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Sample code

We provide sample MatlabTM code to:
  • Browse through the data
  • Create a recognizer and use the data to train and test it
  • Prepare your submissions
We also provide examples of computer vision algorithms, which can be used to process videos. To cite the Principal Motion baseline method:

Principal motion: PCA-based reconstruction of motion histograms 

Hugo Jair Escalante and Isabelle Guyon. Technical Memorandum, June 2012. http://www.causality.inf.ethz.ch/Gesture/principal_motion.pdf


DOWNLOAD THE SAMPLE CODE [latest version, June 16, 2012] [Older version]


A few cool stuff you can do with the sample code...

    Render the depth image in color (not useful but pretty)              Remove the background of the depth image                               
Color depth  No background  

                        Compute gradients                                       Locate the head, dominant hand and shoulders
Gradient  Body Parts  

       Compute a map of average motion energy ...          ... and one of motion history (color index increases with time)
Motion Average  

       Compute principal components (PC) of motion ...                  ... and derive a PC feature representation
Principal morion  PC features

                           Extra the body skeleton                                        Compute a bag of STIP features
skeleton  STIP

                 Perform dynamic time warping ...                  ... and derive automatically temporal segmentation points
dtw  tempo segment


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sample_predict.csv
(30k)
Isabelle Guyon,
May 6, 2012, 9:48 PM