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author= James Tompkin;
description= The light field is a 4D record of a scene s rays—how do we present it to humans, interact with it, and process it computationally?;
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and (21), the (19), light (18), field (11), view (10), depth (10), for (10), diffusion (7), from (7), dense (6), lenslet (6), #display (6), that (6), with (5), fields (5), array (5), input (5), content (5), github (4), com (4), google (4), vision (4), consistent (4), estimation (4), pen (4), surface (4), james (4), brown (4), email (4), bluesky (4), bsky (4), social (4), brownvc (4), authors (3), every (3), sub (3), aware (3), conference (3), sparse (3), edges (3), into (3), bidirectional (3), 2021 (3), multi (3), technology (3), uist (3), 2015 (3), displays (3), siggraph (3), emerging (3), technologies (3), captured (3), algorithms (3), enable (3), process (3), tompkin (3), hosted (2), pages (2), using (2), jekyll (2), basic (2), theme (2), orderedlist (2), open (2), source (2), web (2), munity (2), gara (2), mond (2), practical (2), typo (2), graphy (2), joshua (2), hibbert (2), ryan (2), johnston (2), html5 (2), boiler (2), plate (2), activision (2), adobe (2), amazon (2), cognex (2), intel (2), meta (2), snap (2), foundation (2), industry (2), epsrc (2), bbc (2), nsf (2), darpa (2), nasa (2), funding (2), intrepid (2), collaborators (2), acknowledgements (2), central (2), propagated (2), aperture (2), occlusion (2), epi (2), space (2), british (2), machine (2), bmvc (2), via (2), direction (2), edge (2), points (2), are (2), against (2), computer (2), differentiable (2), images (2), first (2), superpixels (2), rather (2), than (2), 2019 (2), segmentation (2), position (2), joint (2), adaptive (2), lenticular (2), prints (2), demo (2), 2012 (2), painting (2), this (2), thread (2), min (2), kim (2), numair (2), khan (2), glasses (2), free (2), how (2), scene (2), center (2), information (2), room (2), 547 (2), 115 (2), waterman (2), street (2), providence (2), 02912 (2), folks (2), save (2), use (2), gcal (2), find (2), time (2), include (2), agenda (2), instructions (2), office (2), hours (2), weds (2), 1300 (2), book (2), appointment (2), orcid (2), scholar (2), jamestompkin (2), javascript (2), see (2), address (2), contact (2), student (2), researcher (2), group (2), onboarding (2), visual (2), computing (2), associate (2), professor (2), other, way, disoccluded, regions, completed, 2020, derived, diffused, guided, separate, texture, obtained, diffusing, set, whose, positions, depths, weights, differentiably, optimised, through, gaussian, splatting, rgb, reprojection, loss, scales, 50k, needed, non, trivial, scenes, pattern, recognition, cvpr, segments, horizontal, vertical, epis, then, clusters, propagates, across, all, views, stay, respect, viewpoint, shifts, being, outwards, single, international, iccv, superpixel, one, does, double, duty, output, plus, orientation, 150, millimetre, scale, accuracy, same, user, interface, software, treats, something, optimise, fix, advance, given, solve, size, shape, arrangement, trade, spatial, angular, resolution, where, matters, validated, printing, resulting, arrays, transactions, graphics, 2013, early, dual, purpose, both, senses, live, precursor, write, interactive, papers, simon, heinzle, stanislav, jakuschevskij, samuel, muff, henry, stone, qian, zhang, hanspeter, pfister, mccann, wojciech, matusik, jan, kautz, lucas, kasser, marc, alexa, two, arcs, sit, targeted, directly, reshape, paper, turns, second, kaist, developed, over, epipolar, plane, image, routine, captures, radiance, point, function, fully, describes, fills, refocusing, recovery, parallax, synthesis, displayed, offer, challenge, data, density, stresses, capture, devices, hardware, processing, pipelines, record, rays, present, humans, interact, computationally, back, homepage, skip, pptx, bib, doi, pdf,
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light fields from display to 4d algorithms james tompkin pdf doi bib pptx skip to content james tompkin associate professor visual computing bluesky brownvc bsky social github brownvc brown student researcher group onboarding process contact enable javascript to see my email address bluesky jamestompkin bsky social google scholar orcid office hours weds 1300 et book appointment brown folks save an email use gcal find a time and include an agenda instructions center for information technology room 547 115 waterman street providence ri 02912 acknowledgements my intrepid collaborators and co authors funding us nsf darpa nasa uk epsrc bbc industry activision adobe amazon