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  • Patent number: 9946933
    Abstract: A computer-implemented video classification method and system are disclosed. The method includes receiving an input video including a sequence of frames. At least one transformation of the input video is generated, each transformation including a sequence of frames. For the input video and each transformation, local descriptors are extracted from the respective sequence of frames. The local descriptors of the input video and each transformation are aggregated to form an aggregated feature vector with a first set of processing layers learned using unsupervised learning. An output classification value is generated for the input video, based on the aggregated feature vector with a second set of processing layers learned using supervised learning.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: April 17, 2018
    Assignee: XEROX CORPORATION
    Inventors: C├ęsar Roberto De Souza, Adrien Gaidon, Eleonora Vig, Antonio M. Lopez