3D Scanning and Analysis
3D scanning is the technique used to virtually collect geometric features of a physical object using non-contact measurement. The WLCC team has developed capabilities in three dimensional scanning documentation and analysis of an array of objects using structured light scanning, laser scanning and stereo photogrammetry. The team at the WLCC is utilizing this state of the art technology as part of the process to document, conserve, and study not only heritage objects and sites, but other fields and disciplines utilizing 3d scanning, such as; automotive and aerospace engineering.
3d scan of the lantern found in the H.L. Hunley
Left to Right – Color polygonal reconstruction, lens rectification phase, lens analysis.
The primary instrument in our toolbox is the Breuckmann OptoTOP-HE scanner. This device uses structured-light scanning technology which is designed for surface scanning and 3D topography, recording the texture, color, and dimension of the object. Two cameras positioned like eyes give the machine binocular disparity creating depth perception. It offers highly accurate measurements of surfaces, designed for documentation, study, analysis and reconstruction of an object or a site.
The process that the virtual reconstruction/metrology team at WLCC uses is broken into 3 categories:
3D Scanning: Capturing 3D data from an existing object using a white light scanner (Close Range Scanning, Large/Small Object Scanning)
Digital Modeling: Replicate and computerize physical objects (Polygonal Models, NURBS, all files can be exported to suit the end users 3D visualization platform)
Inspection/Analysis: Using advanced measurement techniques, scanned objects can be analyzed in a number of ways (3D Scan to Original Model Inspection, Scanned/Digitized Object to 2D Drawing, or Scanned/Digitized Object to Scanned/Digitized Object)
Click on the images below to enlarge.