Visual3D is an advanced analysis package for managing and reporting optical 3D data. Visual3D, together with Qualisys Motion Capture System, provide an advanced and affordable solution for biomechanical analysis.
Core features
Visual3D is designed and developed by C-Motion, Inc, one of Qualisys’ global, strategic partners for the development and marketing of clinical and research applications. Qualisys Motion Capture Systems are now offered together with the Visual3D software.
Input data
Visual3D’s standard input file is in the C3D format. Visual3D reads and writes C3D files created on any common computer platform (PC, VAX, SGI, MAC). Tab-delimited ASCII files and Matlab’s files can be imported, exported and converted into C3D files.
Model Builder
The core of Visual3D is the Model Builder, a flexible biomechanical modeling tool that can be used to define an unrestricted number of rigid segments and link them together.
The Visual3D biomechanical model defines each joint to have six degrees of freedom. The generalized six degrees of freedom modeling technique allows for the analysis of virtually any human, animal or mechanical movement (including assistive technologies).
Screenshot of man doing a karate kick in Visual 3D
Tracking
Visual3D uses an optimal method for tracking each segment of the model. The pose (position and orientation) of each segment is determined by 3 or more non-collinear points attached to the segment.
For even greater accuracy, a cluster of targets can be rigidly attached to a shell. This prevents the targets from moving relative to each other. This shell is then affixed to the segment.
The kinematics of the model is calculated by determining the transformation from the tracking targets recorded to a calibration pose.
Powerful and extendable
Scripting and Workflow
Soccer kick in Visual 3D with data from QTM.
Visual3D has a modest scripting language that permits the automated processing of data. Using scripts, custom data processing (that is not available through the graphical user interface) has been implemented for selected customers.
The most recent version of Visual3D is also capable of executing user-defined exe files and user-defined DLLs. This provides the user with the ability to generate custom analyses while also taking advantage of the data visualization and reporting capabilities of Visual3D.
Real-Time
Qualisys Track Manager tracks objects automatically in real-time and 2D, 3D and 6D camera information is displayed allowing instant confirmation of accurate data acquisition.
Captured data is easily streamed, in real-time, from QTM into Visual3D. In Visual3D you can then view and analyze data in real time, create real-time moving charts, and trigger events off of threshold exceptions or signals. A real-time pipeline* is provided which enables the creation of kinematics and inverse dynamics results, in real-time.
One benefit is that you can create a model, and see the data applied to a model, in real-time and thus verify a meaningful data capture on the spot, rather than finding errors in post processing and having to redo (i.e. reschedule) a trial.
* Requires V3D Professional.
