| Aspect angle |
Head rotation degree (in degrees) on each of the three axes (up/down tilt relative to the horizontal axis; left/right tilt, relative to the vertical axis; a rotation about the vertical axis). |
| Bestshot, best detection |
Best shot is selected from all frames of the track. The main conditions for best shot selection are appropriate quality and the presence of a face with best aspect angle. Such conditions are set through FaceStream configuration. |
| Detection |
Face detection in the frame. |
| Descriptor |
A set of unique features received from the warp. A descriptor requires much less storage memory in comparison with the sample and is used for comparison of faces. |
| Event |
LUNA PLATFORM entity, which contains information (city, user data, track id, etc.) about one person and/or body. This information is transferred to the LUNA PLATFORM by the FaceStream application. For a complete list of the transferred information, see the OpenAPI LUNA PLATFORM documentation. |
| Normalized image, warp |
Certain image format with horizontally aligned face. Used when working with LUNA PLATFORM. Such image contains all necessary information about the face and allows for faster process by the system. |
| Portrait |
Face image fragment from a frame, selected in accordance with algorithm configuration and GOST 19794-5-2006 / ISO IEC 19794-5 2005(E) standard requirements. |
| Track |
Information about object’s position (face of a person) in a sequence of frames. If the object leaves the frame zone, the track doesn’t discontinue right away. For some time, the system expects the object to return and if it does, the track continues. |
| Tracking |
Object (face) tracking function in the frame sequence. |