Fact Sheet: Open Simulation Interface (OSI)

General

Short Description/ Transmitted Information	The Open Simulation Interface (OSI) defines an interface for the interconnection between the simulation environment and the automated driving functions in virtual scenarios
Application Scope	Simulation based Engineering and Testing of automated driving functions, virtual and scenario based testing, sensor and environment simulation
Maturity	Automotive-specific shaping
Goals	Connect any automated driving function to any driving simulator, simplify and improve virtual testing
Penetration	Individual expert teams
Visibility	Approximately 10%
Promoting Bodies	Projects of the PEGASUS family (PEGASUS, VVMethoden, SET Level), VDA Leitinitiative, ASAM, referenced in some ISO standards
Type	ASAM standard (work-in-progress)
IT Standard Classification	Interoperability Standard, Integration Standard
Data Format	OSI uses the message format by Googles protocol buffers for structuring data
Relations to other standards	- ASAM OpenScenario, OpenDRIVE - MODELICA FMI 3.0 - ISO 23150 (standard for sensor output)
Overlap with other standards	not known

AVAILABLE ACCOMPANYING DOCUMENTATION

OSI Github

van Driesten, 2018: Overall Approach to standardize AD Sensor Interfaces, Simulation and Real Vehicle, Springer Verlag

The Open Simulation Interface (OSI) defines an interface for the connection between the simulation environment and the automated driving functions in virtual scenarios.
Version 3.1.2 released Jan. 2019 of OSI was published as an Open Source Project on Github and was transferred to the ASAM association. The current version from ASAM is 3.2.0.
OSI uses the message format by Google's protocol buffers for structuring data
One message for the simulation environment interface (osi::GroundTruth), which describe the simulated objects in a global coordinate system
OSI since V3.0 distinguishes between Sensor View (osi::SensorView) and Sensor Data (osi::SensorData) as input and output of a sensor
Application areas are o automated and autonomous driving irtual scenarios based testing o sensor and environment simulation
Sensor data and ISO 23150 are harmonized. ISO 23150 is the standard for sensor output
Actual developments standardise e.g. commands for the control of further traffic participants within traffic scenarios (osi::TrafficCommand and osi::TrafficUpdate)

Interoperability between Environmental Models, Scenarios, Systems under Test (SUT), and other Traffic Participants within simulations during runtime

Naming convention: always talk about Open Simulation Interface, the abbreviation OSI is already used for the ISO 7-layer-model of interprocess communication
many stakeholders with different requirements
dependance on protocol buffers which don't guarantee performance in different programming languages and in all application areas