Kim , Kyuewang Lee , Kuk-Jin Yoon

RGB-Infrared (IR) person re-identification is an important and challenging task due to large cross-modality variations between RGB and IR images. Most conventional approaches aim to bridge the cross-modality gap with feature alignment by…

Computer Vision and Pattern Recognition · Computer Science 2019-10-30 Guan'an Wang , Tianzhu Zhang , Jian Cheng , Si Liu , Yang Yang , Zengguang Hou

Person re-identification (re-ID) requires one to match images of the same person across camera views. As a more challenging task, semi-supervised re-ID tackles the problem that only a number of identities in training data are fully labeled,…

Computer Vision and Pattern Recognition · Computer Science 2020-10-06 Chih-Ting Liu , Yu-Jhe Li , Shao-Yi Chien , Yu-Chiang Frank Wang

Vehicle re-identification (Re-ID) has become a popular research topic owing to its practicability in intelligent transportation systems. Vehicle Re-ID suffers the numerous challenges caused by drastic variation in illumination, occlusions,…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Rixing Zhu , Jianwu Fang , Hongke Xu , Hongkai Yu , Jianru Xue

Person Re-identification (Person ReID) is an important topic in intelligent surveillance and computer vision. It aims to accurately measure visual similarities between person images for determining whether two images correspond to the same…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Xinglu Wang

Unsupervised learning can discover various unseen abnormalities, relying on large-scale unannotated medical images of healthy subjects. Towards this, unsupervised methods reconstruct a 2D/3D single medical image to detect outliers either in…

Computer Vision and Pattern Recognition · Computer Science 2020-10-13 Changhee Han , Leonardo Rundo , Kohei Murao , Tomoyuki Noguchi , Yuki Shimahara , Zoltan Adam Milacski , Saori Koshino , Evis Sala , Hideki Nakayama , Shinichi Satoh