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Automated livestock monitoring is crucial for precision farming, but robust computer vision models are hindered by a lack of datasets reflecting real-world group challenges. We introduce the 8-Calves dataset, a challenging benchmark for…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Xuyang Fang , Sion Hannuna , Neill Campbell , Edwin Simpson

Animal re-identification (ReID) faces critical challenges due to viewpoint variations, particularly in Aerial-Ground (AG-ReID) settings where models must match individuals across drastic elevation changes. However, existing datasets lack…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 William Grolleau , Achraf Chaouch , Astrid Sabourin , Guillaume Lapouge , Catherine Achard

Cattle identification is critical for efficient livestock farming management, currently reliant on radio-frequency identification (RFID) ear tags. However, RFID-based systems are prone to failure due to loss, damage, tampering, and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Rabin Dulal , Lihong Zheng , Ashad Kabir

Existing person re-identification (re-id) methods assume the provision of accurately cropped person bounding boxes with minimum background noise, mostly by manually cropping. This is significantly breached in practice when person bounding…

Computer Vision and Pattern Recognition · Computer Science 2018-07-10 Xu Lan , Hanxiao Wang , Shaogang Gong , Xiatian Zhu

People re-identification task has seen enormous improvements in the latest years, mainly due to the development of better image features extraction from deep Convolutional Neural Networks (CNN) and the availability of large datasets.…

Computer Vision and Pattern Recognition · Computer Science 2019-02-14 Luca Bergamini , Angelo Porrello , Andrea Capobianco Dondona , Ercole Del Negro , Mauro Mattioli , Nicola D'Alterio , Simone Calderara

Precision livestock farming (PLF) increasingly relies on advanced object localization techniques to monitor livestock health and optimize resource management. This study investigates the generalization capabilities of YOLOv8 and YOLOv9…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Mautushi Das , Gonzalo Ferreira , C. P. James Chen

Object re-identification (ReID) in large camera networks faces numerous challenges. First, the similar appearances of objects degrade ReID performance, a challenge that needs to be addressed by existing appearance-based ReID methods.…

Computer Vision and Pattern Recognition · Computer Science 2024-08-23 Hye-Geun Kim , Yong-Hyuk Moon , Yeong-Jun Cho

Crowd counting based on density maps is generally regarded as a regression task.Deep learning is used to learn the mapping between image content and crowd density distribution. Although great success has been achieved, some pedestrians far…

Computer Vision and Pattern Recognition · Computer Science 2022-04-18 Jiwei Chen , Kewei Wang , Wen Su , Zengfu Wang

Unsupervised person re-identification (Re-ID) aims to retrieve person images across cameras without any identity labels. Most clustering-based methods roughly divide image features into clusters and neglect the feature distribution noise…

Computer Vision and Pattern Recognition · Computer Science 2023-04-26 Pengna Li , Kangyi Wu , Sanping Zhou. Qianxin Huang , Jinjun Wang

Given a target image as query, person re-identification systems retrieve a ranked list of candidate matches on a per-camera basis. In deployed systems, a human operator scans these lists and labels sighted targets by touch or mouse-based…

Computer Vision and Pattern Recognition · Computer Science 2019-12-06 K L Navaneet , Ravi Kiran Sarvadevabhatla , Shashank Shekhar , R. Venkatesh Babu , Anirban Chakraborty

Most existing Re-IDentification (Re-ID) methods are highly dependent on precise bounding boxes that enable images to be aligned with each other. However, due to the challenging practical scenarios, current detection models often produce…

Computer Vision and Pattern Recognition · Computer Science 2019-05-07 Feng Zheng , Cheng Deng , Xing Sun , Xinyang Jiang , Xiaowei Guo , Zongqiao Yu , Feiyue Huang , Rongrong Ji

Video-based person re-identification (Re-ID) aims at matching the video tracklets with cropped video frames for identifying the pedestrians under different cameras. However, there exists severe spatial and temporal misalignment for those…

Computer Vision and Pattern Recognition · Computer Science 2021-09-23 Chih-Ting Liu , Jun-Cheng Chen , Chu-Song Chen , Shao-Yi Chien

Automated person re-identification in a multi-camera surveillance setup is very important for effective tracking and monitoring crowd movement. In the recent years, few deep learning based re-identification approaches have been developed…

Computer Vision and Pattern Recognition · Computer Science 2020-05-08 Nirbhay Kumar Tagore , Ayushman Singh , Sumanth Manche , Pratik Chattopadhyay

Fast person re-identification (ReID) aims to search person images quickly and accurately. The main idea of recent fast ReID methods is the hashing algorithm, which learns compact binary codes and performs fast Hamming distance and counting…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Guan'an Wang , Shaogang Gong , Jian Cheng , Zengguang Hou

In the context of Human-Robot Interaction (HRI), face Re-Identification (face Re-ID) aims to verify if certain detected faces have already been observed by robots. The ability of distinguishing between different users is crucial in social…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Yujiang Wang , Jie Shen , Stavros Petridis , Maja Pantic

Person re-identification (Re-ID) aims to match person images across non-overlapping camera views. The majority of Re-ID methods focus on small-scale surveillance systems in which each pedestrian is captured in different camera views of…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Wenhang Ge , Chunyan Pan , Ancong Wu , Hongwei Zheng , Wei-Shi Zheng

Person re-identification (PRID) from side-mounted rectilinear-lens cameras is a well-studied problem. On the other hand, PRID from overhead fisheye cameras is new and largely unstudied, primarily due to the lack of suitable image datasets.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-21 Mertcan Cokbas , John Bolognino , Janusz Konrad , Prakash Ishwar

Recently, Person Re-Identification (Re-ID) has received a lot of attention. Large datasets containing labeled images of various individuals have been released, allowing researchers to develop and test many successful approaches. However,…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Jose Huaman , Felix O. Sumari , Luigy Machaca , Esteban Clua , Joris Guerin

Computer vision-based re-identification (Re-ID) systems are increasingly being deployed for estimating population size in large image collections. However, the estimated size can be significantly inaccurate when the task is challenging or…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Gustavo Perez , Daniel Sheldon , Grant Van Horn , Subhransu Maji

Vehicle re-identification (ReID) in a large-scale camera network is important in public safety, traffic control, and security. However, due to the appearance ambiguities of vehicle, the previous appearance-based ReID methods often fail to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Hye-Geun Kim , YouKyoung Na , Hae-Won Joe , Yong-Hyuk Moon , Yeong-Jun Cho