3D markerless motion capture: A low cost approach

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A markerless motion capture technique is described for reconstructing three-dimensional biological motion. In the first stage of the process, an action is recorded with 2 CCD webcams. Then, the video is divided in frames. For each frame, the 2D coordinates of key locations (body joints) are extracted by the combination of manual identification (mouse pointing) and image processing (blobs matching). Finally, an algorithm computes the X-Y coordinates from each camera view to generate a file containing the 3D coordinates of every visible point in the display. This technique has many advantages over other methods. It does not require too specialized equipment. The computer programming uses open source software. The technology is based on an inexpensive portable device. Moreover, it can be used for different environments (indoor/outdoor) and living beings (human/animal). This system has already been tested in a wide range of applications, such as avatars modeling and psychophysical studies.

Original languageEnglish
Title of host publicationNew Advances in Information Systems and Technologies
EditorsA. Rocha, A. M. Correia, H. Adeli, L. P. Reis, M. M. Teixeira
Place of PublicationCham
PublisherSpringer International Publishing Switzerland
Number of pages8
ISBN (Electronic)978-3-319-31232-3
ISBN (Print)978-3-319-31231-6
Publication statusPublished - 2016
EventWorld Conference on Information Systems and Technologies, WorldCIST 2016 - Recife, Brazil
Duration: 22 Mar 201624 Mar 2016

Publication series

NameAdvances in Intelligent Systems and Computing
PublisherSpringer International Publishing Switzerland
ISSN (Print)2194-5357


ConferenceWorld Conference on Information Systems and Technologies, WorldCIST 2016


  • 3D reconstruction
  • Biological motion
  • Image processing


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