| 1 Function | 2 Reference Model | 3 Input/Output Data |
| 4 SubAIMs | 5 JSON Metadata | 6 Profiles |
| 7 Reference Software | 8 Conformance Texting | 9 Performance Assessment |
1 Functions
The Event Description (OSD-EVD) AIM produces the Descriptors of an Event from a sequence of Scene Descriptors:
| Receives | Scene Descriptors. | A sequence of Scenes. |
| Produces | Event Descriptors | The Event. |
2 Reference Model
The Event Description (OSD-EVD) AIM Reference Model is depicted in Figure 1.

Figure 1 – The Event Description (OSD-EVD) AIM Reference Model
3 Input/Output Data
Table 1 specifies the Input and Output Data of the Event Description AIM. Links are to the Data Type specifications.
Table 1 – I/O Data of the Event Description (OSD-EVD) AIM
| Input | Description |
| Scene Descriptors | Sequence of Scene Descriptors. |
| Output | Description |
| Event Descriptors | The Event Descriptors of the Scene. |
4 SubAIMs
No SubAIMs
5 JSON Metadata
https://schemas.mpai.community/OSD/V1.4/AIMs/EventDescription.json
6 Profiles
No Profiles
7 Reference Software
Under development.
8 Conformance Testing
Table 2 provides the Conformance Testing Method for OSD-EVD AIM.
If a schema contains references to other schemas, conformance of data for the primary schema implies that any data referencing a secondary schema shall also validate against the relevant schema, if present and conform with the Qualifier, if present.
Table 2 – Conformance Testing Method for OSD-EVD AIM
| Receives | Scene Descriptors | Shall validate against Scene Descriptors schema |
| Produces | Event Descriptors | Shall validate against Event Descriptors schema |
9 Performance Assessment