Motion Capture Demo

++Overview

• Motion Analysis hardware
• optical motion capture
• 10 Hawk cameras
• EVarts 5.04 software

++Uses of Character Animation, pipeline overview

• file formats
• Autodesk MotionBuilder 7.5
• marker sets
• TGEA

++Motion Capture Production (EVarts 5.04)

• Load a previous marker set (project (.prj) file)
  • Marker set will be visible in post-process tab
  • The number of markers will directly reflect the number of tracks in your track(.trc) file
  • this will translate to points on the skeleton rig
  • depending what your final destination for your Motion capture is, this may be dictate from the model being animated (if it is already created or not)
  • in either case, the data can be massaged later in the pipeline (better to have more)
• Calibration L-seed - switch to calibration tab
  • Turn on the cameras, put the L-device on the floor, connect to cameras
  • "Run" the cameras for a couple seconds
• Mask out
  • switch to 2d mode, for each camera mask out any extraneous areas using middle mouse button (wheel)
  • basically, youu should only see the four L dots from each camera angle. mask out anything else by click and dragging rectangles
  • for each camera, use tools ==> camera settings, to adjust the threshold to approximately 300
  • "run" the cameras for a couple seconds
  • review masking for each camera, making sure there are no extraneous red/black marks
  • for each camera, click on Preview calibrations, ok to overseite and "Collect and calibrate" button
• wand calibration
  • (remove the l-seed)
  • run the cameras by hittin the run button

88 click on the ok to overwrite under the "calibration with wand" section floor, ROM

• Data output, capture
• EVarts 5.04 Post production

++Autodesk MotionBuilder 7.5

• inputting TRC data
• cleaning up TRC data
• animation
• Output formats