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Precision livestock farming requires objective assessment of social behavior to support herd welfare monitoring, yet most existing approaches infer interactions using static proximity thresholds that cannot distinguish affiliative from…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Sibi Parivendan , Kashfia Sailunaz , Suresh Neethirajan

The use of 3D cameras for gait analysis has been highly questioned due to the low accuracy they have demonstrated in the past. The objective of the study presented in this paper is to improve the accuracy of the estimations made by…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Diego Guffanti , Alberto Brunete , Miguel Hernando , David Álvarez , Javier Rueda , Enrique Navarro

Accurate detection of locomotion transitions, such as walk to sit, walk to stair ascent, and descent, is crucial to effectively control robotic assistive devices, such as lower-limb exoskeletons, as each locomotion mode requires specific…

Visual odometry estimates the motion of a moving camera based on visual input. Existing methods, mostly focusing on two-view point tracking, often ignore the rich temporal context in the image sequence, thereby overlooking the global motion…

Computer Vision and Pattern Recognition · Computer Science 2025-11-07 Weirong Chen , Le Chen , Rui Wang , Marc Pollefeys

Automatic monitoring of calf behaviour is a promising way of assessing animal welfare from their first week on farms. This study aims to (i) develop machine learning models from accelerometer data to classify the main behaviours of…

Signal Processing · Electrical Eng. & Systems 2024-06-26 Oshana Dissanayake , Sarah E. Mcpherson , Joseph Allyndrée , Emer Kennedy , Pádraig Cunningham , Lucile Riaboff

Classifying the behavior of humans or animals from videos is important in biomedical fields for understanding brain function and response to stimuli. Action recognition, classifying activities performed by one or more subjects in a trimmed…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Michael Perez , Corey Toler-Franklin

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

This paper revisits camera pose estimation through the lens of self-supervised pretraining, focusing on inverse-dynamics pretraining as a scalable alternative to the current trend of fully supervised training with 3D annotations.…

Computer Vision and Pattern Recognition · Computer Science 2026-05-01 Zhengqing Wang , Saurabh Nair , Prajwal Chidananda , Pujith Kachana , Samuel Li , Matthew Brown , Yasutaka Furukawa

Recognizing and identifying human locomotion is a critical step to ensuring fluent control of wearable robots, such as transtibial prostheses. In particular, classifying the intended locomotion mode and estimating the gait phase are key. In…

Robotics · Computer Science 2024-11-14 Ryan Posh , Shenggao Li , Patrick Wensing

Video-based ambient monitoring of gait for older adults with dementia has the potential to detect negative changes in health and allow clinicians and caregivers to intervene early to prevent falls or hospitalizations. Computer vision-based…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Caroline Malin-Mayor , Vida Adeli , Andrea Sabo , Sergey Noritsyn , Carolina Gorodetsky , Alfonso Fasano , Andrea Iaboni , Babak Taati

Hyperkinetic movement disorders (HMDs) such as dystonia, tremor, chorea, myoclonus, and tics are disabling motor manifestations across childhood and adulthood. Their fluctuating, intermittent, and frequently co-occurring expressions hinder…

Current vision-language models (VLMs) are well-adapted for general visual understanding tasks. However, they perform inadequately when handling complex visual tasks related to human poses and actions due to the lack of specialized…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Dewen Zhang , Tahir Hussain , Wangpeng An , Hayaru Shouno

Walking-assistive devices require adaptive control methods to ensure smooth transitions between various modes of locomotion. For this purpose, detecting human locomotion modes (e.g., level walking or stair ascent) in advance is crucial for…

Robotics · Computer Science 2023-11-14 Peiwen Fu , Wenjuan Zhong , Yuyang Zhang , Wenxuan Xiong , Yuzhou Lin , Yanlong Tai , Lin Meng , Mingming Zhang

arly identification of motor impairment in infancy relies on expert visual assessment of spontaneous movement, motivating the development of automated, objective alternatives. One promising approach is using computer vision, which benefits…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Divya Joshi , J. D. Peiffer , Colleen Peyton , R. James Cotton

Accurate proprioceptive odometry is fundamental for legged robot navigation in GPS-denied and visually degraded environments where conventional visual odometry systems fail. Current approaches face critical limitations: analytical filtering…

Robotics · Computer Science 2025-11-25 Changsheng Luo , Yushi Wang , Wenhan Cai , Mingguo Zhao

Wearable robotics for lower-limb assistance have become a pivotal area of research, aiming to enhance mobility for individuals with physical impairments or augment the performance of able-bodied users. Accurate and adaptive control systems…

Robust behaviour recognition in real-world farm environments remains challenging due to several data-related limitations, including the scarcity of well-annotated livestock video datasets and the substantial domain gap between large-scale…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Huimin Liu , Jing Gao , Daria Baran , AxelX Montout , Neill W Campbell , Andrew W Dowsey

In this paper we propose a technique for obtaining coarse pose estimation of humans in an image that does not require any manual supervision. While a general unsupervised technique would fail to estimate human pose, we suggest that…

Computer Vision and Pattern Recognition · Computer Science 2017-04-14 Prabuddha Chakraborty , Vinay P. Namboodiri

The kinematics of human movements and locomotion are closely linked to the activation and contractions of muscles. To investigate this, we present a multimodal dataset with benchmarks collected using a novel pair of Intelligent Knee Sleeves…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Wenwen Zhang , Arvin Tashakori , Zenan Jiang , Amir Servati , Harishkumar Narayana , Saeid Soltanian , Rou Yi Yeap , Meng Han Ma , Lauren Toy , Peyman Servati

Animal pose estimation and tracking (APT) is a fundamental task for detecting and tracking animal keypoints from a sequence of video frames. Previous animal-related datasets focus either on animal tracking or single-frame animal pose…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Yuxiang Yang , Junjie Yang , Yufei Xu , Jing Zhang , Long Lan , Dacheng Tao