A series exploring the many options available in Visual3D and showing how to use the tools to get the most out of your data.
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Center of pressure is a key historically reported parameter in biomechanics. In this tutorial, we show you how to use the Compute Model Based Data function to calculate the center of pressure path and how to tweak the pipeline command in order to get exactly what you want from your data.
Although your force plata data is most likely already synchronized with your motion capture data, in Visual3D, you can recalculate your data to make it easier to interpret based on the coordinate system that is most convenient for you.
If you have already built a biomechanical model in Visual3D, you can use it to perform biomechanical calculations through Compute Model Based Data. In this tutorial, we show you how to calculate the joint forces, and highlight the difference between using a segment coordinate system or a Cardan sequence.
A properly built a biomechanical model in Visual3D is a very powerful tool, one of the advantages is the ability to perform calculations through Compute Model Based Data. In this tutorial, we show you how to calculate the joint moments, and highlight the difference between using a resolution coordinate system or a Cardan sequence.
Performing 3D calculations between segments is mathematically complex. When those segments are also moving, setting up those calculations is critical to understanding what your data means. One of the methods in Visual3D to obtain rotational data is to use Cardan Sequences. In this tutorial, we show you how to use Cardan Sequences in Compute Model Based Data and how the data changes based on your choices. We also show you the use of Euler Sequences, which in Visual3D are listed in the Cardan Sequence menu.
When dealing with vector-based calculations in Compute Model Based Data, segment coordinate systems are important to apply correctly. In this tutorial, we explain how to use different segment coordinate systems to obtain your data defined in exactly the way you want.
The features in Compute Model Based Dataj offer a lot of scientifically validated calculations. However, it is also important to understand how to apply them. When it comes to joint velocity, it is no different, so in this tutorial, we explain how to set up the command to get the data you want.
A common but misunderstood biomechanical calculation is joint power. As a feature in Compute Model Based Dataj we have scientifically validated methods to obtain it. However, it is important to understand that both of these model based items are to calculate scalar values. In this tutorial, we explore how to use Joint_Power and Joint_Power_Scalar and explain the difference between them.
One of the key features of Visual3D is the ability to track landmarks accurately. However, as you build your pipelines, you may be interested in knowing the relative position of a point on a segment. In this tutorial, we show you how to use Compute Model Based Data to obtain the coordinates of the center of gravity, proximal joint, and distal joint of a segment. We also show you how to do this with respect to another segment, and show you some tricks by creating virtual segments in your biomechanical model.
Although we typically use Visual3D for segment-based data, tracking the motion of a specific target has proven to be a very interesting feature for the field of Biomechanics. Using motion capture systems to obtain the 3D coordinates of a marker is essentially what they are designed to do. However, using Compute Model Based Data we can also track the path of a target with respect to any coordinate system defined in our model, including body segments.
