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Can freely moving humans or animals themselves serve as calibration targets for multi-camera systems while simultaneously estimating their correspondences across views? We humans can solve this problem by mentally rotating the observed 2D…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Sang-Eun Lee , Ko Nishino , Shohei Nobuhara

In this paper, we examine the use of data from multiple sensing modes, i.e., accelerometry and global navigation satellite system (GNSS), for classifying animal behavior. We extract three new features from the GNSS data, namely, distance…

Machine Learning · Computer Science 2022-10-27 Reza Arablouei , Ziwei Wang , Greg J. Bishop-Hurley , Jiajun Liu

In policy learning for robotic manipulation, sample efficiency is of paramount importance. Thus, learning and extracting more compact representations from camera observations is a promising avenue. However, current methods often assume full…

In this work, we investigate four different fusion methods for associating detections to tracklets in multi-object visual tracking. In addition to considering strong cues such as motion and appearance information, we also consider weak cues…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Nathanael L. Baisa

A pose estimation technique based on error-state extended Kalman that fuses angular rates, accelerations, and relative range measurements is presented in this paper. An unconstrained dynamic model with kinematic coupling for a…

Systems and Control · Electrical Eng. & Systems 2024-09-18 Deep Parikh , Manoranjan Majji

Human pose estimation is a key task in computer vision with various applications such as activity recognition and interactive systems. However, the lack of consistency in the annotated skeletons across different datasets poses challenges in…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 Muhammad Saif Ullah Khan , Dhavalkumar Limbachiya , Didier Stricker , Muhammad Zeshan Afzal

Sensor-based Human Activity Recognition facilitates unobtrusive monitoring of human movements. However, determining the most effective sensor placement for optimal classification performance remains challenging. This paper introduces a…

Machine Learning · Computer Science 2023-07-07 Orhan Konak , Alexander Wischmann , Robin van de Water , Bert Arnrich

Multi-object tracking (MOT) is one of the most challenging tasks in computer vision, where it is important to correctly detect objects and associate these detections across frames. Current approaches mainly focus on tracking objects in each…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Matvei Shelukhan , Timur Mamedov , Karina Kvanchiani

State estimation is a fundamental problem in control and signal processing, for which the Kalman Filter provides an optimal solution under linear dynamics, Gaussian noise, and known noise covariances. However, these assumptions often fail…

Machine Learning · Computer Science 2026-05-27 Vasileios Saketos , Ming Xiao

Analyzing rat behavior lies at the heart of many scientific studies. Past methods for automated rodent modeling have focused on 3D pose estimation from keypoints, e.g., face and appendages. The pose, however, does not capture the rich body…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Ayaka Higami , Karin Oshima , Tomoyo Isoguchi Shiramatsu , Hirokazu Takahashi , Shohei Nobuhara , Ko Nishino

Single-stage multi-person pose estimation aims to jointly perform human localization and keypoint prediction within a unified framework, offering advantages in inference efficiency and architectural simplicity. Consequently, multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Nanjun Li , Pinqi Cheng , Zean Liu , Minghe Tian , Xuanyin Wang

Three-dimensional tracking of multiple objects from multiple views has a wide range of applications, especially in the study of bio-cluster behavior which requires precise trajectories of research objects. However, there are significant…

Computer Vision and Pattern Recognition · Computer Science 2023-09-27 Nianhao Xie

This paper describes recent developments in object specific pose and shape prediction from single images. The main contribution is a new approach to camera pose prediction by self-supervised learning of keypoints corresponding to locations…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Zahra Gharaee , Felix Järemo Lawin , Per-Erik Forssén

We introduce SkelFormer, a novel markerless motion capture pipeline for multi-view human pose and shape estimation. Our method first uses off-the-shelf 2D keypoint estimators, pre-trained on large-scale in-the-wild data, to obtain 3D joint…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Vandad Davoodnia , Saeed Ghorbani , Alexandre Messier , Ali Etemad

We characterize the problem of pose estimation for rigid objects in terms of determining viewpoint to explain coarse pose and keypoint prediction to capture the finer details. We address both these tasks in two different settings - the…

Computer Vision and Pattern Recognition · Computer Science 2015-04-28 Shubham Tulsiani , Jitendra Malik

Markerless pose estimation allows reconstructing human movement from multiple synchronized and calibrated views, and has the potential to make movement analysis easy and quick, including gait analysis. This could enable much more frequent…

Computer Vision and Pattern Recognition · Computer Science 2023-03-09 R. James Cotton , Anthony Cimorelli , Kunal Shah , Shawana Anarwala , Scott Uhlrich , Tasos Karakostas

Multi-object tracking (MOT) predominantly follows the tracking-by-detection paradigm, where Kalman filters serve as the standard motion predictor due to computational efficiency but inherently fail on non-linear motion patterns. Conversely,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Seungjae Kim , SeungJoon Lee , MyeongAh Cho

Acquiring the accurate 3-D position of a target person around a robot provides fundamental and valuable information that is applicable to a wide range of robotic tasks, including home service, navigation and entertainment. This paper…

Robotics · Computer Science 2017-03-16 Mengmeng Wang , Daobilige Su , Lei Shi , Yong Liu , Jaime Valls Miro

Automatically estimating animal poses from videos is important for studying animal behaviors. Existing methods do not perform reliably since they are trained on datasets that are not comprehensive enough to capture all necessary animal…

Computer Vision and Pattern Recognition · Computer Science 2025-06-05 Zhuoyang Pan , Boxiao Pan , Guandao Yang , Adam W. Harley , Leonidas Guibas

This paper proposes and evaluates, for the first time, a top-down (dorsal view), depth-only deep learning system for accurately identifying individual cattle and provides associated code, datasets, and training weights for immediate…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Asheesh Sharma , Lucy Randewich , William Andrew , Sion Hannuna , Neill Campbell , Siobhan Mullan , Andrew W. Dowsey , Melvyn Smith , Mark Hansen , Tilo Burghardt