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Video retrieval system for human face content

  • US 7,881,505 B2
  • Filed: 09/29/2006
  • Issued: 02/01/2011
  • Est. Priority Date: 09/29/2006
  • Status: Active Grant
First Claim
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1. A method for processing video data, comprising:

  • detecting human faces in a plurality of video frames in said video data using a processor;

    for at least one detected human face, identifying a face-specific set of video frames using said processor irrespective of whether said detected human face is present in said face-specific set of video frames in a substantially temporally continuous manner;

    grouping all video frames in said face-specific set of video frames into a plurality of face tracks using said processor, wherein each face track contains corresponding one or more video frames having at least a substantial temporal continuity therebetween;

    segmenting pixels associated with said at least one detected human face in each video frame in said face-specific set of video frames using said processor so as to extract color signature of said at least one detected human face in each said face-specific video frame;

    using said processor, merging two or more of said plurality of face tracks that are disjoint in time based on a comparison of the color signatures of said at least one detected human face appearing in video frames constituting said two or more of said plurality of face tracks; and

    enabling a user to view on an electronic display for said processor face-specific video segments of said at least one detected human face in said video data based on said merging of temporally disjoint face tracks.

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