create program: technology and · pdf file2 topics • lidar technology • mapping...

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CREATE Program:Technology and Mapping

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Topics

• LIDAR Technology• Mapping Products• Uses of LIDAR Technology and Mapping

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CREATE Program

ProjectTeam

• HNTB– Project Manager– Data Management – Ground Control– Survey– Right-of-way boundaries– Data Conversion– QA/QC

• John Chance Land Surveys– Data Acquisition– Orthophotography

• Optram– Data Extraction

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LIDAR Technology

•Light Intensity Detection And Ranging

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LIDAR Technology

• Cost-25% of cost of traditional surveying methods• Speed – All Projects and Corridors “flown” and

initial projects complete within a year• Cutting Edge – LIDAR Accuracy and Density• “Extras”

– Integration of GIS and Engineering Systems– Aerial Photos and Videos

• Raw LIDAR available for future extraction• Mapping products are more accurate, timely and

cost-effective than comparable photogrammetricprocedures.

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LIDAR Technology

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LIDAR Mapping Process

• Flight Planning• Data Acquisition• Data Extraction• Ground Control• Quality Assurance

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Flight Planning

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Flight Planning

• CREATE Program – most extensive area mapped using LIDAR

• Coordination • Flight lines• Develop Best Practices• ‘War room’ to debrief and plan for the next day

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Data Extraction

• Extraction with Flip 7 Software• Millions of data points

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Data Extraction

• Flip 7 - 3D view with raw LIDAR data

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Data Extraction

• Width of LIDAR swath is determined by height of helicopter

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Data Extraction - Shapefile

• Shapefiles are extracted for use with ESRI’s ArcGIS software

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Data Extraction - Shapefile

• Planimetric data overlaid aerial imagery

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Data Extraction - Shapefile

• Property boundaries are digitized from different sources

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Data Conversion

• Shapefiles are converted to Microstation /J (v7) using FME

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Data Conversion

• Microstation /J (v7) IDOT CADD Compliant Drawing– Every feature is mapped to a specific level/color/linestyle

according to standards established by IDOT

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Track Geometry

• Track Geometry

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Mosaic Images

• Mosaic Images created from photos taken every second during flight– Produced at ¼-foot pixel resolution

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Surface Model

CULVERT

RETAINING WALL

• Accurate for Phase 1/Preliminary Engineering

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Contours

• Contours are created from the Surface Model

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Final Deliverables

•LIDAR Data•Video•Digital Photos•Orthophoto Mosaics•Shapefiles (GIS)•CAD Files (ENGINEERING)•Track Geometry•Ground Control•Metadata (HTML, XML)

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Using LIDAR and

Mapping

•Security Assessment– Determine areas of risk

•Feature Extraction– Planimetric Data– Location of features

•Planning– Mapping for future expansion plans– Infrastructure

•Easily integrate other spatial sources•Impact Analysis

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Visualization

• Allows for analysis

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Questions