Summary

It's a new era for Theia! See how our industry-leading AI-powered motion capture software is getting faster, smarter, and more accurate with each update — built for biomechanics researchers and performance professionals who need reliable, repeatable data.

Theia, Evolved: Leading The Future of AI-Powered Motion Capture

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Theia Has Evolved – Here’s What’s New and What It Means for You

At Theia, we’ve always believed in pushing the boundaries of what’s possible in biomechanics. From cutting-edge AI-powered motion capture to unparalleled precision in movement analysis, our mission has remained clear: to provide biomechanics researchers, sports scientists, and research professionals with the most accurate, reliable, and efficient tools for human motion analysis.

Today, we're excited to unveil a refreshed brand identity that reflects our growth, innovation, and leadership in biomechanics technology.
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Why We're Evolving

Biomechanics professionals are driving groundbreaking advancements in sports science, research, and human performance.

‍Your work is shaping the future of biomechanics. Our job is to ensure you have the most advanced tools to do it.

That's why Theia continues to reinvest in innovation. Our technology is:

Backed by science, with 30+ peer-reviewed validations
Trusted by researchers, deployed in biomechanical labs worldwide‍
Designed for seamless integration with leading biomechanics workflows

Like you, we’re never satisfied with the status quo. That’s why we’re continuously pushing the boundaries of what’s possible in markerless motion capture, ensuring you have the most precise, validated, and scalable solutions to advance your research and applications.

“Biomechanics is more than just research – it’s the key to unlocking human potential. At Theia, our mission has always been to bring you the most powerful and precise tools, rigorously validated by independent research, to make your work easier, faster, and more impactful. Our evolution is a commitment to innovation, precision, and most importantly, the biomechanics professionals working together to redefine what the human body can achieve.

As biomechanics evolves, Theia evolves with it – delivering next-generation products and technology that empower you to push the boundaries of what’s possible in motion capture.”
– Marcus Brown, Founder & CEO

What's New?

A Smarter, More Intuitive Website

The new Theia website makes it easier than ever to explore our technology, research applications, and validation studies. Technical documentation, case studies, and product insights are all available in a more streamlined experience.

Explore the new website: www.theiamarkerless.com

A Bigger, Clearer Vision

Theia Markerless is now Theia—a name that reflects our precision focus on delivering the most advanced AI-powered motion capture tools to biomechanics professionals.

Later in 2025, we’ll unveil groundbreaking advancements in AI-driven motion capture, pushing the boundaries of precision, speed, and usability.

What This Means for You

For Existing Customers

There are no changes to how you use Theia3D. All key resources remain accessible: FAQ Section, Product Documentation, Troubleshooting & Support, Downloads Portal, and Theia Resource Hub.

For New Visitors

Welcome! Dive into Theia’s latest research collaborations, customer success stories, and motion capture technology to see how we’re transforming biomechanics.

Explore Theia3D in action

Theia’s Commitment to Innovation

Theia has redefined biomechanical analysis by combining deep learning motion tracking with fundamental biomechanics principles. Our software delivers centimeter-level motion tracking precision, fully automated end-to-end analysis, validated results in 30+ peer-reviewed studies, seamless integration with multiple OEM hardware systems, and scalable, research-grade insights for labs and sports teams.

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‍Want to see a demo? Request one here.

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.