january 2017 - cdn.ymaws.com · topcon white paper - ebee rtk accuracy assessment the ebee rtk can...
TRANSCRIPT
January 2017
Mapping with Drones: Key Considerations and Factors
to Achieve Desired Accuracy
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Presentation Overview
1. Introduction – DroneViewTechnologies
2. Market Focus – 2015 through Today
3. Outlook for 2017
4. Commercial Drone Services
5. Drone Project Evaluation
6. Drone Project Accuracy
7. Representative Drone Projects
8. Questions & Discussion3
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Introduction
Two full years of commercial drone operation
Flown hundreds of successful missions
Completed projects in over 20 states
Success requires multiple skill sets and domain expertise
The real value to our clients is in safely using drones to provide accurate and timely data in their requested format at a competitive price point.
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• Refined Focus and Streamlined Services Offering• Serve enterprise customers with recurring needs• Focus on complex solutions with high value add• Bring domain expertise and a consultative approach to each project• Deliver quality services to clients through:
• Accuracy, Cost, Safety, Timeliness
March 2015
January 2017
Market Focus
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1. The commercial drone industry is facing a Tipping Point where largeorganizations will move from exploring how to incorporate drones in their operationsto widespread mainstream implementation in 2017.
2. Technology Enabled Service Offerings coupled with the requisite domainexpertise will be the pathway for widespread enterprise drone adoption.
3. Accuracy Matters. Sophisticated companies are recognizing that high precisionmapping utilizing drones (and manned aircraft) for image (or LiDAR) acquisition isnot simple and to consistently achieve desired results requires a team ofspecialists.
4. Strategic Partnerships – aligning organizations with symbiotic expertise andrelationships to deliver solutions to enterprise customers will become more prevalentin 2017.
5. Acquisition, Consolidation and Contraction. Many are finding that a drone and abusiness card does not constitute “a sustainable business”. The drone industry willface a shakeout in 2017 resulting in fewer companies with more focused andspecialized offerings.
Outlook for 2017
Commercial Drone Services
We deliver quality services to our client’s through:
Accuracy Achieve an accuracy that meets or exceeds expectations.
CostProvide a complete drone solution and requested deliverables at a competitive price point.
TimelinessPlan, acquire, process and deliver to an improved schedule.
SafetyComplement existing solutions, fitting between higher altitude and terrestrial data acquisition platforms.
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This is what we do.
Commercial Drone Operations
FAA Regulations (Part 107)
Insurance Certifications
Drones & Equipment
Maintenance & Service
FAA UAV Pilot Licenses
UAV Pilot Training
Documented Procedures
Professional Licenses & Certifications
Post-Processing: Hardware, Software, Training & Support
Accuracy Standards – Certification/Reporting 8
This is how we do it.
Project Evaluation – Drone? Communication regarding the project requirements: Location Site conditions (vegetation cover) Accuracy Schedule Deliverables Budget
Evaluate alternate solutions? Traditional Photogrammetry Mobile LiDAR Airborne LiDAR Terrestrial LiDAR Conventional Ground Survey
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Drone Imagery Acquisition
FAA Airspace Review
Flight Planning (Office)
Mobilize Drone
Site Reconnaissance
Optimize Flight Plan
Set Ground Control
Imagery/Data Acquisition
Validate/Upload Imagery
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Imagery Processing Photogrammetric Software
Orthoimagery 3D Point Clouds Elevation Models (DTM,TIN,DSM) Contours Volumetrics Planimetric Features 3D Models
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Drone Project Accuracy Absolute accuracy
ASPRS Standards
Client Expectations – accuracy needs to be a product driven requirement.
Pix4D Photogrammetric Processing Software:The accuracy of the results can not be higher than the GCPs' accuracy. Generally, the expected accuracy for a correctly reconstructed project is:
1-2 GPR horizontally (X,Y coordinates)
1-3 GPR vertically (Z coordinate)
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White Papers – UAV Accuracy Pix4D White Paper – How accurate are UAV surveying methods – Feb 2014
Results are comparable to traditional photogrammetry results yielding 2-3 x GSD. The mean deviation between the Pix4D surface and the (terrestrial) LIDAR surface is
about 3 cm.
