StickFigure

Description

StickFigure is a plotting and animation tool for C3D coordinate data. This is the file format used for storing both coordinate and analog data by VICON optical motion capturing systems. The program runs under Matlab 7 (release 14), and was mainly designed for aiding biomechanical research. More detailed information concerning the operation and data conventions can be found in the function documentation of the script files.

With StickFigure you can:

Load C3D files (both integer and floating format)
Apply a marker setup directly from MKR file
Plot a stick figure for any given frame, and at any angle
Animate the stick figure, both real-time and in slow motion
Interpolate gaps in the coordinate data, and apply recursive low pass filtering
Visualize external forces
Save trials as MAT files
Export trials as AVI movies, or as bitmap image series

Screen Shots

Downloads

stickfigure-v6-0-2.zip - The actual program (38 Kb)

demo-trials.zip - Demonstration trial files (2,70 Mb)

loadc3d.zip - Seperate function for importing C3D data into the workspace (8 Kb)

Installation

Etract the contents of the installation zip file in a fresh folder, preferably in the vicinity of the Matlab toolboxes. Then add this folder to the path definition list. Typing "stickfigure" from the command prompt should then invoke the user interface.

Disclaimer

This software is part of the public domain, and may therefore be distributed freely for any non-commercial use. Contributions, improvements, and especially bug fixes of the code are more than welcome.

Jasper Menger
j.t.menger@alumnus.utwente.nl
Last update: 2011-jan-05