cognex google intel meta snap ai foundation the open source web com munity html5 boiler plate ryan johnston joshua n hibbert practical typo graphy com eb gara mond hosted on github pages using jekyll basic theme by orderedlist james tompkin associate professor visual computing bluesky brownvc bsky social github brownvc brown student researcher group onboarding process contact enable javascript to see my email address bluesky jamestompkin bsky social google scholar orcid office hours weds 1300 et book appointment brown folks save an email use gcal find a time and include an agenda instructions center for information technology room 547 115 waterman street providence ri 02912 back to homepage light fields from display to 4d algorithms the light field is a 4d record of a scene s rays how do we present it to humans interact with it and process it computationally a light field captures the radiance at every point in space in every direction a 4d function that fully describes how light fills a scene captured light fields enable refocusing depth recovery and parallax view synthesis displayed light fields offer glasses free 3d the challenge is data density 4d content stresses capture devices display hardware and processing pipelines two sub arcs sit in this thread in the first 2012 2015 i targeted light field displays an emerging technologies demo of painting directly into a glasses free 3d display content adaptive lenticular prints that reshape the lenslet array to the captured light field and a uist paper that turns that lenslet array into a joint display and pen input surface in the second 2019 2021 numair khan and i with min h kim at kaist developed algorithms for dense estimation over captured 4d content view consistent superpixels via epipolar plane image segmentation edge aware bidirectional diffusion for depth and a differentiable diffusion routine for sparse to dense depth from multi view images authors marc alexa simon heinzle stanislav jakuschevskij lucas kasser jan kautz numair khan min h kim wojciech matusik james mccann samuel muff hanspeter pfister henry stone qian zhang papers in this thread interactive light field painting siggraph emerging technologies 2012 an early siggraph emerging technologies demo of a dual purpose lenslet array that both displays a light field and senses a 3d light pen position the live precursor to the uist 2015 write up content adaptive lenticular prints transactions on graphics siggraph 2013 treats the lenslet array as something to optimise rather than fix in advance given an input light field solve for lenslet size shape and arrangement that trade spatial against angular resolution where it matters validated by 3d printing the resulting arrays joint 5d pen input for light field displays user interface software and technology uist 2015 one lenslet array does double duty light field output and 5d pen input 3d position plus 2d orientation at 150 hz with millimetre scale accuracy the display surface and the input surface are the same surface view consistent 4d light field superpixel segmentation international conference on computer vision iccv 2019 segments horizontal and vertical epis first then clusters and propagates across all sub aperture views so superpixels stay consistent and respect occlusion as the viewpoint shifts rather than being propagated outwards from a single central view differentiable diffusion for dense depth estimation from multi view images computer vision and pattern recognition cvpr 2021 dense depth is obtained by diffusing a sparse set of points whose positions depths and weights are differentiably optimised through gaussian splatting against a multi view rgb reprojection loss scales to the 50k points needed for non trivial scenes edge aware bidirectional diffusion for dense depth estimation from light fields british machine vision conference bmvc 2021 sparse epi derived edges diffused into dense depth via bidirectional diffusion with the diffusion direction guided to separate depth edges from texture edges view consistent 4d light field depth estimation british machine vision conference bmvc 2020 central view depth propagated to every other sub aperture view in an occlusion aware way with disoccluded regions completed by epi space diffusion acknowledgements my intrepid collaborators and co authors funding us nsf darpa nasa uk epsrc bbc industry activision adobe amazon cognex google intel meta snap ai foundation the open source web com munity html5 boiler plate ryan johnston joshua n hibbert practical typo graphy com eb gara mond hosted on github pages using jekyll basic theme by orderedlist
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