1 / 30

3D Laser Scanning

3D Laser Scanning. Laser Scanning Definitions : 1.) Laser Scanning: High speed reflector-less distance measurements coupled with angles used to produce a 3D “Point Cloud” 2.) Point Cloud – collection of 3D coordinate nodes that spatially depict a scene.

lenore-trujillo
Download Presentation

3D Laser Scanning

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 3D Laser Scanning

  2. Laser Scanning Definitions: 1.) Laser Scanning: High speed reflector-less distance measurements coupled with angles used to produce a 3D “Point Cloud” 2.) Point Cloud – collection of 3D coordinate nodes that spatially depict a scene. 3.) Point Cloud Software – database driven, highly graphic intensive software that allows rich point cloud manipulation and computation 4.) Accuracy – 3D spatial uncertainty

  3. Laser Scanning Benefits: • Reduction - Direct labor costs of field data collection. • Increased Safety of collection efforts • Tool for launching into new markets and services • Can provide traditional deliverables from scan data • Ownership of the data: • Completeness of data sets for deliverables and checks • Recurring service fees from one data set • More accurate finished product – higher density data

  4. Reduced errors and rework: • Traditional methods: Greenfield projects see excess of 1% of the project budget to errors and rework, and Brownfield projects see excess of 5 – 10% of the project budget to errors and rework • Laser scanning methods: achieve better, faster, cheaper and lower-risk project execution by reducing errors and rework. Virtually eliminates Greenfield project errors and rework, and laser scanning reduces Brownfield project errors and rework by 2-5% • Contractor benefits: increased competitiveness and profitability • Business benefits: faster time to market, fewer days of lost production and reduction of concerns in public safety and environment

  5. Technology drivers • Advantages over traditional methods • Accuracy: laser scanner’s direct digital measurement and recording of existing conditions reduces project execution risks and field rework • Speed: with the ability to capture thousands of point per second, laser scanning greatly improves productivity • Completeness: Laser scanning provides a more complete capture of existing conditions and reduces the potential for errors in new design work • Laser scanner measure methods • Time-of-flight: calculate distance by measuring the time of flight of a laser pulse. Good for long ranges and accuracy • Phase-based: measure distance by calculating phase differences in the laser beam. Good for short ranges and scan rate

  6. Work process practices • When to use laser scanning: • Completing manual methods are to expensive by comparison • Completing methods introduce safety risks • When methods provide inadequate level of detail • When other methods would take too long • When errors represent a significant risk to project cost and schedule • Laser scanning project: • Determine the deliverable: work with customer to determine deliverable to guard against unnecessary work • Execute scanning project: use proper field techniques to capture desired data and determine registration method and set targets accordingly • Manage point-cloud data: process data to meet customer’s deliverable

  7. Deliverables • Process and power: • 3D models: of piping and building interiors to accurately map alignments of pipes and interior features for retrofit, new equipment install and capture of existing conditions • 2D drawings: traditional drawings for as-built conditions, documentation and biding • Snapshot Photos or Images • Civil, building and transportation: • 3D models: of existing conditions used for retrofit, road design, historic preservation and expansion design • 2D drawings: traditional drawings for as-built conditions, documentation, point creation and biding • Point clouds with 3rd Party Software

  8. Laser Scanning Best Practices • Finish level one learning curve before attempting the first real project. • Find inside technical champion that wants to drive it… • Start using on existing projects immediately – even if only an hour a day. • Most projects require that you mix scanning data with traditional survey data. (Total Station or RTK data) • Deliver Snap Shots and Fly thru videos with your fee proposals as well as final deliverables. • Bill by the job – not the hour if possible • Branch well outside your traditional client list • Don’t “Over Scan” the project • Utilize other 3rd party software including point cloud viewers • Focus on developing “solution” workflows and deliverables; i.e. don’t just scan to say you scanned.

  9. GLS-1000 Standard Components • Head cover • Plastic carrying case w/casters • 2 BC-30D battery chargers • 2 chargers, 2 AC-12 AC/DC converters & 2 AC cables • 4 BT-65Q batteries • 1 SD card

  10. 2005 update Market Volume and Forecast Forecast（Hardware, Software, Services) Market volume is expanding at a rate of 30-40% annually SPAR Point Research LLC http://www.sparllc.com

  11. Sparllc.com Scanning Articles

  12. Scanning Applications? Road/intersection • Cross sections • DTM surfaces • Profiles • Grid Topo Alta surveys (Supplement) Volumes • Materials • Stockpiles • Quarries Forensic surveys • Accidents • Homicides • Event planning Historical preservation Industrial – Structural As-Builts • Renovations – Retrofits

  13. Volumes

  14. Forensic Surveys

  15. Historical Preservation Scan data 2D Drawings 3D Animation

  16. Mass 3D Point Cloud Acquisition & Manipulation

  17. Image Capture and Live video

  18. Mesh Objects and Annotations

  19. GLS-1000 Demo With Scan Master Software

  20. Example Projects

  21. Deliverables from Scanning • Mesh Surfaces • 3D Polylines – Cross Sections etc.. • Elevation Visuals • 3D Coordinate Nodes • AVI Movie Fly Thru • Models

  22. Modeling Examples • Stone Pile Volumes • Rural Road Topographic Survey • As-Built Historic Bridge

  23. Modeling Examples

  24. Road Cross Sections

  25. Structural Tower Scan

  26. Rock Pile Volumes

  27. Exciting New Developments • Clear Edge 3D Software – Edge Detection Software and advanced filtering • 3D Fusion - Ground Penetrating Radar (GPR) integrated with laser scanning – map undersurface voids, rebar, and structures • Safe – highly detailed surface analysis • More downstream point cloud processing capabilities

  28. ClearEdge 3-D Software Action 1 – Remove unwanted noise from Point Cloud Action 2 – Model Edges and Solid Fill – Arch. Application

  29. Kubit “Point Cloud” Software • AutoCad Application • Allows for point cloud manipulation in AutoCad • Use regular AutoCad commands • Basis for creating Model if desired • Pull 3D dimensions

  30. Thanks

More Related