Multisubject: Difference between revisions
Line 78: | Line 78: | ||
[https://youtu.be/lT6syqzs2OQ Link to YouTube video] | [https://youtu.be/lT6syqzs2OQ Link to YouTube video] | ||
{| class="wikitable mw-collapsible mw-collapsed" width="100%" | {| class="wikitable mw-collapsible mw-collapsed" width="100%" | ||
Line 88: | Line 87: | ||
|} | |} | ||
===Compute Model Based Command=== | ===Compute Model Based Command=== | ||
Revision as of 15:08, 4 April 2022
Language: | English • français • italiano • português • español |
---|
Introduction
The multi-subject option allows users to easily work with datasets that include more than one subject in a dynamic trial. For example, two people sparring or dancing within the capture volume.
It's expected that subject prefixes are used in the C3D files. For example, a target is named "S001:LMK" where "S001:" is the subject prefix and "LMK" is the target name (note: most camera manufacturers already support this option).
For the static trial, the multiple subjects can be in the same C3D file, or in multiple static C3D files.
NOTES:
- If only collecting data with one subject in the volume, nothing about your processing procedure should change and you should not export C3D files with subject prefixes from your camera manufacturer.
- If you had a subject in one static trial, and a bench in another static trial. The two static trials can be associated and the segments in both trials will be created in the dynamic trials. If you are collecting data for one subject with multiple static trials, go here for more information.
- This documentations refers mostly using the multi-subject workspace with two subjects, however, you can use as many subjects as you would like.
Model Tab
ALL_SUBJECTS, NO_SUBJECT, subject prefixes
|
Important Terms
Subject Prefix: In the C3D file, there is a parameter to specify the subject prefix.
|
Subject Tag: A subject tag associates a generic name to a subject prefix.
|
Pipeline
- The first step to writing a pipeline is to assign a subject tag to a subject prefix using the Set_Subject_Tag command. This is important since a subject prefix can be different for each data collection (ex. "S001:", "S002:"). The subject tag should be something general (ex. "Pitcher", "Catcher").
- Once the subject tags have been defined, you can use the subject tags the same as you would a file tag using the Select Active File command.
- The resulting pipelines will work on the active subject tags that were specified in the Select Active File command
Important Pipeline Commands
Example
Model Building
Model Building Information |
---|
Building a model template should be the same when using one subject, or two. Create one model template for each marker set. You can apply and append model templates to different subjects. |
Compute Model Based Command
Compute Model Based Data Information |
---|
The compute model based functionality works the same as it always has, but also allows the customer to use Subject_Tags to identify when signals should be calculated for every subject in the model, between subjects, etc. |