Topcon White Paper - eBee RTK Accuracy Assessment The eBee RTK can achieve 3 cm horizontal and 5 cm vertical accuracy …..level of accuracy of between 1-3 x GSD
Keystone Aerial Surveys, Inc. - Accuracy of UAS Photogrammetry: A Comparative Evaluation – Dec 2016
…..all of the UAS sensors generate 7cm or better vertical classification in the ASPRS accuracy specification, making the data acceptable for creating 1-foot contours…..
…..it is likely that a result with a consistent RMSE of around 1 to 2cm would be possible.
Aerial Services Inc – Just How Accurate Is Your Drone? – Jan 2016 Best possible positional accuracy today has error of 1 to 1.5 pixels (RMSE).
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ASPRS Positional Accuracy Standards for Digital Geospatial Data(Edition 1, Version 1.0 – November, 2014)
Ground Control
Accuracy of ground control designed for elevation data, or planimetric data and elevation data production:
RMSEx, RMSEy or RMSEz= 1/4 * RMSEx(Map), RMSEy(Map) or RMSEz(DEM)
ASPRS Accuracy Requirements
VerticalControl Source
Survey Accuracy
(cm)
ASPRS MapAccuracy
RMSEz (cm)Leveled <0.5 <2.0
Total Station / GPS <2.0 <8.0
There are many factors that affect these numbers.
2014 ASPRS Accuracy Standards
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Compared with Legacy Standards
Control SourceSurvey
Accuracy(cm)
ASPRS MapAccuracy
RMSEz (cm)Leveled <0.5 <2.0
Total Station / GPS <2.0 <8.0
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7. Representative Drone Projects
1. Stockpile Volume Calculations
2. Land Development – Topographic Mapping
3. ALTA Surveys - Topographic Mapping
4. Landfill – Topographic Mapping
5. Landfill – Topographic Mapping
6. Volume Calculations & Topo Mapping
7. Mining – Topographic Mapping
8. 3D Structure Models – Building Rooftop
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# 1 – Stockpile Volume Calculations
<24 hours to deliver volume reports, point cloud & orthos
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Volumetrics Accuracy
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# 2 – Land Development – Topo Mapping
100 acres flown, 25 acres mapping, 1.6” (4.1cm) GSD, 13 GCP1278 Check Points, RMSEz 0.17 ft (5.2 cm), 1.25 x GPR, <72 hours to deliver
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# 3 – ALTA Survey & Topographic Mapping
40 acres flown, 25 acres mapping, 0.7” (1.8 cm) GPR, 9 GCP54 Check Points, RMSEz 0.12 ft (3.7 cm), 2.1 x GPR, <5 days to deliver
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Orthoimagery
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Point Cloud
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CAD Drawing – Plan, TIN, Contours
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# 4 – Landfill – Topographic Mapping
200 acres flown, 70 acres mapping, 1.6” (4.1 cm) GPR, 13 GCP16 Check Points, RMSEz 0.04 ft (1.2 cm), 0.3 x GPR, <24 hours to deliver
25120 acres flown, 70 acres mapping, 1.6” (4.1 cm) GPR, 13 GCP16 Check Points, RMSEz 0.15 ft (4.6 cm), 1.1 x GPR, <5 days to deliver
# 5 – Topographic Mapping - Landfills
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# 6 – Volume Calcs & Topo
40 acres flown, 20 acres mapping, 1.5” (3.8 cm) GPR, 6 GCP90 Check Points, RMSEz 0.28 ft (8.5 cm), 2.2 x GPR, <24 hours to deliver
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# 7 – Mining – Topographic Mapping
390 acres flown, 110 acres mapping, 2.4” (6.1 cm) GPR, 5 GCP
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# 8 – 3D Structure Models – Building Dome
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# 9 – Inspection Services – Tall Structures
