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A Theory of the Quasi-static World
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@InProceedings{sanders:QSL:ICPR2002,
  author = 	 {Brandon C.S. Sanders and Randal C. Nelson and Rahul Sukthankar},
  title = 	 {A Theory of the Quasi-static World},
  booktitle =	 {Proceedings of ICPR},
  pages =	 {1--6},
  year =	 2002,
  volume =	 3,
  address =	 {Quebec City, Canada},
  month =	 aug # "~11--15",

  abstract =   { We present the theory behind a novel unsupervised
                 method for discovering quasi-static objects, objects
                 that are stationary during some interval of
                 observation, within image sequences acquired by any
                 number of uncalibrated cameras. For each pixel we
                 generate a signature that encodes the pixel's
                 temporal structure. Using the set of temporal
                 signatures gathered across views, we hypothesize a
                 global schedule of events and a small set of objects
                 whose arrivals and departures explain the events. The
                 paper specifies observability conditions under which
                 the global schedule can be established and presents
                 the QSL algorithm that generates the
                 maximally-informative mapping of pixels' observations
                 onto the objects they stem from. Our framework
                 ignores distracting motion, correctly deals with
                 complicated occlusions, and naturally groups
                 observations across cameras. The sets of 2D masks we
                 recover are suitable for unsupervised training and
                 initialization of object recognition and tracking
                 systems.},

  annote = {Introduces Temporally Coherent Clusters (TCCs), signature
                 decomposition for quasi-online OD, the 2D Sched
                 algorithm,... },

}