Difference between revisions of "MATLAB code"

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== Rosbag extraction ==
 
== Rosbag extraction ==
[[File:MATLAB dualvideo example.png|600px|thumb|right|rosbag_video.m example, using two webcam feeds.]]
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[[File:MATLAB dualvideo example.png|600px|thumb|right|'''rosbag_video.m''' example, using two webcam feeds.]]
  
 
'''Official methods:''' <br>
 
'''Official methods:''' <br>

Revision as of 13:34, 9 August 2019

Introduction

Training Technology Lab uses MATLAB for most data processing and visualization purposes. Several scripts have been written to work with our various technology.
Here is a list of the projects:

  • Rosbag extraction
  • EMG analyzer

Rosbag extraction

rosbag_video.m example, using two webcam feeds.

Official methods:
Viewing: For viewing video stored in a .bag file, rqt_bag is the standard tool.

Extraction: To extract video (which are just compressed/uncompressed images) several methods exist. We have often used bag2video.

MATLAB scripts:

rosbag_loader.m Converts .bag files into .mat files. Must be done before using the other 2 scripts

rosbag_plotter.m Automatically plots known data formats)

rosbag_video.m Automatically converts rosbags into .avi files with data plot overlays.
It can use single or dual videos and plot up to 4 data sets.

EMG analyzer

Purpose: For analyzing EMG data recorded with Myon electrodes and ADInstruments AD converter via ROS-setup in Training Technology Lab

FAQ/Debugging

This sections relates to all common problems with the software.