{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T18:29:18Z","timestamp":1793384958981,"version":"4.5.0"},"reference-count":35,"publisher":"Association for Computing Machinery (ACM)","issue":"6","license":[{"start":{"date-parts":[[2017,12,5]],"date-time":"2017-12-05T00:00:00Z","timestamp":1512432000000},"content-version":"vor","delay-in-days":389,"URL":"http:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"funder":[{"DOI":"10.13039\/100000145","name":"Division of Information and Intelligent Systems","doi-asserted-by":"publisher","award":["1528025"],"award-info":[{"award-number":["1528025"]}],"id":[{"id":"10.13039\/100000145","id-type":"DOI","asserted-by":"publisher"}]},{"name":"UCB MURI","award":["N00014-13-1-0341"],"award-info":[{"award-number":["N00014-13-1-0341"]}]},{"DOI":"10.13039\/100000121","name":"Division of Mathematical Sciences","doi-asserted-by":"publisher","award":["1521608"],"award-info":[{"award-number":["1521608"]}],"id":[{"id":"10.13039\/100000121","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Graph."],"published-print":{"date-parts":[[2016,11,11]]},"abstract":"<jats:p>\n                    Large repositories of 3D shapes provide valuable input for data-driven analysis and modeling tools. They are especially powerful once annotated with semantic information such as salient regions and functional parts. We propose a novel active learning method capable of enriching\n                    <jats:italic toggle=\"yes\">massive<\/jats:italic>\n                    geometric datasets with\n                    <jats:italic toggle=\"yes\">accurate<\/jats:italic>\n                    semantic region annotations. Given a shape collection and a user-specified region label our goal is to correctly demarcate the corresponding regions with minimal manual work. Our active framework achieves this goal by cycling between manually annotating the regions, automatically propagating these annotations across the rest of the shapes, manually verifying both human and automatic annotations, and learning from the verification results to improve the automatic propagation algorithm. We use a unified utility function that explicitly models the time cost of human input across all steps of our method. This allows us to jointly optimize for the set of models to annotate and for the set of models to verify based on the predicted impact of these actions on the human efficiency. We demonstrate that incorporating verification of all produced labelings within this unified objective improves both accuracy and efficiency of the active learning procedure. We automatically propagate human labels across a dynamic shape network using a conditional random field (CRF) framework, taking advantage of global shape-to-shape similarities, local feature similarities, and point-to-point correspondences. By combining these diverse cues we achieve higher accuracy than existing alternatives. We validate our framework on existing benchmarks demonstrating it to be significantly more efficient at using human input compared to previous techniques. We further validate its efficiency and robustness by annotating a massive shape dataset, labeling over 93,000 shape parts, across multiple model classes, and providing a labeled part collection more than\n                    <jats:italic toggle=\"yes\">one order of magnitude<\/jats:italic>\n                    larger than existing ones.\n                  <\/jats:p>","DOI":"10.1145\/2980179.2980238","type":"journal-article","created":{"date-parts":[[2016,11,11]],"date-time":"2016-11-11T12:02:54Z","timestamp":1478865774000},"page":"1-12","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":1074,"title":["A scalable active framework for region annotation in 3D shape collections"],"prefix":"10.1145","volume":"35","author":[{"given":"Li","family":"Yi","sequence":"first","affiliation":[{"name":"Stanford University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vladimir G.","family":"Kim","sequence":"additional","affiliation":[{"name":"Stanford University and Adobe Research"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Duygu","family":"Ceylan","sequence":"additional","affiliation":[{"name":"Adobe Research"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I-Chao","family":"Shen","sequence":"additional","affiliation":[{"name":"University of British Columbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengyan","family":"Yan","sequence":"additional","affiliation":[{"name":"Stanford University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Su","sequence":"additional","affiliation":[{"name":"Stanford University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cewu","family":"Lu","sequence":"additional","affiliation":[{"name":"Stanford University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qixing","family":"Huang","sequence":"additional","affiliation":[{"name":"TTI Chicago and UT Austin"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alla","family":"Sheffer","sequence":"additional","affiliation":[{"name":"University of British Columbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leonidas","family":"Guibas","sequence":"additional","affiliation":[{"name":"Stanford University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2016,12,5]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","unstructured":"Boyko A. and Funkhouser T. 2014. 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