ISO 17215-3:2014 specifies the standardized camera messages and data types used by a VCIC camera (OSI Layer 7).
Applications hosted on ECUs want to communicate with one or more cameras (e.g. "Ask camera for parameters."). If the applications can use standardized services supported by the cameras (API layer 7), the development of a vision application should be independent of the camera used. The services can be implemented by general libraries.
The definition of streaming data are not an issue of this API.
The general terminology defined in ISO 17215-1 is also used in ISO 17215-3:2014.