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18 Νοε 2013 (πριν από 3 χρόνια και 4 μήνες)

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Gene V. Roe, Ph.D., P.E., PLS

Managing Editor

LiDAR News

NCHRP Geospatial Synthesis Project


Use of Advanced Geospatial Data, Tools,
Technologies, and Information in DOT


Projects



Social media


international exposure



TRB Report 446
http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_s
yn_446.pdf


NCHRP 15
-
44


Guidelines for the Use


of Mobile LIDAR in Transportation
Applications

MPN Components, Inc.

Persi Consulting

The Team


Dr. Michael Olsen (OSU), PI


Dr. Gene Roe (MPN Components)


Dr. Craig Glennie (U of Houston), Co
-
PI


Dr
. Fred
Persi

(
Persi

Consulting)


Marcus Reedy (DEA)


Project officially began September
2011
-

Completed
December 2012

The Timeline


Dr. David Hurwitz (OSU)


Keith Williams (OSU)


Halston

Tuss

(OSU)


Dr. Mike
Knodler

(Innovative Data)


Anthony
Squellati

(
DEA)

Transportation Asset Lifecycle

Presentation Overview


Project Objectives and Motivation


Establish Baseline


Management Considerations


Applications


Level of Detail


Decision Flow Chart


Benefit
\
Cost


Implementation Plan


Technical Considerations


Factors Affecting Accuracy


Data Management


Deliverables and Documentation


Project Objectives & Motivation


Appropriate, intelligent
mobile LIDAR
use



Cost
effective adoption of mobile
LIDAR



Common
basis for communication between data
providers and
users



An
easy
-
to
-
understand management
-
level
approach, with guidance on quality management
and specification of final deliverables


Objectives & Motivation


Cont’d.


Adequate metadata and methods documentation



Data management, storage, persistence and
compatibility to ensure long term viability of
captured datasets.



Mobile LIDAR expertise not expected, but…



Technology agnostic, yet relevant to existing COTS



Mobile LiDAR Guidelines
-

eLearning Extension


TRB Report 748
-
http://www.trb.org/Main/Blurbs/169111.aspx


Website


see preview (maybe)


User Forum, Wiki, eLearning Modules and more


Webinars


3


The Guidelines, Management, Technical


Online Courses


5 modules


Overview, Tech/Apps, Procurement, Data
Management, Quality Management

Where Would We Be Without
Standards?

E 57.04 Scope


Data Interoperability



To develop and promulgate open, standard
data exchange mechanisms for 3D imaging
system
-

derived data in order to promote its
widest possible use.


12

ASTM E57 Data Exchange Format


ASTM E2807
-
11 Standard Specification for 3D Imaging Data Exchange


Not a working format


All major vendors are supporting


Extendable


Reference implementation is available


Goals


Cross
-
platform


Open source

http://www.libe57.org


Foundation API


Comprehensive


Simple API


Easy to use, designed for
common

use cases


LandXML and TransXML


Data formats, not models


LandXML is being moved to OGC; flavors


TransXML


NCHRP 20


64 (2006)


XML Schemas for Exchange of Transportation Data
developed a set of Extensible Markup Language
(XML) schema for transportation applications in a
framework called TransXML


www.transxml.org


Master Vision


An Integrated


Built Environment Data Model


Scale
-

from the globe to your desk


Not trivial


transformative change


Many components including


land, water, utilities,


buildings , transportation


3D of course


CityGML, LandXML


building blocks


Think BIG
-

Google



TDM


Transportation Data Model


Focus on the transportation component


Fertile ground


CAD and GIS being used to
represent the same assets


Borrow from BIM





changed the world


Integrated CAD


with database


Lifecycle approach

Benefits of a Data Model


Communication

and
precision

are the two key
benefits that make a data model important to
applications that use and exchange data.


A data model is the medium which project team
members from different backgrounds and with
different levels of experience can communicate
with one another.


Precision means that the terms and rules on a
data model can be interpreted only one way and
are not ambiguous.

Centralized Spatial Data Management

Once in a Generation Opportunity


Transitioning from 2D to 3D graphics world


From linear referencing to Lat/Long (GPS)


10 year process


just in third year


Maximize ROI


Utah DOT Asset Management
Program (Stan Burns)


BIG Idea


change the world


Transformative change


status quo is not
working


FHWA Every Day Counts


Utah DOT


“Good Roads Cost Less”


Recently mapped the entire state


6,000 +
center lane miles


Asset management primarily, but multiple groups
supported effort


Safety, maintenance and preservation


Mobile LiDAR, video, laser road imaging, etc.


Huge data management challenge


UPLAN


Public
planning platform
-

http://uplan.maps.arcgis.com/home/




A Path Forward


Complex, painful, but rewarding


Technical part is easy


it’s the


will to change that is extremely hard


TRB funded project to develop the
transportation agency data model


Tie into MAP
-
21 and Every Day Counts (FHWA)


Could be tied to revenue generating model