Introduced the ability to track 3D geometry objects against live-action footage, which is essential for complex object replacement or augmentation.
Traditional point tracking fails when surfaces are untextured or moving organically (like a flag or a person's shirt). V4.0 introduced , allowing users to import a low-resolution proxy model, project it into the scene, and track the object's movement in 3D space using shaded render comparisons. This bridged the gap between matchmoving and basic object tracking. The Pixel Farm PFTrack v4.0