Di-O-Matic Maskerad:
Automatic markerless facial performance capture software for Windows...
$1500 USDMaskarad uses state-of-the-art technology to automatically locate and track head motion as well as facial expressions and precise lips movements. No messy or cumbersome face marker setups, no expensive dedicated hardware and no need to outsource any part of your pipeline. Just a simple video file featuring an actor performance is all you need to create lifelike facial animations.
More info can be found at its product page