hawaii pacific gis conference 2012: lidar for intrastructure and terrian mapping - maximizing the...

Maximizing the Benefits of LiDAR

with GIS

Presented by Steve Snow

Esri Industry Specialist

Agenda

• What is LiDAR

• Different types of LiDAR systems

• Challenges to working with LiDAR data

• How GIS organizations work with LiDAR

• Example GIS-LiDAR applications

• A New Vision Is Emerging

• Summary/Questions

LiDAR – Light Detection And Ranging

Optical remote sensing technology that measures the

distance from the sensor to a target

LAS: Binary file format for LiDAR data storage

developed by the ASPRS in conjunction with private and

government stakeholders

Types of LiDAR

• Airborne

- Captured from aircraft

• Terrestrial and Mobile

- Captured from the surface

LiDAR Technology

LiDAR Data

Very rich, but contains a lot of data not required for many applications

First Return

SecondReturn

ThirdReturn

Last Return

LiDAR Data

Very rich, but contains a lot of data not required for many applications

First Return

SecondReturn

ThirdReturn

Last Return

DSM

LiDAR Data

Very rich, but contains a lot of data not required for many applications

First Return

SecondReturn

ThirdReturn

Last Return

DSM

DTM

Challenges of Working with LiDAR Data

• Huge data volumes

• Storing & serving

• Integration with other spatial data

• How to manage?

• How to access?

• How to analyze?

Traditional Workflows

• Project based:

- Collection – Project based

- Analysis – For specific project

Traditional Workflows

• Project based:

- Collection – Project based

- Analysis – For specific project

- Archive data

Traditional Workflows

• Project based:

- Collection – Project based

- Analysis – For specific project

- Archive data

- Move on to next project

Traditional Workflows

• Project based:

- Collection – Project based

- Analysis – For specific project

- Archive data

- Move on to next project

• Data not accessible to

- Multiple applications

- Multiple users

• Value is lost

?

The Enterprise GIS Lidar Workflow

Collect

and Integrate

Manage

Visualize and

Analyze

Share

LAS Dataset – Visualize and Analyze

Points

LAS Dataset – Visualize and Analyze

Surface

LAS Dataset – Manage

Interactive Editing-manual or batch reclassification of raw LAS files

Data courtesy Merrick & Co.

LAS Dataset – Visualize and Analyze

Mosaic Dataset

Optimum Model for Image Data Management

• Manage

• Multiple projects as single dataset

• Metadata

• Visualize

• On the fly representation as surface or point cloud

• View as 2D or 3D

• Share

• As a single dataset

• As Image Service

• WMS/WCS

Sharing LiDAR data

• Share via ArcGIS Server

• An Image Service

- Access

- Discover

- Download

• A map service

GIS LiDAR Data Applications

Forestry Tasmania

Lidar provided quality improvements and cost

savings

ArcGIS Image Extension provided the tool to

access large amounts of lidar data seamlessly

and quickly.

Lidar was integrated into harvest planning,

inventory assessment and planning analysis

Lidar is an excellent means for characterizing

the forest resource as a basis for forest

management

Cost saving found areas such as:

haul road location

timber inventory

Result of decrease in measurement and planning

effort

Estimated recoup acquisition and processing

costs in 5 years

See the forest AND the trees

Natural Resource Management - Forestry

Slope Map

Canopy Height Map

Canopy Cover & Flow Direction Map

• True 3D Data

NADIR or Down Looking Perspective

Energy – Transmission Lines

•View,

measure

or

analyze

from any

location

Profile Perspective

Energy – Transmission Lines

• Great detail

• Highly accurate

Data courtesy of Optech, Inc.

Energy – Transmission Lines

Emergency management

• North Carolina Geospatial & Technology Information

Management Office (GTM)

• Tsunami Indundation modeling-Oregon State

(DOGAMI)

Statewide Building Footprints

• 100% Statewide Coverage

• 5.5 Million Building Footprints Collected and Quality Reviewed

Supporting Hurricane Preparations

Building Footprints and Finished Floor Elevations

100YR Flood Elevation = 13 ft.

FFE = 5.2 ft.

Damage assesments

Emergency management

Potential tsunami inundation: Bandon, Oregon

Data courtesy of DOGAMI

Lidar Data dissemination

http://www.oregongeology.org/dogamilidarviewer/

View and download your source data for further uses

Empowering the GIS Professional . . .

. . . And the Broader Community

A New Vision Is Emerging for LiDAR/Imagery with GIS

Easier, Accessible and Collaborative

Enabled By

• Cloud Architecture

• Web Services

• Information Integration

• Crowd Sourcing

• Open Data Sharing

• On the fly processing

• One environment

• 2D/3D visualization

• Spatial Data Infrastructure

. . . . And Software

Learn more

Workshops following conference

Two Free 1 day hands on workshops

• Lidar at ArcGIS 10.1

- Thursday March 8, 8:00AM – 4:30PM

- or

- Friday March 9, 8:00AM – 4:30PM

• Seating is limited. Please contact Connie Clinton at

808-947-0993 x15635 / cclinton@esri.com

• Location: Esri training room 1357 Kapiolani Blvd

Suite 1100, Honolulu, HI 96816

Questions

Thank you!

Ron Behrendt

behron@centurytel.net

1.406.250.1550

Steve Snow

Esri Industry Specialist

Twitter @lidar_geek

ssnow@esri.com

1-909-793-2853 x 3769

http://www.esri.com/industries/map-chart-dataproduction/lidar/