SP2 Integration Workshop Short Introduction to the LDM Tobias Schendzielorz (TUM) Paul Mathias (MAT.TRAFFIC) SAFESPOT

Local Dynamic Maps – Requirements & Vision A real time updatable Local Dynamic Map is defined as Integration of standard digital maps with dynamic (short time) and local (short range) layers of information collected by the infrastructure or by the vehicles (road status, obstacle presence, etc.). Focus on new contents and information that is provided in real-time need of high efficiency algorithms spatial functions to support data fusion and processing mechanism definition of an adaptive optimal coverage range (only for in-vehicle) compatibility with standard digital maps The main target is to provide a representation of vehicle’s and infrastructure surroundings with all static and dynamic safety relevant elements! © LDM workshop 08/09-07-2008 Gent

Local Dynamic Maps – Map Layers com nodes, fusion result ego pos vel … rsu id type veh temporary regional info ! accident id pos … fog a,b congestion length dir map from provider landmarks for referencing tree id pos curbs… © LDM workshop 08/09-07-2008 Gent

Local Dynamic Map database and client architecture Client – server architecture The LDM database and client architecture fulfils the SAFESPOT needs of a node as it serves several units that are connected via Ethernet each client can setup a connection to the LDM several clients can be implemented for different environments and programming languages (C++, Java for CVIS) © LDM workshop 08/09-07-2008 Gent

PG-LDM Implementation using PostgreSQL PG-LDM facts and figures PostgreSQL database enabled with spatial functions PSF – AGORA-C and further function support for CVIS Windows, Linux, C++ The Level 1 API provides access functions to the PostgreSQL database. The Level 2 API encapsulates functions that support more sophisticated data retrieval. © LDM workshop 08/09-07-2008 Gent

Intersection example data - Dortmund Green belt (landmark) Curbs (landmark) Reference tracks Crossings (pedestrian, bicycle) Dividers, stop line (landmark) Traffic lights, signs, poles Lighting Arrows and further road markings Pedestrian wakling and bicycle path (landmark) slip road Building facades © LDM workshop 08/09-07-2008 Gent

NQ-LDM Implementation using SQLite Proprietary map engine solution: map database in physical storage format (PSF) layer 2, 3 and 4 databases stored separately (SQLite) API Manager will translate T/Q-API into calls to the appropriate database SQLite offers small-footprint, quick access ideal for embedded system Use of existing tools to access static map data Remote access now provided Simple Feature spec. spatial functionality to be provided on- demand © LDM workshop 08/09-07-2008 Gent

Overview of Level 1 Queries Be aware, this is for the PG-LDM!! © LDM workshop 08/09-07-2008 Gent

Useful links and information Latest PG-LDM version and information: http://bscw.safespot-eu.org/bscw/bscw.cgi/130317 Latest Navteq-LDM version and information: http://bscw.safespot-eu.org/bscw/bscw.cgi/174735 Material of the LDM Workshop in Gent: http://bscw.safespot-eu.org/bscw/bscw.cgi/168765 Contact PG-LDM: Contact Navteq-LDM Oliver.Kannenberg@teleatlas.com kees.wevers@navteq.com Christopher.Brown@de.bosch.com stephane.dreher@navteq.com