Expression for $1,999

Expression is OptiTrack’s software for facial motion capture. It incorporates camera calibration, marker tracking, customizable face templates, and data cleanup for streaming or export to 3D animation packages like Face Robot and MotionBuilder.

Sub-millimeter marker tracking & labeling

Marker tracking and labeling is the foundation of Expression’s motion capture technology. Calibrated cameras and a face template are used by Expression to track and label markers to within 0.1 mm, capturing subtle movements in key facial landmarks Once labeled, the markers can be exported for mapping to face bones or handles in your character rig. Users can fine tune the system according to pipeline needs by creating additional custom face templates.

Scene video with marker overlay

Convert one of your motion capture cameras into a calibrated scene camera and record synchronized reference video tracks for each mocap take. Tracked 3D markers can be re-projected into scene video in real-time and offline, providing valuable feedback and enhanced editing in post. In addition to comparing your scene with captured marker data, reference video provides a useful visual record of an actor’s performance. By combining video and mocap data, Expression offers a complete performance capture tool—perfect for producing animation and creating a framework for artists to build on.

Simple setup & operation

Data cleanup and editing

Expression’s graph editor includes simple tools to clean up your mocap data before export to your animation software. Tools include marker swapping, gap filling, smoothing, track moving, and free-hand track drawing. Include a calibrated scene camera in your volume for a powerful reference during cleanup.

Industry standard data export

Export using industry standard C3D and FBX formats to a variety of facial animation packages, including Face Robot and MotionBuilder.

Real-time streaming plugins

Expression streams live to MotionBuilder for real-time data preview and capture within the animation software. Create additional real-time plugins for your preferred animation package or game engine with OptiTrack’s NatNet SDK.