Tutorial #9: Introduction to ASAM OpenMATERIAL 3D Materials

In this video, Clemens, CTO of Persival, shifts focus from geometry to the material side of the ASAM OpenMATERIAL 3D standard. He explains how physical and wavelength-dependent material properties are defined, stored, and used in simulation environments, enabling realistic sensor modeling for technologies like lidar and radar.

https://www.youtube.com/watch?v=ePf-70MM-Ck

• Material Data Structure: Learn how material properties are defined using JSON-based .xomp files and extended through .xompt lookup tables for advanced, wavelength-dependent data.

• Sensor-Specific Material Behavior: Understand why different sensors (e.g., 905 nm vs. 1550 nm lidar) require distinct material definitions, and how the standard supports this through electromagnetic and optical property tables.

• Metadata & Licensing: Explore how each material entry includes metadata such as name, description, author, and licensing, ensuring traceability and compliance in simulation workflows.

• BRDF Lookup Tables: Discover how Bidirectional Reflectance Distribution Functions (BRDFs) are used to model reflection behavior across angles and wavelengths, supporting both real-time and offline simulations.

• Real-World Measurement Integration: See how Persival’s reflectivity measurement device captures BRDF data for different materials, enabling accurate simulation.

Tools & Standards for Co-Simulation

• ASAM OpenMATERIAL 3D: https://github.com/asam-ev/OpenMATERIAL-3D

• Persival Reflectivity Measurement Device: https://www.persival.de/material-measurements

Next Steps: In the next tutorial, Clemens will demonstrate how to link these material definitions to 3D geometry and access them within simulation environments.