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Our method realizes motion segmentation of feature point trajectories by hierarchically separating the trajectories into two affine spaces in a situation that we do not know the number of independently moving objects. We judge that input trajectories should be separated by comparing the likelihoods computed from those trajectories before\/after separation. We also consider integration of the resulting separated trajectories for avoiding too much segmentations. By using real video images, we confirmed the efficiency of our proposed method.<\/jats:p>","DOI":"10.1186\/s41074-016-0002-3","type":"journal-article","created":{"date-parts":[[2016,8,3]],"date-time":"2016-08-03T16:54:10Z","timestamp":1470243250000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Multibody motion segmentation for an arbitrary number of independent motions"],"prefix":"10.1186","volume":"8","author":[{"given":"Yutaro","family":"Sako","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8339-5631","authenticated-orcid":false,"given":"Yasuyuki","family":"Sugaya","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2016,8,2]]},"reference":[{"issue":"3","key":"2_CR1","doi-asserted-by":"publisher","first-page":"159","DOI":"10.1023\/A:1008000628999","volume":"29","author":"JP Costeira","year":"1998","unstructured":"Costeira JP, Kanade T (1998) A multibody factorization method for independently moving objects. 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