Passive marker sphere vs active tracking marker in system design
Introduction: Passive marker spheres and active tracking markers differ primarily in how the tracking system receives their signal. For someone reviewing tracking hardware, the word “marker” does not identify the complete technology. A passive marker sphere normally acts as an optical target for an external camera and illumination system. An active tracking marker generally includes powered elements that generate or transmit a detectable signal. This distinction changes the location of system complexity, the role of calibration, and the maintenance questions that matter during integration. The AIMOOE threaded passive retro-reflective marker provides a product-page example of the passive category, but its classification should remain separate from claims about system performance, clinical use, or official compatibility. How Passive and Active Markers Differ at the Signal Level A passive marker sphere does not generate its own tracking signal. In an optical tracking arrange...