Top Considerations for Markerless Motion Capture Systems

Summary

What should you consider when vetting new technologies for your research program? Here's our list of considerations for going markerless.

Background

With continued improvements in motion capture technology, more accessible markerless solutions are emerging for biomechanics researchers and sports performance staff. When considering going markerless, there are a variety of considerations to keep in mind. Here are the top considerations to think about when going markerless for your research.

Accuracy and Validation

When evaluating a markerless system, look for peer-reviewed validation studies that demonstrate accuracy for the specific movements and research populations relevant to your work. Theia3D has been independently validated across gait, running, jumping, cutting, and sport-specific movements in diverse research cohorts.

Workflow and Setup

Markerless systems should reduce preparation burden without sacrificing data quality. Consider setup time, camera requirements, calibration complexity, and integration with your existing analysis software. Theia3D works with standard synchronized camera systems and exports to industry-standard formats.

Research Population Suitability

Consider whether the system has been validated in populations similar to your research participants. Theia3D has been tested across diverse age groups, activity levels, and movement conditions, including pediatric, athletic, and aging research populations.

Data Privacy and Ownership

All Theia3D processing happens locally on your hardware. No video or kinematic data is transmitted to external servers, ensuring full data ownership and compliance with research ethics requirements.

Recent Posts

A Major Research Milestone for Theia3D

More than 50 independent, peer-reviewed research publications now cite, evaluate or review Theia3D across domains including gait, sports performance, postural control, upper-extremity movement and other biomechanics applications. These publications are available in world-leading journals including Journal of Biomechanics, Journal of Applied Biomechanics, Gait & Posture and Clinical Biomechanics. Together, they represent a growing body of evidence across different movements, populations and environments, reinforcing Theia3D’s position as the most extensively validated markerless motion capture system.

Beyond The Radar Gun: How Dean Jackson uses Theia3D For Incremental Velocity Analysis

This article is a first in a miniseries that breaks down what motion capture can show beyond radar, ball data, and standard video. In this first installment, Dean breaks down how he uses Incremental Velocity Analysis, or IVA, to study what changes biomechanically as pitchers move closer and closer to max output.

New Research on Theia3D: Comparing Markerless and Marker-Based Shoulder Kinematics Across Full Arm Range of Motion

A 2025 study published in the Journal of Biomechanics compared shoulder kinematics measured with Theia3D markerless motion capture against gold-standard marker-based motion capture across full arm ranges of motion. The results show strong agreement for many movements, particularly in the coronal plane, while also highlighting where caution is still required, especially at the extremes of ranges of motion and in transverse-plane rotations.