What is Qualisys Markerless Motion Capture?

Qualisys Markerless Motion Capture enables full-body kinematic analysis without reflective markers, using Miqus Hybrid and Miqus Video cameras alongside Theia post-processing software. Participants move naturally without any marker preparation, eliminating setup time and enabling studies of unrestricted everyday movement.

Through the True Hybrid solution, markerless and marker-based data can be captured simultaneously in a single session, providing independent validation tracks and unprecedented workflow flexibility for biomechanics and clinical labs.

Key Features

• True Hybrid — Simultaneous Capture: Combine Qualisys motion capture cameras and Miqus Video cameras to capture marker-based and markerless data in the same session, with fully synchronized outputs for direct comparison or independent analysis.
• Miqus Hybrid Camera: A single camera that seamlessly switches between marker-based tracking and markerless video recording — a flexible, future-proof investment for evolving research needs.
• Theia Post-Processing: Intelligent joint detection and automated pose estimation by Theia processes markerless video after capture and exports results to Visual 3D for further biomechanical analysis.
• Object Tracking: Track sports implements such as bats, golf clubs, and rackets alongside body segments — enabling full sport-specific analysis without special instrumentation.
• Activity Modules: Pre-built workflows cover Gait, Functional Assessment, Cycling, Running, Baseball, and Golf, including full True Hybrid (markerless + marker-based) support.
• QTM Workflow: Calibration, capture, and mode-switching all happen within QTM — no additional camera system or software environment to manage.

FAQ

• How accurate is markerless compared to marker-based tracking? Marker-based tracking remains the gold standard for accuracy. Markerless capture offers reduced setup time and enables natural, unencumbered movement. The True Hybrid approach lets labs validate markerless accuracy against simultaneous marker-based data in the same session.
• What cameras do I need for markerless motion capture? Markerless capture uses Miqus Hybrid cameras or Miqus Video cameras in the True Hybrid setup. Existing Qualisys mocap cameras can be combined with Miqus Video cameras in the same session.
• What software processes the markerless data? Capture happens in QTM. Post-processing and joint tracking are handled by Theia software, with final biomechanical analysis in Visual 3D.
• Can the system track objects as well as people? Yes. The True Hybrid system supports object tracking for implements such as bats, golf clubs, and rackets alongside body segments in the same capture session.