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LiDAR QA/QC in a Production Environment
- 1. www.merrick.com LiDAR QA/QC in a Production Environment June 14, 2018 UF/IFAS Mid-Florida Research and Education Center UF/FL-ASPRS Spring LiDAR Workshop www.merrick.com Matt Bethel Director of Operations and Technology matt.bethel@merrick.com 303-353-3662
- 2. OUR PURPOSE FAST FACTS Founded in 1955 by Sears Merrick and Ed Lecuyer Employee-owned with 550 employees Full-service, multi-disciplinary engineering and architecture firm headquartered in Colorado 1 2 3 4 5 6 Markets served: Energy, National Security, Life Sciences, and Infrastructure 20 office locations (17 in the U.S., 1 in Canada, 1 in Mexico, 1 in the U.K.) RESPECT, INTEGRITY, SERVICE & EXCELLENCE. We live our core values every day in how we work together, stay true to our purpose, and pursue our vision. SOLVING. GROWING. LIVING. OUR VISION Our family of employee owners collaboratively developing the right solutions to better our world. ABOUT MERRICK
- 4. Traditional Airborne LiDAR Workflow
- 5. Traditional Airborne LiDAR Workflow with QC Steps
- 6. Data Check QC Inputs: • LAS swath files • Project boundary • Point density requirement • Units selection
- 7. Data Check QC Output testing reports: • Returns • Intensity • Point density • Data voids • Spatial distribution • Relative accuracy • Sensor calibration stability • Channel to channel alignment (if multiple channel LiDAR system was used) • Data coverage • System anomalies
- 8. MARS® QC Module Data Check Report Example
- 9. Calibration Check QC Inputs: • LAS swath or tiled files • Project boundary • Point density requirement • Units selection
- 10. Calibration Check QC Output testing reports: • Measurable relative accuracy • Sensor calibration • Channel to channel alignment (if multiple channel LiDAR system was used)
- 11. MARS® QC Module Calibration Check Report Example
- 12. USGS NGP LBS 1.2 QC Inputs: • LAS swaths • Classified LAS tiles • Tile shapefile • Project boundary • Quality level selection • LiDAR checkpoints (both NVA and VVA) • Units selection
- 13. USGS NGP LBS 1.2 QC Output testing reports (Collection)
- 14. USGS NGP LBS 1.2 QC Output testing reports (Data Processing / Handling)
- 15. MARS® QC Module USGS NGP LBS 1.2 Report Example