Semantic description of digital 3D scenes

Bruno Barberi GneccoMarcelo De Paiva GuimarãesRodrigo Damazio

Digital 3D scenes are currently described by sets of polygons, without any features other than those intrinsic to the rendering such as animation, color and texture coordinates. Any other data required for animation, simulation or interaction is informed in separate, and there is no proposal so far in the researched literature for a general solution to these problems. Advanced render engines and other applications separate the data ad hoc, take into consideration characters and Artificial Intelligence, but in a separate fashion. We propose in this article a general, semantic description of digital three-dimensional scenes, where objects are not only a set of polygons, but have intrinsic high-level characteristics. For example, a table is an object with features as its style, its number of legs, the shape of its top etc. Besides these static descriptive characteristics, semantic objects also may have methods describing its possible actions, movement or interactions with one another. We have an ongoing project to specify a file format for semantic scenes and implement a engine that uses it.

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