About Amerisurv| Contact    
Magazine | Newsletter    
Flickr Photos | Advertise    
HomeNewsNewsletterAmerisurv DirectoryJobsStoreAuthorsHistoryArchivesBlogVideosEvents
 
advertisement


Subscriptions
Sponsored By

Software Reviews
Continuing Series
     RTN
An RTN expert provides everything you need to know about network-corrected real-time GNSS observations.
Click Here to begin the series,
or view the Article PDF's Here
76-PageFlip Compilation
of the entire series
Test Yourself

Got Answers?
Test your knowledge with NCEES-level questions.
  Start HERE
Meet the Authors
Check out our fine lineup of writers. Each an expert in his or her field.
Wow Factor
Sponsored By


Product Reviews
Partner Sites

machinecontrolonline 


lbszone.com

GISuser.com

GeoJobs.biz

GeoLearn

 

Spatial Media LLC properties

Associates

ASPRS

newsnow 

Home arrow Archives   The American Surveyor     

Digital Heritage: Data Density for Cultural Heritage Print E-mail
Written by Justin Barton   
Saturday, 04 January 2014

A 288Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE

In October, the non-profit CyArk launched its "500 Challenge", a global initiative to use LiDAR and other advanced 3D imaging technologies to digitally preserve 500 cultural heritage sites within the next five years. This initiative is driven by the need to document our collective built human history before it is lost permanently to climate change, war, terrorism, arson, urban sprawl, natural disasters, and other threats. As part of our Challenge to the world and our global network of partners, we are making a call for donated data from service providers who have previously documented cultural heritage sites with reality capture technologies. We have even established a Data Donation Partner Program to accompany this call for data.

As a commercial firm you might be wondering, "What type and/or quality of data?" This is the most common question we receive from partners conducting field work for us, or partners who wish to donate heritage data previously collected. Heritage sites can be drastically different from typical terrestrial LiDAR applications like forensics, AEC, and plant work because heritage managers have very different needs from the data than typical commercial work. As an organization that has spent 10 years specializing in documentation of cultural heritage sites, we have refined our methods, and we have worked closely with heritage managers to understand their unique needs. I, myself, have an archaeology background as well as eight years of laser scanning experience, bridging the gap between scanning and heritage.

Therefore, I'd like to offer one key, basic guideline to service providers looking to partner with CyArk in either the data donation program or the execution of site documentation projects--or just for those who have been pondering branching out their services to include the heritage market. It is necessary to understand that site conservation is about the details. Conservators need to see the details. "Where is that small crack? Where are those broken, fractured bricks? Where is that centuries-old original fragment of painted plaster?" So, resolution is key! Consider that archaeologists spend vast amounts of time with plumb bobs and planning frames, drawing every stone, every artifact fragment, of their excavation or site. Yes, LiDAR technology can map faster and remove human error inherent in these traditional methods, but mapping too quickly and compromising resolution can render the data useless to the researcher or conservator. For many commercial applications, basic geometry is all that is needed to produce the necessary models to predict clashes, find corners, measure sag, prefabricate replacement pipes, etc. In these applications, for example, every brick may not be needed as long as the wall plane is known. And this differs from the concerns of the heritage managers. Another great example for comparison might be a traditional HABS (Historic American Building Survey) drawing. HABS drawings are truly works of art with architectural furnishings "exploded" in complex axonometric views and lengthy descriptions where the architect may even verbosely describe the material's texture, feel and color. Conservators and historians need and want to see the details, and so high-density data (think sub-centimeter) is necessary for good heritage work.

Justin Barton is an archaeologist with a specialization in terrestrial LiDAR applications for cultural heritage conservation and management.

A 288Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE

 
< Prev   Next >

Marc Cheves, PS 
Editorial: A Great Year to be a Surveyor
Some magazines have what are called "theme" issues. That is, most of the content is focused on one particular subject. In my 22+ years of survey magazine publishing, my philosophy has always been to have a little bit of everything in each issue, thereby eliminating the possibility that ....
Read the Article
Jason E. Foose, PS 
Decided Guidance: Case Examinations: Halverson v. Deerwood Village
Whew! We really beat the snot out of Bryant v. Blevins and practical locations. Well this month we're back on new case that hit the Minnesota Supreme Court's docket in 1982. We've got the familiar gymnastics of jurisprudence featuring an extraordinary array of flying rope stretchers ...
Read the Article
Michel Philips 
Extreme Environment Surveying
A Franco-Chilean team of cave divers used the Nautiz X8 rugged handheld for marine cave surveying, gathering data to classify the inaccessible northern half of Madre de Dios for UNESCO World Heritage. The team of cave divers used the Nautiz X8 ....
Read the Article
Erik Dahlberg 
The Original Green Engineers
Sometimes, it's best just to leave things as you found them. That's the lesson shared by Dr. Richard Miksad and his students at the University of Virginia. As a result of studies covering nearly a decade, Miksad's teams have developed detailed ....
Read the Article
Dave Lindell, PS 
Test Yourself 49: No Dimensions
In square A-C-D-B with side S, C-E is tangent to the semicircle Q1 with diameter B-D. Q2 is the inscribed circle of A-C-E. The tangent to Q1 and Q2 meets the sides of the square at F and H and intersects C-E at t G. Q3 is the inscribed circle of C-G-H. What is the ratio of the radii of circles ....
Read the Article
Jerry Penry, PS 
Discovery on Grizzly Peak
When First Lieutenant Montgomery M. Macomb arrived in Carson City, Nevada, from Washington D.C., on July 28, 1878, his assigned survey crew from the 4th Artillery was waiting and ready for the new field season. At age 25, Macomb was the leader ....
Read the Article
Wendy Lathrop, PS, CFM 
Vantage Point: Fighting City Hall Over Land
Once upon a time (1989 to be exact) in a place not so far away from where I live, a man (Francis Galdo) bought a home across the street from a vacant parcel owned by the City of Philadelphia. That parcel, along with others, had been acquired by condemnation back in 1974 subsequent to a 1956 ....
Read the Article
Patrick C. Garner, PS 
Book Review: Boundary Retracement: Processes and Procedures
When I was in my mid-twenties and learning the honorable profession of land surveying, I was lucky to be guided by a mentor who would grab a book off his office shelf and say, "Every surveyor should have a copy of this!" The first example he waved at me was Davis, Foote and Kelly's Surveying ....
Read the Article

deliciousrssnewsletterlinkedinfacebooktwitter

Amerisurv Exclusive Online-only Article ticker
Featured Amerisurv Events
List Your Event Here
please
contact Amerisurv


Google
 
AMERISURV TOP NEWS

Trimble Intros
TSC7 Controller

GOT NEWS? Send To
press [at] amerisurv.com
Online Internet Content

Sponsor


News Feeds

 
Subscribe to Amerisurv news & updates via RSS or get our Feedburn
xml feed

Need Help? See this RSS Tutorial

Historic Maps
Careers

post a job
Reach our audience of Professional land surveyors and Geo-Technology professionals with your GeoJobs career ad. Feel free to contact us if you need additional information.

 

Social Bookmarks

Amerisurv on Facebook 

Amerisurv LinkedIn Group 

Amerisurv Flickr Photos 

Amerisurv videos on YouTube 

twitter

 




The American Surveyor © All rights reserved / Privacy Statement
Spatial Media LLC
7820B Wormans Mill Road, #236
Frederick MD 21701
301-620-0784
301-695-1538 - fax