cv
Basics
Name | J.D. Peiffer |
Label | PhD Candidate |
jd.peiffer {at} gmail.com | |
Phone | (312) 238-1475 |
Url | https://peifferjd.github.io |
Summary | J.D. is a PhD Candidate working at the intersection of computer vision and biomechanical modelling. |
Education
Awards
- May 2022
Graduate Research Fellowship
National Science Foundation
- June 2024
T32 Training Grant
National Institutes of Health
Publications
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2024.11.22 Differentiable Biomechanics for Markerless Motion Capture in Upper Limb Stroke Rehabilitation: A Comparison with Optical Motion Capture
arXiv
Validates our computer vision approach to gold standard biomechanics in the upper limb.
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2024.09 Biomechanical Arm and Hand Tracking with Multiview Markerless Motion Capture
2024 10th IEEE RAS/EMBS International Conference for Biomedical Robotics and Biomechatronics (BioRob)
Applies earlier joint optimization of biomechanical models to the ARMS Lab's leading hand model.
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2024.09 Fusing Uncalibrated IMUs and Handheld Smartphone Video to Reconstruct Knee Kinematics
2024 10th IEEE RAS/EMBS International Conference for Biomedical Robotics and Biomechatronics (BioRob)
Presents a deep learning approach to fit a biomechanical model to video and IMU data collected during walking.
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2024.04.01 Hyperpolarized 129Xe MRI, 99mTc scintigraphy, and SPECT in lung ventilation imaging: a quantitative comparison
Academic Radiology
Compares a recently FDA approved method for lung imaging to the clinical standard in a large patient cohort.
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2023.9.24 Optimizing Trajectories and Inverse Kinematics for Biomechanical Analysis of Markerless Motion Capture Data
2023 International Conference on Rehabilitation Robotics (ICORR)
Develops a novel approach to jointly optimize body scale and joint paramaters for markerless motion capture.
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2023.09.01 Self-Supervised Learning of Gait-Based Biomarkers
Predictive Intelligence in Medicine
Creates a transformer that given timeseries of gait data learns a self-supervised embedding space useful for downstream tasks.
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2023.08.01 Enhanced selectivity of transcutaneous spinal cord stimulation by multielectrode configuration
Journal of Neural Engineering
Explores electrode placement and configuration to improve the selectivity of transcutaneous spinal cord stimulation.
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2023.03.19 Markerless Motion Capture and Biomechanical Analysis Pipeline
arXiv
Hardware and software pipeline for markerless motion capture and biomechanical analysis.
Skills
Machine Learning | |
Jax | |
PyTorch | |
Computer Vision | |
Self Supervised Learning | |
Deep Reinforcement Learning |
Biomechanics | |
Mujoco-MJX | |
Myosuite | |
Neurophysiology |
Wearables | |
IMU Fusion |
Software Development | |
Docker | |
Kubernetes | |
Git | |
Python | |
SQL |
Projects
- 2025.01 - Present
Deep reinforcement learning for global trajectory tracking
Incorperating phyiscal constrains such as forces and torques enable us to create physically grounded reinforcement learning policys to more accurately model movement in global space and measure joint torques.
- reinforcement learning
- computer vision
- biomechanics
- 2022.09 - Present
Single camera human pose estimation
Accurately recoving human pose from a single camera could democratize access to biomechanical analysis and enable big data studies of human movement. My algorithms incorperate physical constraints to improve accuracy and interpretability.
- Computer Vision
- Deep Learning
- Biomechanics
- 2022.09 - Present
Video-IMU fusion for human pose estimation
While video is a powerful and accessible sensor, it will always be limitied by occlusions. This work combines video and IMU data to improve accuracy and robustness of human pose estimation.
- Computer Vision
- Deep Learning
- Sensor Fusion
Volunteer
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2023.04 - Present Speaker
National Biomechanics Day
Developed interactive sessions for high school students to learn about biomechanics, prosthetics and computer vision.
- Awarded 'Climate Hero' award by Greenpeace for my efforts organizing the march.
- Men of the year 2014 by Time magazine