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rcmaehl

System Restore - Laser scans from 2015 may assist with restoration of Notre Dame

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Posted · Original PosterOP

Sources:
Geek
Forbes

 

Summary:
Detailed scans from 2015 (down to 0.2"), from the late Andrew Talon, could help with the eventual detailed restoration of Notre Dame

 

Media:

 

Quotes/Excerpts:

Quote

As the world woke the day after the tragic fire at Notre Dame Cathedral in Paris, France, determination sunk in to rebuild. French billionaires and companies have continued to pledge donations to rebuild and restore the Notre Dame Cathedral, currently topping $670 million. While the desire and financial support to rebuild Notre Dame will likely not be a hurdle, there remains the difficult task of accurately restoring the cathedral. The whole world owes great gratitude to the late art historian and Vassar College professor, Andrew Tallon. Tallon began exploring the use of laser scanning. In 2015 Tallon meticulously mapped Notre Dame Cathedral using laser scanners mounted on a tripod. These devices scan the surrounding three-dimensional area sending out laser beam sweeps. The device then measured the distance between every point the laser hits and the device itself...with an accuracy of 5 millimeters. Tallon conducted these surveys from 50 locations throughout. He collected over 1 billion points of data. On top of that, Tallon took spherical panoramic photographs from the exact spot as the laser scanner. He then tied in each laser point collected to a pixel color from the photograph. What this produced is truly exquisite. A photorealistic 3-D replication of Notre Dame .

 

My Thoughts:

As much as this is good news, I feel at least some sadness Andrew is not around to see the results of his work put to good use. Regardless, with todays masses of information, images, pictures, and especially Andrew's detailed scans of the building. I'm sure the restoration of Notre Dame will go without a hitch. It's amazing what we can achieve with today's technology.


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If they use the scans from Assassin's creed Unity like I've seen posted everywhere, the spire would be inverted, part of the roof will be "ripped" out to the horizon and glitching around every few seconds.

 

if they don't make a stained glass window of this on the rebuild, what is even the point?

 

image.png.230b5e6523b3afd8299473d151f28e82.png

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Cool stuff, I worked with this sort of point clouds for my bachelor's thesis.


<Make me a sandwich.> <No! Make it yourself!> <Sudo make me a sandwich.> <FINE.> What is scaling and how does it work? Asus PB287Q unboxing! Console alternatives :D Watch Netflix with Kodi on Arch Linux CoC F.A.Q Beginner's Guide To LTT (by iamdarkyoshi)

Sauron'stm Product Scores:

Spoiler

Just a list of my personal scores for some products, in no particular order, with brief comments. I just got the idea to do them so they aren't many for now :)

Don't take these as complete reviews or final truths - they are just my personal impressions on products I may or may not have used, summed up in a couple of sentences and a rough score. All scores take into account the unit's price and time of release, heavily so, therefore don't expect absolute performance to be reflected here.

 

-Lenovo Thinkpad X220 - [8/10]

Spoiler

A durable and reliable machine that is relatively lightweight, has all the hardware it needs to never feel sluggish and has a great IPS matte screen. Downsides are mostly due to its age, most notably the screen resolution of 1366x768 and usb 2.0 ports.

 

-Apple Macbook (2015) - [Garbage -/10]

Spoiler

From my perspective, this product has no redeeming factors given its price and the competition. It is underpowered, overpriced, impractical due to its single port and is made redundant even by Apple's own iPad pro line.

 

-OnePlus X - [7/10]

Spoiler

A good phone for the price. It does everything I (and most people) need without being sluggish and has no particularly bad flaws. The lack of recent software updates and relatively barebones feature kit (most notably the lack of 5GHz wifi, biometric sensors and backlight for the capacitive buttons) prevent it from being exceptional.

 

-Microsoft Surface Book 2 - [Garbage - -/10]

Spoiler

Overpriced and rushed, offers nothing notable compared to the competition, doesn't come with an adequate charger despite the premium price. Worse than the Macbook for not even offering the small plus sides of having macOS. Buy a Razer Blade if you want high performance in a (relatively) light package.

 

-Intel Core i7 2600/k - [9/10]

Spoiler

Quite possibly Intel's best product launch ever. It had all the bleeding edge features of the time, it came with a very significant performance improvement over its predecessor and it had a soldered heatspreader, allowing for efficient cooling and great overclocking. Even the "locked" version could be overclocked through the multiplier within (quite reasonable) limits.

