Sensor Material Database
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Measured BRDFs of any Material
Material reflectivity database for lidar simulation
Reflectivity is Essential for Lidar Simulation
Lidar sensors cannot be simulated without knowing the reflectivity of different materials. The reflectivity depends on the wavelength of the lidar, the viewing angle and of course the material that is measured. We measure the wavelength-dependent reflection characteristic at several angles for all kinds of materials. Check out the example materials below and request a quote for the database.
Asphalt
AC 11 DS asphalt concrete with a max aggregate size of 11 mm
Concrete
Concrete paver
Cobble Stone
Concrete cobble stone
Yellow Lane Marking
3M Stamark A721 T
Traffic Sign Front
Blue part of traffic sign 241 RA3
Traffic Sign Back
Backside of a traffic sign
T-Shirt Fabric
Lycra fabric sun yellow
Retroreflective Vest
Retroreflective stripes of a high visibility vest
NCAP Dummy
Skin material of an NCAP pedestrian dummy
Car Paint
Silver Metallic
Many more
We have an entire database of measured materials
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Lane Marking
3M Stamark A721 T
Asphalt
AC 11 DS asphalt concrete with a maximum aggregate size of 11 mm with a heavy duty surface
Concrete
C30/37 (LP) road surface concrete
Our Reflectivity Measurement Device
How the materials are measured
Patented Measurement Device
Our patented measurement device captures bidirectional reflectance values of materials in our lab or at various test sites. It consists of two rotating arms with separate laser and detector supporting multiple wavelengths from 905 nm to 1550 nm.
The output is a full wavelength-dependent BRDF, that can be used in many simulation tools. Find more information here.
Different Reflection Characteristics
Different materials have different reflection characteristics. They range from diffuse over specular to retroreflective. But it is not always either, or. Characteristics change depending on the angle. Even a diffuse material can have strong specular tendencies in shallow angles. Here are two examples of a diffuse and specular material.
Testemonials
What our customers say
Credible sensor simulation is essential for reliable perception development in agricultural automation. Across multiple projects, Persival has been a strong partner for CLAAS in establishing measurement-driven LiDAR simulation. In our joint work with Persival and dSPACE, the precise real-world material reflectivity measurements were key to establish a realistic simulation setup. This enabled a credible pre-validation of perception algorithms and helped to significantly reduce the sim-to-real gap.
Mirco Felske
Test Engineer
CLAAS E-Systems GmbH
