Four years ago, an art historian used lasers to digitally map Notre Dame Cathedral. His work could help save it
The Notre Dame Cathedral has been repeatedly modified over almost seven centuries, making the architectural history of the building difficult to follow. But through 3D laser scanning, Tallon unveiled the builders' decisions and previously unknown characteristics of the majestic structure. For example, his scans showed that theRestoration will take years, but Tallon's scan data will be invaluable in the process.
The biggest part of the reconstruction will be the cathedral's roof, much of which was destroyed in the fire."Scan data ... will help them recreate measurements for beams and the overall structure," said Krupali Uplekar Krusche, who leads a team at Notre Dame University that uses 3D scanning to document historic monuments.
The level of detail -- which is accurate up to a couple millimeters -- will prove handy when it comes to restoring the cathedral's spire, which was intricately made, Krusche said.
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