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Starting with video-rate footage as input, our post-process downsamples the source material into a time-lapse video and provides user controls for retaining, removing, and resampling events. We employ two techniques for selecting and combining source frames to form the output. First, we present a non-uniform sampling method, based on dynamic programming, which optimizes the sampling of the input video to match the user's desired duration and visual objectives. We present multiple error metrics for this optimization, each resulting in different sampling characteristics. To complement the non-uniform sampling, we present the\n            <jats:italic>virtual shutter<\/jats:italic>\n            , a non-linear filtering technique that synthetically extends the exposure time of time-lapse frames.\n          <\/jats:p>","DOI":"10.1145\/1276377.1276505","type":"journal-article","created":{"date-parts":[[2007,9,14]],"date-time":"2007-09-14T13:44:55Z","timestamp":1189777495000},"page":"102","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":37,"title":["Computational time-lapse video"],"prefix":"10.1145","volume":"26","author":[{"given":"Eric P.","family":"Bennett","sequence":"first","affiliation":[{"name":"The University of North Carolina at Chapel Hill"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leonard","family":"McMillan","sequence":"additional","affiliation":[{"name":"The University of North Carolina at Chapel Hill"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2007,7,29]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/1015706.1015718"},{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/1073204.1073272"},{"key":"e_1_2_2_4_1","volume-title":"Picturing Time: The Work of Etienne-Jules Marey","author":"Braun M.","year":"1995","unstructured":"Braun , M. 1995 . 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Divakaran, A., Peker, K. A., Radhakrishnan, R., Xiong, Z., and Cabasson, R. 2003. Video summarization using MPEG-7 motion activity and audio descriptors. Tech. Rep. TR-2003-34, Mitsubishi Electric Research Laboratory."},{"key":"e_1_2_2_8_1","doi-asserted-by":"publisher","DOI":"10.3138\/FM57-6770-U75U-7727"},{"key":"e_1_2_2_9_1","unstructured":"Edgerton H. E. and Killian J. R. 1979. Moments of Vision. MIT Press.  Edgerton H. E. and Killian J. R. 1979. Moments of Vision . MIT Press."},{"key":"e_1_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.1145\/957013.957121"},{"key":"e_1_2_2_11_1","unstructured":"Kinsman E. 2006. The time-lapse photography FAQ. www.sciencephotography.com.  Kinsman E. 2006. The time-lapse photography FAQ. www.sciencephotography.com."},{"key":"e_1_2_2_12_1","volume-title":"The Human Figure In Motion","author":"Muybridge E.","unstructured":"Muybridge , E. 1955. The Human Figure In Motion . Dover . Muybridge, E. 1955. The Human Figure In Motion. 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