For a full understanding your data, how to perform calculations, and knowing what they mean, it is fundamental to know what the Visual3D default joint angle conventions are. In this tutorial we give an overview of the conventions for the lower body.
This tutorial shows how to define a landmark in Visual3D by projecting an existing landmark or target onto a plane. This is useful, for example, in tracking the motion of a subject’s center of mass with respect to the floor.
This video shows how to define landmarks in Visual3D using your lab’s global coordinate system. A landmark is defined by its X, Y, and Z offsets from the lab’s origin point; this can be especially useful in creating a virtual lab.
This tutorial shows how to define a landmark in 3D space in Visual3D. When you use three points for reference, you can specify offsets along the X, Y, and Z axes, giving you full control over where in virtual space to place your landmark.
This tutorial explores the differences between static and dynamic trials and how they are used in Visual3D. A static trial is used to define the biomechanical model that is applied to dynamic recordings.
This tutorial shows how to track a point of interest located on a line between two other points. This is useful for tracking points that cannot be directly defined by markers, such as the knee joint center.
Not all points of interest for motion capture can be tracked by markers. This video explains how landmarks solve this problem and shows how to use Visual3D to define a landmark using a single point.
This tutorial discusses the concepts behind definition markers, which are recorded in static trials, and tracking markers, which are tracked during dynamic trials.
This tutorial shows how to track a segment in Visual3D using a separate set of markers from the ones used to define the segment. This can solve problems like skin movement artefact and camera occlusions.
This video shows how to use marker clusters to track segments during dynamic motion capture trials. This can solve problems like skin movement artefact and camera occlusions so that the segment is tracked accurately.
