Laser scans used in the reconstruction of Notre Dame
Mar 24, 2020 15:00:35 GMT
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Post by ray on Mar 24, 2020 15:00:35 GMT
I guess that most of us still remember the terrible scenes from the French capital when the Notre Dame Cathedral was destroyed by fire on April 15, 2019. Today, almost a year after the fire, bricks continue to fall from the arches of the church, which is still at risk of collapsing.
But there is hope. Notre Dame was documented from inside and outside in millimeter-precise laser scans. Architecture historian Andrew Tallon, who died in 2018, scanned the cathedral in 2010 from 50 different perspectives, using a Leica ScanStation C10. His objective was to investigate in the scans the architectural structures, structural engineering calculations and the exact procedures used by the architects. In the five-day field campaign, more than a billion data points were aggregated: The basis for a precise 3D model of the intact church. Tallon linked the laser measurements with reference measuring points and photographs of the scanned areas. His scans produced a realistic, color-accurate basis for the reconstruction of the burned down cathedral. In addition to Notre Dame, the scientist also created digital 3D models of various Gothic buildings – always looking for the secrets of their building history, construction procedures; and any deformation and settlement movement that the architects had to deal with during the decades-long construction phases.
But there is hope. Notre Dame was documented from inside and outside in millimeter-precise laser scans. Architecture historian Andrew Tallon, who died in 2018, scanned the cathedral in 2010 from 50 different perspectives, using a Leica ScanStation C10. His objective was to investigate in the scans the architectural structures, structural engineering calculations and the exact procedures used by the architects. In the five-day field campaign, more than a billion data points were aggregated: The basis for a precise 3D model of the intact church. Tallon linked the laser measurements with reference measuring points and photographs of the scanned areas. His scans produced a realistic, color-accurate basis for the reconstruction of the burned down cathedral. In addition to Notre Dame, the scientist also created digital 3D models of various Gothic buildings – always looking for the secrets of their building history, construction procedures; and any deformation and settlement movement that the architects had to deal with during the decades-long construction phases.
