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Graph."],"published-print":{"date-parts":[[2023,8]]},"abstract":"<jats:p>\n            This paper describes a method for fast simplification of surface meshes. Whereas past methods focus on visual appearance, our goal is to solve equations on the surface. Hence, rather than approximate the extrinsic geometry, we construct a coarse\n            <jats:italic>intrinsic triangulation<\/jats:italic>\n            of the input domain. In the spirit of the\n            <jats:italic>quadric error metric (QEM)<\/jats:italic>\n            , we perform greedy decimation while agglomerating global information about approximation error. In lieu of extrinsic quadrics, however, we store intrinsic tangent vectors that track how far curvature \"drifts\" during simplification. This process also yields a bijective map between the fine and coarse mesh, and prolongation operators for both scalar- and vector-valued data. Moreover, we obtain hard guarantees on element quality via intrinsic retriangulation---a feature unique to the intrinsic setting. The overall payoff is a \"black box\" approach to geometry processing, which decouples mesh resolution from the size of matrices used to solve equations. We show how our method benefits several fundamental tasks, including geometric multigrid, all-pairs geodesic distance, mean curvature flow, geodesic Voronoi diagrams, and the discrete exponential map.\n          <\/jats:p>","DOI":"10.1145\/3592403","type":"journal-article","created":{"date-parts":[[2023,7,26]],"date-time":"2023-07-26T14:29:21Z","timestamp":1690381761000},"page":"1-17","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":15,"title":["Surface Simplification using Intrinsic Error Metrics"],"prefix":"10.1145","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-1753-4485","authenticated-orcid":false,"given":"Hsueh-Ti Derek","family":"Liu","sequence":"first","affiliation":[{"name":"Roblox, Vancouver, Canada"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-5645-9636","authenticated-orcid":false,"given":"Mark","family":"Gillespie","sequence":"additional","affiliation":[{"name":"Carnegie Mellon University, Pittsburgh, United States of America"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-1356-0460","authenticated-orcid":false,"given":"Benjamin","family":"Chislett","sequence":"additional","affiliation":[{"name":"University of Toronto, Toronto, Canada"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2130-3735","authenticated-orcid":false,"given":"Nicholas","family":"Sharp","sequence":"additional","affiliation":[{"name":"University of Toronto, Seattle, United States of America"},{"name":"NVIDIA, Seattle, United States of America"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4603-7143","authenticated-orcid":false,"given":"Alec","family":"Jacobson","sequence":"additional","affiliation":[{"name":"University of Toronto, Toronto, Canada"},{"name":"Adobe Research, Toronto, Canada"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2772-7034","authenticated-orcid":false,"given":"Keenan","family":"Crane","sequence":"additional","affiliation":[{"name":"Carnegie Mellon University, Pittsburgh, United States of America"}]}],"member":"320","published-online":{"date-parts":[[2023,7,26]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1137\/S1064827503430138"},{"key":"e_1_2_2_2_1","volume-title":"Error diffusion on meshes. 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