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2D-3D Motion Analyzer

2D-3D Motion Analyzer

Somy Mavica FD-81 digital cameraThe core of the MA is project manager that controls

  • 5 independent video (avi) channels,
  • 5 independent 2 views Tracks  for frame sequences and 2D wired models,
  • 2D and 3D models for moving object

All images and video sequences can be taken by digital cameras.

Tracks Editor

Key frames capturingTracks Editor provides user with a simple interface linking Video Player and Track Editor modules for import of still images or frame sequences for further 2D-3D modeling and analysis.

Video Player features:

  • 5 channels for imported video
  • enhanced video player
  • time segment editor
  • single frame or sequence of frames grabbing
  • import of captured frames into the Track editor.

Track Editor features

  • 5 tracks x 2 views for key frames
  • import of images from files or Video Player module
  • editing and playing tracks
2D modeling and analysis

2D EditorNext step in motion analysis assumes creation of 2D wire models, for all frames. 2D Editor has a special set of drawing tools for building models:

  • 4 angled lines with angle measurement,
  • 4 lines,
  • 5 numbered markers,
  • freehand tool,
  • scaling marker.

Creating 2D model of a real moving object (e.g. golf swing on the presented picture) user need to specify only position of elements for the key frames. Similar to the animation programs MA interpolates position and orientation of elements in accordance with frame position on the timeline. For steady movements user have to specify only start and end points of the element.

With the help of 2D Editor that operates with two (e.g. front and side) views of the object user may create two wire projections of moving object for further 3D reconstruction.

3D model reconstruction and analysis

3D reconstruction3D Analyzer module reconstructs 3D model from two model projections, created at the previous step by the 2D Editor. 3D Analyzer Viewer controls zoom, position and orientation of 3D model.

3D Analyzer similar to 2D Editor provides user with instruments for measurements, but this time in 3D space: angles, distances, velocities. Module builds 3D trajectories for selected points of models.

 

     
   

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