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Point Light Action Corpus


This corpus of point light displays is intended as a resource for research on perception of biological motion.  The files come from human actions recorded with digital videotape.  The joint locations (in screen coordinates) were identified by hand on each frame (see file description for details).  The displays can be viewed here with a Java applet or as Quick time movies.  The x-y coordinate files may be downloaded and used with your own display software. 

The procedure for creating a point light file is relatively simple, Macintosh source code for creating your own files is provided.

The corpus currently contains over sixty point-light displays.  We have collected basic phenomenal report data from 16 subjects for 14 of these actions.  This was coded for accuracy (most displays were recognized by at least 90% of the subjects).  Subjects also rated how well the point-light displays matched a verb, or phrase (all displays averaged a rating of 7.35 or higher on a ten point scale).  Details of this normative data are available on this site.

If you publish a research report using these files, please email Thomas Shipley for appropriate citation (a manuscript describing the motion capture technique and corpus is under review). 

displays Point-Light Displays for various Operating Systems
mouseCoord.c Source code for, motion capture, dot swapping and error correcting programs
downloads Page to download point-light files and other data
file_descriptions Page describing the format of our point-light files
norm_data Data indicating how well our displays are recognized
Markless Motion Capture Technical Report Technical Report describing how to create point-light files





Home
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Point-Light Archive

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Temple University
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