 

-Apple iPad Pro - [5/10]

Spoiler

A pretty good product, sunk by its price (plus the extra cost of the physical keyboard and the pencil). Buy it if you don't mind the Apple tax and are looking for a very light office machine with an excellent digitizer. Particularly good for rich students. Bad for cheap tinkerers like myself.

 

 

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This technology is very commonly used nowadays in construction and renovation projects, not exactly an innovation these days. Maybe in 2015 it was still more novel. 

 

II am an architect, and we use laser scanning for renovations of existing "historic" buildings all the time. The cost to get a building scanned, depending on the size, is like $5000-$10,000. Very cheap, considering the overall cost of a project.

 

You get a pointcloud out of it, which can even be in color.

 

The real issue is how they will rebuild: You can never really replace what was lost: the original ceiling, timber structure, spire, etc. You can replicate it, but it will never be the same.

 

 


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2 hours ago, maartendc said:

I am an architect, and we use laser scanning for renovations of existing "historic" buildings all the time. The cost to get a building scanned, depending on the size, is like $5000-$10,000. Very cheap, considering the overall cost of a project.

Well, Notre Dame was probably more challenging to scan accurately than your average building - still, obviously not very expensive in the grand scheme.


<Make me a sandwich.> <No! Make it yourself!> <Sudo make me a sandwich.> <FINE.> What is scaling and how does it work? Asus PB287Q unboxing! Console alternatives :D Watch Netflix with Kodi on Arch Linux CoC F.A.Q Beginner's Guide To LTT (by iamdarkyoshi)

Sauron'stm Product Scores:

Spoiler

Just a list of my personal scores for some products, in no particular order, with brief comments. I just got the idea to do them so they aren't many for now :)

Don't take these as complete reviews or final truths - they are just my personal impressions on products I may or may not have used, summed up in a couple of sentences and a rough score. All scores take into account the unit's price and time of release, heavily so, therefore don't expect absolute performance to be reflected here.

 

-Lenovo Thinkpad X220 - [8/10]

Spoiler

A durable and reliable machine that is relatively lightweight, has all the hardware it needs to never feel sluggish and has a great IPS matte screen. Downsides are mostly due to its age, most notably the screen resolution of 1366x768 and usb 2.0 ports.

 

-Apple Macbook (2015) - [Garbage -/10]

Spoiler

From my perspective, this product has no redeeming factors given its price and the competition. It is underpowered, overpriced, impractical due to its single port and is made redundant even by Apple's own iPad pro line.

 

-OnePlus X - [7/10]

Spoiler

A good phone for the price. It does everything I (and most people) need without being sluggish and has no particularly bad flaws. The lack of recent software updates and relatively barebones feature kit (most notably the lack of 5GHz wifi, biometric sensors and backlight for the capacitive buttons) prevent it from being exceptional.

 

-Microsoft Surface Book 2 - [Garbage - -/10]

Spoiler

Overpriced and rushed, offers nothing notable compared to the competition, doesn't come with an adequate charger despite the premium price. Worse than the Macbook for not even offering the small plus sides of having macOS. Buy a Razer Blade if you want high performance in a (relatively) light package.

 

-Intel Core i7 2600/k - [9/10]

Spoiler

Quite possibly Intel's best product launch ever. It had all the bleeding edge features of the time, it came with a very significant performance improvement over its predecessor and it had a soldered heatspreader, allowing for efficient cooling and great overclocking. Even the "locked" version could be overclocked through the multiplier within (quite reasonable) limits.

 

-Apple iPad Pro - [5/10]

Spoiler

A pretty good product, sunk by its price (plus the extra cost of the physical keyboard and the pencil). Buy it if you don't mind the Apple tax and are looking for a very light office machine with an excellent digitizer. Particularly good for rich students. Bad for cheap tinkerers like myself.

 

 

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2 hours ago, maartendc said:

The real issue is how they will rebuild: You can never really replace what was lost: the original ceiling, timber structure, spire, etc. You can replicate it, but it will never be the same.

probably unavoidable to use modern materials, but probably for the best...? (especially if they're stronger or more resistant against propagating fire)

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9 hours ago, Dogeystyle said:

 

Timesplitters would be a great reference as well

I thought of that exact game and that level when I heard the cathedral was burning.

 

Always wanted to visit it, despite being an Atheist. Lovely building.


Computer's don't make errors. What they do, they do on purpose. By now your name and particulars have been fed into every laptop, desktop, mainframe and supermarket scanner that collectively make up the global information conspiracy, otherwise known as The Beast.

 

You just be careful. Computers have already beaten the Communists at chess. Next thing you know, they'll be beating humans.

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