

Pinpoint accuracy for optical tracking: discover Atracsys markers
Passive and omnidirectional technologies
optical tracking markers to enable higher accuracy
Optical tracking systems determine the precise position and orientation (6D pose) of objects in space by detecting fiducial markers: distinct, trackable points that are either passive (retro-reflective spheres or discs that bounce back infrared light emitted by the camera) or active (IR-LEDs that emit their own light).
To achieve accurate tracking, three or more fiducials are rigidly mounted on a tool or object, forming what is known as a rigid body or marker array or simply marker. Since the spatial relationship between the fiducials is fixed, the system can determine the full pose of the object in real time.
This technology is a cornerstone of computer-assisted surgery, enabling submillimeter precision in tool navigation and patient alignment.