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Hierarchical video search and recognition system

  • US 8,874,584 B1
  • Filed: 02/24/2010
  • Issued: 10/28/2014
  • Est. Priority Date: 02/24/2010
  • Status: Active Grant
First Claim
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1. A system for content recognition, search, and retrieval in visual data, the system comprising one or more processors configured to perform operations of:

  • receiving unlabeled visual data as an input;

    extracting a set of activity-agnostic content descriptors from the unlabeled, visual data with a hierarchical content descriptor module having a plurality of levels, resulting in a set of generated activity-agnostic content descriptors, wherein each level of the hierarchical content descriptor module generates a distinct set of activity-agnostic content descriptors;

    indexing the generated activity-agnostic content descriptors with a hierarchical content indexing module having a plural of levels corresponding to the plurality of levels of the hierarchical content descriptor module, resulting in a set of indexed content descriptors;

    wherein each level of the content indexing module comprises a distinct set of indexed content descriptors from a corresponding level in the hierarchical content descriptor module;

    storing the unlabeled visual data, the set of generated activity-agnostic content descriptors, and the set of indexed content descriptors in a storage module;

    searching the storage module and retrieving visual data containing, a content of interest based on a user query;

    refining the user query based on feature weighting; and

    presenting the visual data containing the content of interest to the user.

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