Skip to content
Search AI Powered

Latest Stories

Late Historian's Intricate 3D Laser Maps Of The Notre-Dame Cathedral Could Be The Key To Rebuilding It

Late Historian's Intricate 3D Laser Maps Of The Notre-Dame Cathedral Could Be The Key To Rebuilding It
Dan Kitwood/Getty Images

Late architectural historian Andrew Tallon left behind a blueprint that could be instrumental in rebuilding Notre Dame cathedral.

Tallon, who died from brain cancer on Nov. 18, 2018, at the age of 49, used laser scans to uncover hidden clues that went into building the medieval structure that was commissioned in 1160 by the bishop of Paris, Maurice de Sully.

The laser scan done in 2010 will be used as a reference to restoring the cathedral to its original magnificence. That is the hope.


A National Geographic report detailed the process involving the incredible technology.

Previously archaic methods used to obtain measurements using tools like strings and pencils, were not only tedious and time-consuming, but they also were not always accurate.

The laser scan is precise. A laser from a scanner mounted on a tripod does a sweep of an interior and measures the distance between the scan and all the surface points without error.

"If you've done your job properly," says Tallon, the scan is "accurate to within five millimeters [.5 centimeter]."


"I had to set up a network of targets, which are just geo-located points in space. You define the density of the scan, the resolution of the scan. In other words, X, Y, Z coordinates in the space you want to acquire and then you let it rip," he explained in this 2015 National Geographic YouTube video.


Laser Scanning Reveals Cathedral's Mysteries | National Geographicwww.youtube.com


He found a way to improve upon the method that rendered the data into a three-dimensional model by knitting the scans together.

With every scan taken from his Leica ScanStation C10, Tallon took a spherical panoramic photograph of the same location and mapped the image onto the laser-generated dots of the scan.

Each dot was represented as a color pixel from the location in the photograph. Tallon gathered nearly one billion points of data from 50 points in and around Notre Dame over the course of five days.



Tallon will leave his stamp on a historical cathedral through his dedicated work.



The Atlantic staff writer Alexis C. Madrigal honored Tallon's legacy in connection to his work on Notre Dame in this beautiful closing paragraph to his article.



Tallon's colleague, Paul Blaer, told The Atlantic he had two thoughts while watching footage of the cathedral go up in flames.

"One thought was that I was kind of relieved that he didn't actually have to see this happen. But on the other hand, he knew it so well and had so much information about how it's constructed, he would have been so helpful in terms of rebuilding it."


Preservationist and architectural historian Lindsay Peterson believes that any drawing or archival documents detailing the construction of Notre Dame will be inaccurate, but the laser scans are fool-proof.

Said Peterson:

"Historic drawings or even modern drawings are only accurate up to a certain degree, Laser scans get you accuracy up to the millimeter."

The generous donations pouring in to help finance the rebuilding efforts is reflective of Paris's love for the cathedral.




Now, we move forward. It will take years, but she will rise again.

More from Trending

Screenshot of Michael Waltz
Fox News

Trump Official Dragged After Suggesting 'Atlantic' Editor 'Hacked' Into Signal Group Chat

Speaking to Fox News personality Laura Ingraham, national security adviser Michael Waltz suggested that Atlantic editor Jeffrey Goldberg hacked his phone to gain access to a Signal chat with high-level Trump administration officials, particularly Defense Secretary Pete Hegseth, discussing military strategy surrounding war strikes in Yemen.

Waltz made this claim even though he had previously acknowledged setting up the Signal group in question, while President Donald Trump suggested that it was one of Waltz’s associates who added Goldberg.

Keep ReadingShow less
Denzel Washington
Ivan Romano/Getty Images

Denzel Washington Sparks Debate After Pushing Back On Being Called A 'Hollywood Actor'

If you ever get a chance to talk to Denzel Washington about his acting craft, be careful how you address him.

Big-time actors Denzel Washington and Jake Gyllenhaal are currently starring in a Broadway rendition of Othello, which is the first Shakespeare play to be produced on Broadway in more than 40 years, alongside other big actors and producers traditionally found in Hollywood-based productions.

Keep ReadingShow less
Pedro Pascal
Jimmy Kimmel Live/YouTube

Pedro Pascal Left Red-Faced After Photo Reveals His Bonkers Morning Coffee Order

There are some things that should be between you and the person you worked with to get it: your medical prescriptions, the number of packages you receive from online shopping, and your coffee order.

Actor Pedro Pascal was recently being interviewed on Jimmy Kimmel Live when the host brought up how a paparazzi had accidentally revealed Pascal's coffee order in an image from last year.

Keep ReadingShow less
Gwyneth Paltrow; Meghan Markle
Stephane Cardinale - Corbis/Corbis via Getty Images; Samir Hussein/WireImage

Gwyneth Paltrow And Meghan Markle Epically Shut Down Rumors That They're Feuding

The newest Hollywood feud is the one in which actor Gwyneth Paltrow and Meghan Markle are at each other's throats after Paltrow mocked Markle's new Netflix show.

The only problem—it apparently never happened.

Keep ReadingShow less
Screenshot of Donald Trump
Newsmax

Trump Slammed After Touting Plan To Financially Compensate Pardoned Jan. 6 Rioters

President Donald Trump is facing criticism after suggesting the creation of a "compensation fund" for individuals who were pardoned after participating in the January 6, 2021, attack on the Capitol.

In one of his first official actions upon returning to office, Trump granted sweeping clemency to nearly 1,600 people charged in connection with the riot. He issued pardons to most defendants and commuted the sentences of 14 members of the Proud Boys and Oath Keepers militia, many of whom had been convicted of seditious conspiracy.

Keep ReadingShow less