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Perception Neuron Inertial Motion Capture vs Optical Mocap Systems And The First Production Motion Capture Session Experience

Well, the first motion capture session is over and I finally managed to find time to write a post about this exciting experience. The video of the process is still in progress and I will probably be able to post it after finalizing the 4-th and final redaction of the previz.

Or not, since it's getting more and more difficult to find time for logging. Go figure.

Armen mocap session experience

Hence today I'll mostly talk nonsense about the differences between optical and inertial motion capture systems and what pros and cons the latter can have in comparison with traditional optical systems like Optitrack. It's something I had to study before investing into the full inertial Neuron MoCap kit to make sure I'd get the most bang for buck when recording action sources for the film.

Optical tracking systems

Pretty sure you're familiar with those "classic" motion capture markers used by cameras and specialized software to track each marker's spacial data for transferring calculated translation onto 3D objects or skeletons. If not, here's an excellent article at Engadget to get you up to speed.

andy serkis mocap actorLooking good, Mr. Serkis!

Among optical MoCap solutions Optitrack is arguably one of the better known ones. Guys at OT aim at providing the most affordable optical MoCap cameras and gear. Here's the simplest set-up one would need to capture motion using an optical MoCap system: