3D Data Capture

Applications of LaserScanning andModeling SupportingOffshore Construction

Presentation Overview

• Who’s Speaking

• Project Scenario

• Project Scope

• Equipment Utilization

• Operations

• Post Processing• Post Processing

• Deliverables

• Applications

• What’s Next?

Who’s Speaking

Damien Goodyear

Subsea Senior Installation Specialist

Geomatics Engineering Technology.

Previously Held Positions:Previously Held Positions:

• Dimensional Control Manager, UTEC Survey, Inc.

• Dimensional Control Surveyor, Serimax/BP Thunderhorse project.

• Offshore Surveyor for Fugro Jacques Ltd..

• Heavy Civil Superintendent for Fairview Investments.

• Project Engineer for HKR.

Project Scenario

Project Scope

Client requested 3D as-builtdata of vessel to supplementout-dated 2D drawing.

The SOW included theThe SOW included theobservations of all deck detailaft of center carousal includingpipe firing line, envelope ofcrane and deck modularcomponents.

Initial purpose of as-built detailwas to aid in vessel decklayout.

Equipment Utilization

Product Specifications

• Type Phase-Shift• Range 187m ambiguity level• Linearity Error <1mm

Leica HDS7000

Ultra-High Speed Laser Scanner

• Linearity Error <1mm• Scan Rate Up to 1,016,727 points/sec• Field of View 360°Horizontal, 320°Vertical

Equipment Utilization

Product Specifications

• Type Robotic Total Station• Range Up to 5500m with Prism Cluster

Up to 400m Reflectorless

Leica Viva TS15

Robotic Total Station

Up to 400m Reflectorless• Dist. Accuracy 1mm +1.5 ppm• Ang. Accuracy 1” (0.3 mgon)• Key Features Single Person Survey Operation

(ATR) Automatic Target AimingPrism Power SearchImage Assisted Surveying

• Optional Add-on GS15 GNSS Antenna w/RTK

Operations - Survey & Scan Control Layout

Leica HDS 6” Black & White, Tilt & Turn Targets.

Used to establish scanner control. The portabletargets can be tilted and turned for a preciseorientation to the scanner. Standard 5/8” threadallows it to interface with several mountingsystemssystems

Leica GZM29-31 Reflective Tape Targets

Used to establish survey control Network. Tapetargets are often permanently secured andcoordinated with the vessel’s reference frame.

Operations – Scanner Setup Stations and DataAcquisition

Scan locations and settings are based on:

• Accuracy specified in SOW

• Coverage areas

• Scheduling restraints

• Accessibility

Operations – Scanner Configuration

Post-Processing - Survey & Scan Control

Traceable metrology 3D graphical softwareplatforms that performs complex analysistasks.

• Instrument Interfaces• Spatial Transforms• Geometry Comparison, Build, & Analysis• Automation• Dynamic Reporting• CAD Exchange• SA Reverse Design• SA Pipe Fitting

Post Processing - Survey & Scan Control

Establishing the Vessel Reference Frame

Post Processing - Survey & Scan Control

Best-Fit Transformations

Post-Processing – Point Cloud Registration

Cyclone-REGISTER

Cyclone-REGISTER provides the complete setof tools for aligning point clouds capturedfrom different scanning positions, quickly andaccurately. Cyclone-REGISTER supports theaccurately. Cyclone-REGISTER supports theuse of Leica Geosystems HDS targets to geo-reference scan data, as well as the ability toalign overlapping areas of point clouds –without the use of targets

Deliverables - TruView

Leica Truview

Software modules provide point cloudusers with the widest set of work processusers with the widest set of work processoptions for 3D laser scanning projects inengineering, surveying, construction andrelated applications.

Delivered TruView data enables users toextract real 3D coordinates and accuratelymeasure distances. Markups can easily bemade for effective communication betweenthe client and service provider.

Deliverables – Model Generation

Cyclone-MODEL

This versatile, powerful module enablesprofessionals to use point clouds directly, toprocess them into objects for robust exportinto CAD (and other applications), and tointo CAD (and other applications), and toallow robust import of data from CAD (andother applications). Cyclone-MODEL has theindustry’s largest, most complete andautomated set of tools for accuratelymodeling 3D point clouds as CAD geometryor as meshes for engineering, surveying,construction, architectural and relatedapplications.

Applications

• As-Built Simulations – Equipment clashes and operational Limits

• Deck Logistics

• ROV Layout and Integration

• Component Interface management

• Pipe Design Clashes• Pipe Design Clashes

• Cable Runs

• Training HSE

• BIM (Building Information Modelling)

What’s Next?

Underwater LIDAR sensor

Developed specifically for ultra deep water oiland gas metrology and 3D data collection

Integrated graphical user interface controlsystem

• Programmable scan rate and field of view

• QuickView data visualization capability• QuickView data visualization capability

• Output to standard point cloud and meshformats

ROV integrated – power and communications

• Note the presence and depthof the fins is difficult to capturewith the 2D ROV camera

• Primary identification is theshadows caused by sunlight

• Fins are 20.5 cm apart and17.8cm deep17.8cm deep

• The height of the fins and thedistance between fins wasverified to within 2mm