| Anchor |
Stored transform used to keep virtual content at a placement. |
| Chroma key |
Technique that removes a selected background color from video. |
| Descriptor |
Compact representation of a local image feature for matching. |
| Drift |
Accumulated spatial pose error over time. |
| GLB |
Binary glTF container for 3D assets. |
| Hit test |
Query for a surface intersection from a ray in an XR session. |
| Keyframe |
Selected frame whose features and pose help describe a local map. |
| Optical flow |
Estimated movement of image points between frames. |
| Parallax |
Relative image motion caused by changing viewpoint. |
| Pose |
Position and orientation in a reference coordinate system. |
| Redetection |
Searching for a known image again when tracking needs recovery. |
| Relocalization |
Recovering a camera pose relative to a previously observed map. |
| SLAM |
Simultaneous localization and mapping. |
| WASM |
WebAssembly, used for computational workloads in the vision workers. |
| WebXR |
Browser API for immersive XR sessions on supported devices. |