On Jäger’s suggestion, Saraceno focused on the web of a black widow spider ( Latrodectus mactans (Fabricius, 1775)) – chosen because of the relative availability of this spider, and also for the large, complex 3D web that it weaves.Įarly efforts to create a 3D scan of this web using existing scanning methods proved unsuccessful – as the unique properties of spider silk (the fineness and reflective qualities of the threads) made it unsuitable for capture by conventional approaches. The setup also proposed an optimized automated capture system, and improved image processing and image-to-line algorithms.įrom this initial question, Saraceno began a conversation with arachnologist Peter Jäger (Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, Germany) to explore the possibility of creating a 3D scan of a natural spider web, and using these data to reconstruct a large-scale model of the web for an art exhibition. In this setup, a green sheet laser (532 nm) is used to illuminate 0.5mm slices of a 3D spider web housed in an open carbon Spider Web Frame. The most recent iteration of the Spider Web Scanner proposes a more automated setup of the original method, and was developed in collaboration with MIT’s Laboratory for Atomistic and Molecular Mechanics, led by Markus Buehler. 2D images (x, y coordinates) are then processed to generate a 3D data model of the scanned web, via a Spider Web Digitization process, which can also involve manual reconstruction of dense and complex sections of the web. A sliding sheet laser (original setup: red laser, 650 nm) is then used to illuminate vertical slices of the 3D spider web, and 1-2 high-resolution camera(s) used to capture stereoscopic images of illuminated web sections. Spider webs to be scanned are first built by the spiders in a carbon Spider Web Frame structure designed by Tomás Saraceno, with advice from arachnologists Peter Jäger and Samuel Zschokke. The Spider Web Scan is a laser-supported tomographic method created by Tomás Saraceno in collaboration with the Photogrammetric Institute, Technische Universität Darmstadt.
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