The extrinsic calibration is a prerequisite for all perception algorithms and serves as an adjustment check. Accurate calibration values and FoV-adjustments for all sensors as well as continuous “calibration-checks” are credentials for long term test drives.
So how to go from an uncalibrated setup, as seen in figure 1 (left), to an adjusted and accurately calibrated setup as seen in figure 1 (right)?
Figure 1: lidar point cloud before/after calibration
Common challenges:
| ❌ Time consuming processing |
|---|
| ❌ Complicated manual measurements of calibration targets |
| ❌ Availability of suitable calibration space |
| ❌ Establishing relation to the “Vehicle-Road-Coordinate-System” |
| ❌ Calibration of multiple sensors without overlap |
| ❌ Calibrating sensors with sparse resolution |
|---|
| ❌ Different methods and tools for different sensors/setups |
| ❌ Heavy and clumsy targets |
| ❌ Expensive equipment |
| ❌ High manual effort |
Ibeo manages these challenges with one solution:
Ibeo.CaliGraph is a standalone calibration solution that supports the static extrinsic calibration of lidar sensors. The tool determines the poses of reference- and DuT- sensors within a measurement-vehicle setup. It is designed to be simple, fast, and accurate. All methods, processes and algorithms have been validated and the automated calibration routine ensures an accuracy of <1 𝑐𝑚 (translations) and <0.1° (rotations). The solution supports every lidar sensor in a variety of setups, all of which has been documented in text and video tutorials.
The perks of ibeo.CaliGraph:
| ✅ Simple setup of calibration scenes |
|---|
| ✅ Easy and fast to use (no extended trainings needed) |
| ✅ Fully automated processing |
| ✅ Diagnose function evaluates results (and prompts to redo a calibration if necessary) |
| ✅ Portable targets |
|---|
| ✅ Highly accurate |
| ✅ Derive adjustment instructions |
| ✅No expensive equipment needed |
Setting up the calibration scene is easy. Simply highlight the vehicle’s axis of symmetry with a line laser and place some wooden targets on the laser beam. The only other prerequisites are a flat ground and enough free space (maximum 4 m x 30 m, depending on the sensor setup) as seen in figure 2. The analysis of a given calibration recording is even more simple. The automated calibration module allows an accurate calibration to VRC* within seconds. The diagnose module performs an adjustment check and evaluates the quality of the calibration results. The manual modules allow an experienced user to carry out any imaginable calibration task, including cross-calibration, absolute calibration to Ground Truth data*, intrinsic sensor calibration any much more.
Figure 2: Overview of supported sensor setups and calibration scenes for a measurement vehicle with different sensors/setups. Those simple target setups mixed with the efficient algorithms of the calibration tool ibeo.CaliGraph ensure accurate calibrations of all automotive lidar sensors.
Find more information and see actual calibrations in our timelapse video or ask our experts: StaticCalibration@ibeo-as.com
Das könnte Sie auch noch interessieren
03/2021
Wie umweltfreundlich sind die Events von Ibeo?
Der Klimawandel schreitet weiter voran. Auch der Eventssektor trägt maßgeblich dazu bei. Er ist eng verbunden mit den Reise- und Hotelbranchen und hat somit eine große Reichweite. In diesem Beitrag hat Ibeo analysiert, wie umweltfreundlich Events sind, an denen wir teilgenommen haben.
12/2022
ibeoNEXT Solid-State Lidar Solution for Autonomous Driving
Ibeo has developed a completely new, industry-wide 4D lidar sensor system. The ibeoNEXT's modular design is unique to the lidar market and, depending on the application, offers a selection of 11.2 degree, 60 degree or 120 degree optics (32 degree optics currently being developed).
02/2022
Smart City: Moderne Konzepte & innovative Technologie für die Städte unserer Zukunft
Smart Home ist bereits in aller Munde: Viele Menschen nutzen bereits intelligente Technologien, um verschiedenste Bereiche in ihrem Haushalt zu steuern und damit ihre Wohnqualität zu verbessern. Die Vorteile der Digitalisierung können aber nicht nur im privaten Bereich genutzt werden – sondern auch und ganz besonders im öffentlichen. Das Konzept der Smart City wird in der Stadtentwicklung immer wichtiger. Im Folgenden beantworten wir die wichtigsten Fragen zum Thema Smart City.
Der Ibeo Newsletter: kompakt & interessant
Durch Klicken auf die Schaltfläche ‚Anmelden’ stimmen Sie zu, dass Ihre eingegebenen persönlichen Daten dazu verwendet werden, um Ihnen Informationen zu relevanten Themen und spezifische Veröffentlichungen von Ibeo zuzusenden. Sie haben das Recht, Ihre Zustimmung jederzeit zu widerrufen. Der Widerruf der Zustimmung beeinträchtigt nicht die Rechtmäßigkeit der Verarbeitung auf Grundlage der Zustimmung vor ihrem Widerruf.
Hinweise zum Datenschutz finden Sie in unserer Datenschutzerklärung.