<http://panocea.us/true-lidar-stories/>

This is a four-part video series that has been prepared for the 
University of Maine and its Surveying Engineering Technology Program to 
help illustrate the day-to-day applications of LiDAR in land surveying.

They have also been prepared with the hope that they may be 
informational for practicing surveyors and other spatial data providers.




	These videos have been produced in HD and you'll get the best picture 
by adjusting the YouTube settings (little gear icon that appears in the 
lower right corner of each video frame after you've started the video) 
to HD, then pause it a second or two to buffer before going full screen 
(little square icon).

HD Non-Streaming Alternatives:
To download; Right click over link, Save As...
Part One 
<http://panocea.us/True-LiDAR-Stories/True%20LiDAR%20Stories%20-%20Part%20One.f4v> 
(513 MB)
Part Two 
<http://panocea.us/True-LiDAR-Stories/True%20LiDAR%20Stories%20-%20Part%20Two.f4v> 
(460 MB)
Part Three 
<http://panocea.us/True-LiDAR-Stories/True%20LiDAR%20Stories%20-%20Part%2003.f4v> 
(991 MB)
Part Four 
<http://panocea.us/True-LiDAR-Stories/True%20LiDAR%20Stories%20-%20Part%20Four.f4v> 
(857 MB)


------------------------------------------------------------------------


	*True LiDAR Stories - Part One
A Setback Study*
Production date: February 2014
Link: True LiDAR Stories - Part One - YouTube <http://youtu.be/Npcagcw-j0Y>

In Part One we look at a typical setback study utilizing the Maine 
Department of Environmental Protection's current criteria of Highest 
Annual Tide as the basis from which we measure. The building setback in 
this example is in a town where a more stringent setback requirement of 
100' has been promulgated and is in contrast with the State of Maine's 
minimum building setback of 75' from salt water bodies
------------------------------------------------------------------------



	*True LiDAR Stories - Part Two
Study of A Setback*
Production date: February 2014
Link: True LiDAR Stories - Part Two - YouTube <http://youtu.be/XODiBfuGdgc>

In Part One (True LiDAR Stories - Part One - YouTube 
<http://youtu.be/Npcagcw-j0Y>) we looked at a typical setback study 
utilizing the Maine Department of Environmental Protection's current 
criteria of Highest *Annual* Tide as the basis from which we measure. In 
this part, utilizing LiDAR, we will take a closer examination of what 
inconsistencies are introduced by not using the Highest *Astronomic* 
Tide for the current National Tidal Datum Epoch and the impacts that 
could be seen when applied to building setbacks. In this example, 
applying the State of Maine's minimum building setback of 75' from salt 
water bodies, we see what I've referred to as /Dave's Magic Shed/, a 
fictitious 10' x 12' structure which in one year lies completely upland 
of the 75' setback (Highest *Annual* Tide) and in another year, 
completely seaward.

*Part Two Resources*:
VDatum (awesome vertical and horizontal transformation program, FREE): 
VDatum: NOAA/NOS/Vertical Datum Transformation <http://vdatum.noaa.gov/>
Maine DEP Shoreland Zoning: Shoreland Zoning, Bur. of Land & Water 
Quality, Maine Department of Environmental Protection 
<http://www.maine.gov/dep/land/slz/index.html>
MDEP's 2013 HAT Table (currently no table for 2014): 
http://www.maine.gov/dep/land/slz/predictions.pdf
Tidal Datums: Tidal Datums - NOAA Tides & Currents 
<http://tidesandcurrents.noaa.gov/datum_options.html>
Tide Predictions: Tide Predictions - NOAA Tides & Currents 
<http://tidesandcurrents.noaa.gov/tide_predictions.html>
XTide (awesome Unix-based program, FREE): XTide: Harmonic tide clock and 
tide predictor <http://www.flaterco.com/xtide/>
------------------------------------------------------------------------


	*True LiDAR Stories - Part Three
That's Classified*
Production date: February 2014
Link: True LiDAR Stories - Part Three - YouTube 
<http://youtu.be/cFDuCdF_nYk><http://youtu.be/cFDuCdF_nYk>

In Part One (True LiDAR Stories - Part One - YouTube 
<http://youtu.be/Npcagcw-j0Y>) and Part Two (True LiDAR Stories - Part 
Two - YouTube <http://youtu.be/XODiBfuGdgc>) we looked at setback issues 
predicated on LiDAR-derrived contours. In this part, we will take a 
closer examination as to which specific LiDAR points are used for 
contour generation and the shortcomings of the classification process 
that users of LiDAR data need to be aware of and when it is appropriate 
to employ reclassification algorithms. In this example, we see what I've 
referred to as a hole in the ground, an area that is clearly on open 
lawn yet devoid of legitimate bare ground returns and which instead have 
been classified as UNCLASSIFIED. Reclassification of the UNCLASSIFIED 
pulses allows us to fill in that hole and thereby generate contours more 
closely representative of the truth on the ground.

*Part Three Resources*:
USGS Center for LIDAR Information: CLICK <http://lidar.cr.usgs.gov/>
USGS Base Specifications used in 2010-2011 deliverables: 
http://lidar.cr.usgs.gov/USGS-NGP%20...%28ILMF%29.pdf 
<http://lidar.cr.usgs.gov/USGS-NGP%20Lidar%20Guidelines%20and%20Base%20Specification%20v13%28ILMF%29.pdf>
MCC-LIDAR is a command line application (FREE) for processing LiDAR data 
in forested environments. It classifies data points as ground or 
non-ground using the Multiscale Curvature Classification algorithm 
developed by Jeffrey S. Evans and Andrew T. Hudak.
MCC-LIDAR's Home page: MCC-LIDAR 
<http://sourceforge.net/apps/trac/mcclidar/>
MCC-LIDAR's How to Run MCC-LIDAR: HowToRun ? MCC-LIDAR 
<http://sourceforge.net/apps/trac/mcclidar/wiki/HowToRun>
------------------------------------------------------------------------


	*True LiDAR Stories - Part Four
Epilog*
Production date: February 2014
Link: True LiDAR Stories - Part Four - YouTube 
<http://youtu.be/T_m2TwGzy4o>

In this last part, we discuss sources of LiDAR data, where you may 
obtain it and other geospatial products as well as taking a peek at its 
present coverage across the State of Maine. Lastly, is the reminder to 
always vet your data; both that data which is given to you as well as 
the data that you produce.

*Part Four Resources*:
Maine Office of GIS Home page: Maine Office of GIS 
<http://www.maine.gov/megis>
Maine Office Catalog page: Maine Office of GIS 
<http://www.maine.gov/megis/catalog/>
USGS Center for LIDAR Information: CLICK <http://lidar.cr.usgs.gov/>
USGS's EarthExplorer: EarthExplorer <http://earthexplorer.usgs.gov/>
USGS Global Visualization Viewer: USGS Global Visualization Viewer 
<http://glovis.usgs.gov/>


-- 


V. Kelly Bellis, PLS 2099 - 17 Union Street - Ellsworth, ME 04605
[log in to unmask] <mailto:[log in to unmask]> - 207.667.6912 - 
Horizon Surveying Co.

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