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The paradigm of self-supervision focuses on representation learning from raw data without the need of labor-consuming annotations, which is the main bottleneck of current data-driven methods. Self-supervision tasks are often used to…

Computer Vision and Pattern Recognition · Computer Science 2023-07-06 Shuai Chen , Subhradeep Kayal , Marleen de Bruijne

Video person re-identification attracts much attention in recent years. It aims to match image sequences of pedestrians from different camera views. Previous approaches usually improve this task from three aspects, including a) selecting…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Ruimao Zhang , Hongbin Sun , Jingyu Li , Yuying Ge , Liang Lin , Ping Luo , Xiaogang Wang

Person re-identification is an open and challenging problem in computer vision. Existing approaches have concentrated on either designing the best feature representation or learning optimal matching metrics in a static setting where the…

Computer Vision and Pattern Recognition · Computer Science 2017-06-13 Rameswar Panda , Amran Bhuiyan , Vittorio Murino , Amit K. Roy-Chowdhury

While metric learning is important for Person re-identification (RE-ID), a significant problem in visual surveillance for cross-view pedestrian matching, existing metric models for RE-ID are mostly based on supervised learning that requires…

Computer Vision and Pattern Recognition · Computer Science 2017-10-19 Hong-Xing Yu , Ancong Wu , Wei-Shi Zheng

Face hallucination is a generative task to super-resolve the facial image with low resolution while human perception of face heavily relies on identity information. However, previous face hallucination approaches largely ignore facial…

Computer Vision and Pattern Recognition · Computer Science 2018-11-07 Kaipeng Zhang , Zhanpeng Zhang , Chia-Wen Cheng , Winston H. Hsu , Yu Qiao , Wei Liu , Tong Zhang

Person re-identification (re-id) suffers from a serious occlusion problem when applied to crowded public places. In this paper, we propose to retrieve a full-body person image by using a person image with occlusions. This differs…

Computer Vision and Pattern Recognition · Computer Science 2018-04-23 Jiaxuan Zhuo , Zeyu Chen , Jianhuang Lai , Guangcong Wang

Face recognition from a single image per person is a challenging problem because the training sample is extremely small. We consider a variation of this problem. In our problem, we recognize only one person, and there are no labeled data…

Machine Learning · Computer Science 2026-05-01 Branislav Kveton , Michal Valko

Self-supervised instance discrimination is an effective contrastive pretext task to learn feature representations and address limited medical image annotations. The idea is to make features of transformed versions of the same images similar…

Computer Vision and Pattern Recognition · Computer Science 2022-11-17 Yejia Zhang , Xinrong Hu , Nishchal Sapkota , Yiyu Shi , Danny Z. Chen

We proposed a novel approach to coherent imaging of dynamic samples. The inter-frame similarity of the sample's local structures is found to be a powerful constraint in phasing a sequence of diffraction patterns. We devised a new image…

Optics · Physics 2024-07-11 Pengju Sheng , Fucai Zhang

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

In this paper, we address a highly challenging yet critical task: unsupervised long-term person re-identification with clothes change. Existing unsupervised person re-id methods are mainly designed for short-term scenarios and usually rely…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Mingkun Li , Peng Xu , Chun-Guang Li , Jun Guo

The ability to produce convincing textural details is essential for the fidelity of synthesized person images. However, existing methods typically follow a ``warping-based'' strategy that propagates appearance features through the same…

Computer Vision and Pattern Recognition · Computer Science 2020-10-12 Lingbo Yang , Pan Wang , Xinfeng Zhang , Shanshe Wang , Zhanning Gao , Peiran Ren , Xuansong Xie , Siwei Ma , Wen Gao

Various factors like occlusions, backgrounds, etc., would lead to misaligned detected bounding boxes , e.g., ones covering only portions of human body. This issue is common but overlooked by previous person search works. To alleviate this…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Yingji Zhong , Xiaoyu Wang , Shiliang Zhang

Person re-identification (ReID) is an important problem in computer vision, especially for video surveillance applications. The problem focuses on identifying people across different cameras or across different frames of the same camera.…

Computer Vision and Pattern Recognition · Computer Science 2018-12-27 Doney Alex , Zishan Sami , Sumandeep Banerjee , Subrat Panda

The superiority of deeply learned pedestrian representations has been reported in very recent literature of person re-identification (re-ID). In this paper, we consider the more pragmatic issue of learning a deep feature with no or only a…

Computer Vision and Pattern Recognition · Computer Science 2017-06-30 Hehe Fan , Liang Zheng , Yi Yang

While training on samples drawn from independent and identical distribution has been a de facto paradigm for optimizing image classification networks, humans learn new concepts in an easy-to-hard manner and on the selected examples…

Computer Vision and Pattern Recognition · Computer Science 2020-10-16 Bowen Cheng , Yunchao Wei , Jiahui Yu , Shiyu Chang , Jinjun Xiong , Wen-Mei Hwu , Thomas S. Huang , Humphrey Shi

Person re-identification (re-ID) aims to recognize a person-of-interest across different cameras with notable appearance variance. Existing research works focused on the capability and robustness of visual representation. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2019-08-15 Shiyang Yan , Jun Xu , Yuai Liu , Lin Xu

Neural net classifiers trained on data with annotated class labels can also capture apparent visual similarity among categories without being directed to do so. We study whether this observation can be extended beyond the conventional…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Zhirong Wu , Yuanjun Xiong , Stella Yu , Dahua Lin

Recently, video-based person re-identification (re-ID) has drawn increasing attention in compute vision community because of its practical application prospects. Due to the inaccurate person detections and pose changes, pedestrian…

Computer Vision and Pattern Recognition · Computer Science 2021-03-23 Guoqing Zhang , Yuhao Chen , Yang Dai , Yuhui Zheng , Yi Wu

Person re-identification (Re-ID) models usually show a limited performance when they are trained on one dataset and tested on another dataset due to the inter-dataset bias (e.g. completely different identities and backgrounds) and the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Jiajie Tian , Zhu Teng , Rui Li , Yan Li , Baopeng Zhang , Jianping Fan