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Graph."],"published-print":{"date-parts":[[2014,7,27]]},"abstract":"<jats:p>\n            We analyze light propagation in an unknown scene using projectors and cameras that operate at transient timescales. In this new photography regime, the projector emits a spatio-temporal 3D signal and the camera receives a transformed version of it, determined by the set of all light transport paths through the scene and the time delays they induce. The underlying 3D-to-3D transformation encodes scene geometry and global transport in great detail, but individual transport components (\n            <jats:italic>e.g<\/jats:italic>\n            ., direct reflections, inter-reflections, caustics,\n            <jats:italic>etc<\/jats:italic>\n            .) are coupled nontrivially in both space and time.\n          <\/jats:p>\n          <jats:p>\n            To overcome this complexity, we observe that transient light transport is always\n            <jats:italic>separable in the temporal frequency domain<\/jats:italic>\n            . This makes it possible to analyze transient transport one temporal frequency at a time by trivially adapting techniques from conventional projector-to-camera transport. We use this idea in a prototype that offers three never-seen-before abilities: (1) acquiring time-of-flight depth images that are robust to general indirect transport, such as interreflections and caustics; (2) distinguishing between direct views of objects and their mirror reflection; and (3) using a photonic mixer device to capture sharp, evolving wavefronts of \"light-in-flight\".\n          <\/jats:p>","DOI":"10.1145\/2601097.2601103","type":"journal-article","created":{"date-parts":[[2014,7,22]],"date-time":"2014-07-22T15:08:20Z","timestamp":1406041700000},"page":"1-11","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":91,"title":["Temporal frequency probing for 5D transient analysis of global light transport"],"prefix":"10.1145","volume":"33","author":[{"given":"Matthew","family":"O'Toole","sequence":"first","affiliation":[{"name":"University of Toronto"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Felix","family":"Heide","sequence":"additional","affiliation":[{"name":"University of British Columbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Xiao","sequence":"additional","affiliation":[{"name":"University of British Columbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthias B.","family":"Hullin","sequence":"additional","affiliation":[{"name":"University of Bonn"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wolfgang","family":"Heidrich","sequence":"additional","affiliation":[{"name":"University of British Columbia and KAUST"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kiriakos N.","family":"Kutulakos","sequence":"additional","affiliation":[{"name":"University of Toronto"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2014,7,27]]},"reference":[{"key":"e_1_2_2_1_1","volume-title":"Proc. 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