Inspect3D Tutorial: Driveline

Through the OpenBiomechanics Project, Driveline Baseball has made elite-level motion capture data publicly available. The data can be downloaded from Driveline's GitHub repository.

Having access to large datasets is a great asset, but processing these large datasets can take time (and patience). Inspect3D is designed to streamline this process. The steps in this tutorial describe how to create CMZ files from the pitching and batting data sets, then inspect and group the data in Inspect3D.

Download

Download the files directory from the repository (Code -> Download ZIP).

Data Structure Outline in openbiomechanics-main folder:
baseball_hitting code v3d CMO.v3s model hitting_v1_model_hybrid.mdh data metadata.csv c3d baseball_pitching code v3d CMO.v3s model v6_model_hybrid_lm.mdh data metadata.csv c3d

C-Motion Specific Files:

1. Filter Script
2. Event Script
   1. Note: The event script updates the force platform parameters. Visual3D automatically combines the forces when one foot is in contact with two plates but requires the surfaces to be parallel (or close to). This script adjusts the corners which are coincident to allow the forces to be combined. This script is specific to this data set.

Outline

1. Build CMZs
2. Build Group definition
3. Inspect data

Pitching

1. Click Load Library Toolbar option
   1. In Library Path Dialog, click Build CMZs
2. In the Build CMZ Dialog:
   1. Set the path to:
      1. C:\...\openbiomechanics-main\baseball_pitching\data\c3d
   2. Metadata File:
      1. C:\...\openbiomechanics-main\baseball_pitching\data\metadata.csv
   3. MDH File:
      1. C:\...\openbiomechanics-main\baseball_pitching\code\v3d\model\v6_model_hybrid_lm.mdh
   4. Set Script Count to 3:
      1. C:\...\CMotion Files\Filter.v3s
      2. C:\...\CMotion Files\Events.v3s
      3. C:\...\openbiomechanics-main\baseball_pitching\code\v3d\CMO.v3s
   5. Click Create CMZs

Hitting

Driveline Hitting Biomechanics