Join members of the OpenSim Team on Wednesday July 26th for an introduction to OpenSim and new tools for rapidly developing musculoskeletal simulations.

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Download the example data: ExampleData.zip

Part 1: OpenCap

1. Create account

1. Create an OpenCap account: https://www.app.opencap.ai/.

2. Install requirements

This part of the workshop may be completed in Windows, Mac, or Linux. It will require cloning/downloading the opencap-processing Github repository and setting up a Python environment using Anaconda. Follow the install instructions here or perform the following steps:

1. Open the Anaconda Prompt (or, Powershell on Windows, Terminal on Mac, etc).
   1. This assumes you have installed Anaconda already (see above TODO link)

2. Create environment (python 3.9 recommended)

   Code Block
   C:\> conda create -n opencap-processing python=3.9

   
   

3. Activate environment

   Code Block
   C:\> conda activate opencap-processing

   
   

4. Install OpenSim

   Code Block
   C:\> conda install -c opensim-org opensim=4.4=py39np120

   
   

5. (Optional): Install an IDE such as Spyder

   Code Block
   C:\> conda install spyder

   
   

6. Clone/download the repository to your machine
   1. Using Git

      • Navigate to the directory where you want to download the code. For example:

        Code Block
        C:\> cd Documents

        
        

      • Clone the repository

        
        

        Code Block
        C:\Documents> git clone https://github.com/stanfordnmbl/opencap-processing.git

        
        

   2. Without using Git
      
      • Download the repository by visiting https://github.com/stanfordnmbl/opencap-processing/archive/refs/heads/main.zip
      • Unzip the folder
        • We will assume your PATH looks like C:\Documents\opencap-processing and that the path to the README file is C:\Documents\opencap-processing\README.md
7. Install required Python packages

   1. Navigate to the directory (make sure you are in Documents)

      Code Block
      C:\Documents> cd opencap-processing

      
      

8. Matlab
   • Matlab 2016b or later (64-bit). Matlab 2018a or later is best.
9. A text editor (e.g., Notepad++)

https://github.com/stanfordnmbl/opencap-processing#install-requirements

Documentation

OpenSim API docs

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Visit the Moco website here.

Slides

TODO

Publications

Uhlrich SD, Falisse A, Kidzinski L, Muccini J, Ko M, Chaudhari AS, Hicks JL, Delp SL (2022) OpenCap: 3D human movement dynamics from smartphone videos. bioRxiv. https://doi.org/10.1101/2022.07.07.499061

Werling K, Bianco NA, Raitor M, Stingel J, Hicks JL, Collins SH, Delp SL, Liu CK (2023) AddBiomechanics: Automating model scaling, inverse kinematics, and inverse dynamics from human motion data through sequential optimization. bioRxiv. https://doi.org/10.1101/2023.06.15.545116

Dembia CL, Bianco NA, Falisse A, Hicks JL, Delp SL (2020) OpenSim Moco: Musculoskeletal optimal control. PLoS Comput Biol 16(12): e1008493. https://doi.org/10.1371/journal.pcbi.1008493

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