Fabricating Fabric; Computer-generated Imagery  

Oleh:

[s.n]

Jenis: Article from Bulletin/Magazine
Dalam koleksi: The Economist (http://search.proquest.com/) vol. 400 no. 8746 (Aug. 2011), page 61.
Topik: Computer Based Modeling; Tomography; Research; Fabrics; Three Dimensional Imaging

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Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.67 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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It is possible to use computer-generated imagery (CGI) to make actors look younger, older or wimpier than they actually are, in a surprisingly realistic manner. The reason is that, whereas it is possible to simulate realistically the forces which make virtual skin and fabric hang, bend, flap and stretch, recreating the subtle ways they reflect light has so far proved extremely tricky. The shimmer and sheen of both fabric and skin depend on the geometry of their internal structures--the exact arrangement of threads or protein fibres. This is hard to model accurately. Steve Marschner and his colleagues at Cornell University have, though, come up with a way to get round that problem. Instead of modelling, they are copying. They are using computerised tomography (CT) to analyse the structures of fabrics at high resolution and then plugging the results into CGI. That, allied to the laws of optics and some heavy-duty computer power, seems to do the trick.

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