Preserving historic structure in digital kind has lengthy required practitioners to decide on between protection and determination. A mission at Shijiazhuang Flower Corridor — a conventional Chinese language courtyard home masking roughly 745 sq. meters in Zhejiang province — examined a dual-technology workflow designed to handle each calls for in a single documentation marketing campaign.
The constructing, named for the Dongyang wooden carvings that cowl its beams, brackets, purlins, and eaves friezes, introduced two important challenges.
On the macro stage, the total courtyard required quick, correct spatial mapping throughout a big footprint. On the micro stage, particular person carvings — some with reduction depths measured in millimeters — required a scanner able to resolving fantastic floor geometry in recessed and undercut areas.
Combining SLAM and structured-light seize
To deal with the courtyard structure, groups used the OmniSLAM R8+ cell simultaneous localization and mapping (SLAM) shade 3D laser scanner, which accomplished a full constructing survey in roughly quarter-hour at an angular accuracy of 0.005 levels in leveling and verticality.
For carved floor element, SHINING 3D‘s EinScan Libre wi-fi handheld scanner was utilized in fine-area laser scanning mode. The gadget operates with out an exterior laptop, counting on an onboard NVIDIA processor. In that mode, it delivers accuracy to 0.04 mm with a minimal level spacing of 0.05 mm.
The 2 datasets — large-scene level cloud from the R8+ and high-resolution mesh from the EinScan Libre — had been then merged right into a unified mannequin masking the total constructing all the way down to particular person carving strokes.
The ensuing mannequin is meant to help restoration planning by means of digital simulation, distant educational research of carving strategies and iconography, and public engagement by means of digital actuality experiences.