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Webcam eye tracking for the collection of gaze data in the context of user studies is convenient - it can be used in remote tests where participants do not need special hardware. The approach has strong limitations, especially regarding the…

Human-Computer Interaction · Computer Science 2022-08-01 Sezen Lim , Tina Walber , Christoph Schaefer , Lena Riehl

Musculoskeletal modeling and simulations enable the accurate description and analysis of the movement of biological systems with applications such as rehabilitation assessment, prosthesis, and exoskeleton design. However, the widespread…

Robotics · Computer Science 2025-07-29 Frederico Belmonte Klein , Zhaoyuan Wan , Huawei Wang , Ruoli Wang

Estimating human poses from videos is critical in human-computer interaction. Joints cooperate rather than move independently during human movement. There are both spatial and temporal correlations between joints. Despite the positive…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Yonghao Dang , Jianqin Yin , Shaojie Zhang , Jiping Liu , Yanzhu Hu

Most realtime human pose estimation approaches are based on detecting joint positions. Using the detected joint positions, the yaw and pitch of the limbs can be computed. However, the roll along the limb, which is critical for application…

Computer Vision and Pattern Recognition · Computer Science 2021-12-17 Martin Fisch , Ronald Clark

Conventional computed tomography (CT) lacks the ability to capture dynamic, weight-bearing joint motion. Functional evaluation, particularly after surgical intervention, requires four-dimensional (4D) imaging, but current methods are…

Computer Vision and Pattern Recognition · Computer Science 2025-08-25 Hao Tang , Rongxi Yi , Lei Li , Kaiyi Cao , Jiapeng Zhao , Yihan Xiao , Minghai Shi , Peng Yuan , Yan Xi , Hui Tang , Wei Li , Zhan Wu , Yixin Zhou

Stroke patients often experience upper limb impairments that restrict their mobility and daily activities. Physical therapy (PT) is the most effective method to improve impairments, but low patient adherence and participation in PT…

We propose an automatic method for pose and motion estimation against a ground surface for a ground-moving robot-mounted monocular camera. The framework adopts a semi-dense approach that benefits from both a feature-based method and an…

Robotics · Computer Science 2023-03-10 Masahiro Hirano , Taku Senoo , Norimasa Kishi , Masatoshi Ishikawa

This study proposes a method for simulating signals received by frequency-modulated continuous-wave radar during respiratory monitoring, using human body geometry and displacement data acquired via a depth camera. Unlike previous studies…

Signal Processing · Electrical Eng. & Systems 2025-07-21 Kimitaka Sumi , Takuya Sakamoto

This paper presents a control interface to translate the residual body motions of individuals living with severe disabilities, into control commands for body-machine interaction. A custom, wireless, wearable multi-sensor network is used to…

Advances in multiview markerless motion capture (MMMC) promise high-quality movement analysis for clinical practice and research. While prior validation studies show MMMC performs well on average, they do not provide what is needed in…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 R. James Cotton , Fabian Sinz

Automated assessment of human motion plays a vital role in rehabilitation, enabling objective evaluation of patient performance and progress. Unlike general human activity recognition, rehabilitation motion assessment focuses on analyzing…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Ali Ismail-Fawaz , Maxime Devanne , Stefano Berretti , Jonathan Weber , Germain Forestier

Inertial measurement units (IMUs) increasingly function as a basic component of wearable sensor network (WSN)systems. IMU-based joint angle estimation (JAE) is a relatively typical usage of IMUs, with extensive applications. However, the…

Signal Processing · Electrical Eng. & Systems 2021-06-10 Chunzhi Yi , Feng Jiang , Baichun Wei , Chifu Yang , Zhen Ding , Jubo Jin , Jie Liu

Contactless hand pose estimation requires sensors that provide precise spatial information and low computational complexity for real-time processing. Unlike vision-based systems, radar offers lighting independence and direct motion…

Signal Processing · Electrical Eng. & Systems 2024-06-21 Johanna Bräunig , Vanessa Wirth , Marc Stamminger , Ingrid Ullmann , Martin Vossiek

Robotic ultrasound (US) imaging has been seen as a promising solution to overcome the limitations of free-hand US examinations, i.e., inter-operator variability. However, the fact that robotic US systems cannot react to subject movements…

Robotics · Computer Science 2022-09-07 Zhongliang Jiang , Nehil Danis , Yuan Bi , Mingchuan Zhou , Markus Kroenke , Thomas Wendler , Nassir Navab

Involuntary motion during weight-bearing cone-beam computed tomography (CT) scans of the knee causes artifacts in the reconstructed volumes making them unusable for clinical diagnosis. Currently, image-based or marker-based methods are…

Computer Vision and Pattern Recognition · Computer Science 2020-10-22 Jennifer Maier , Marlies Nitschke , Jang-Hwan Choi , Garry Gold , Rebecca Fahrig , Bjoern M. Eskofier , Andreas Maier

Robust and fast motion estimation and mapping is a key prerequisite for autonomous operation of mobile robots. The goal of performing this task solely on a stereo pair of video cameras is highly demanding and bears conflicting objectives:…

Robotics · Computer Science 2018-10-19 Nicola Krombach , David Droeschel , Sebastian Houben , Sven Behnke

The use of a wide range of computer vision solutions, and more recently high-end Inertial Measurement Units (IMU) have become increasingly popular for assessing human physical activity in clinical and research settings. Nevertheless, to…

Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease that results in progressive articular destruction and severe disability. Joint space narrowing (JSN) progression has been regarded as an important indicator for RA…

Image and Video Processing · Electrical Eng. & Systems 2024-04-01 Haolin Wang , Yafei Ou , Wanxuan Fang , Prasoon Ambalathankandy , Naoto Goto , Gen Ota , Masayuki Ikebe , Tamotsu Kamishima

We develop uniform confidence bands for the mean function of stationary time series as a post-hoc analysis of multiple change point detection in functional time series. In particular, the methodology in this work provides bands for those…

Methodology · Statistics 2025-02-13 Patrick Bastian , Rupsa Basu , Holger Dette

Accurate lower-limb joint kinematic estimation is critical for applications such as patient monitoring, rehabilitation, and exoskeleton control. While previous studies have employed wearable sensor-based deep learning (DL) models for…

Robotics · Computer Science 2024-11-26 Changseob Song , Bogdan Ivanyuk-Skulskyi , Adrian Krieger , Kaitao Luo , Inseung Kang