@article {14819,
	title = {A search engine for 3D models},
	journal = {ACM Trans. Graph.},
	volume = {22},
	year = {2003},
	month = {2003/01//},
	pages = {83 - 105},
	abstract = {As the number of 3D models available on the Web grows, there is an increasing need for a search engine to help people find them. Unfortunately, traditional text-based search techniques are not always effective for 3D data. In this article, we investigate new shape-based search methods. The key challenges are to develop query methods simple enough for novice users and matching algorithms robust enough to work for arbitrary polygonal models. We present a Web-based search engine system that supports queries based on 3D sketches, 2D sketches, 3D models, and/or text keywords. For the shape-based queries, we have developed a new matching algorithm that uses spherical harmonics to compute discriminating similarity measures without requiring repair of model degeneracies or alignment of orientations. It provides 46 to 245\% better performance than related shape-matching methods during precision--recall experiments, and it is fast enough to return query results from a repository of 20,000 models in under a second. The net result is a growing interactive index of 3D models available on the Web (i.e., a Google for 3D models).},
	keywords = {Search engine, shape matching, shape representation, shape retrieval},
	isbn = {0730-0301},
	doi = {10.1145/588272.588279},
	url = {http://doi.acm.org/10.1145/588272.588279},
	author = {Funkhouser,Thomas and Min,Patrick and Kazhdan,Michael and Chen,Joyce and Halderman,Alex and Dobkin,David and Jacobs, David W.}
}
