Starts the Semantics system.
After starting, Semantics will begin processing incoming frame data for semantic segmentation.
The system must be configured before starting.
## Example
swift <br />semanticsSession.configure(with: config) <br />semanticsSession.start() <br />
Starts the Semantics system.
After starting, Semantics will begin processing incoming frame data for semantic segmentation.
The system must be configured before starting.
## Example
swift <br />semanticsSession.configure(with: config) <br />semanticsSession.start() <br />