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Apparatus and method for processing video data

  • US 7,508,990 B2
  • Filed: 06/07/2007
  • Issued: 03/24/2009
  • Est. Priority Date: 07/30/2004
  • Status: Active Grant
First Claim
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1. A computer-implemented method for processing video signal data from a plurality of video frames, the method comprising:

  • using the computer to perform the following stepsdetecting an object in two or more given video frames, each video frame being formed of pel data;

    tracking the detected object through the two or more video frames;

    segmenting pel data corresponding to the detected object from other pel data in the two or more video frames so as to generate a first intermediate form of the video signal data, the segmenting utilizing a spatial segmentation of the pel data;

    generating correspondence models of elements of the detected object, each correspondence model relating an element of the detected object in one video frame to a corresponding element of the detected object in another video frame; and

    using the correspondence models, normalizing the segmented pel data, said normalizing including modeling global motion of the detected object and resulting in re-sampled pel data corresponding to the detected object in the two or more video frames, the re-sampled pel data providing an object-based encoded form of the video signal data normalized as output;

    the object-based encoded form being able to be decoded by;

    (i) restoring spatial positions of the re-sampled pel data by utilizing the correspondence models, thereby generating restored pels corresponding to the detected object; and

    (ii) recombining the restored pel data together with the other pel data in the first intermediate form of the video signal data to re-create an original video frame; and

    wherein generating correspondence models includes estimating a multi-dimensional projective motion model.

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