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MOVING OBJECT DETECTION APPARATUS AND MOVING OBJECT DETECTION METHOD

  • US 20110255747A1
  • Filed: 06/28/2011
  • Published: 10/20/2011
  • Est. Priority Date: 12/28/2009
  • Status: Active Grant
First Claim
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1. A moving object detection apparatus which detects a moving object in video by performing segmentation on an image to specify all or part of regions of the moving object in the video, said moving object detection apparatus comprising:

  • an image input unit configured to receive input of a plurality of pictures included in the video;

    a trajectory calculating unit configured to calculate a plurality of trajectories by detecting, for each block including at least one pixel that is included in one of the received pictures, a motion of the block between two pictures included in the video, and concatenating detected motions for the plurality of pictures;

    a subclass classification unit configured to classify the calculated trajectories into a plurality of subclasses each of which is a set of similar trajectories;

    an inter-subclass approximate geodetic distance calculating unit configured to calculate, for each of the subclasses, an inter-subclass approximate geodetic distance which represents similarity between the subclass and another one of the subclasses, using an inter-subclass distance that is a distance including a minimum value of a linear distance between each of trajectories belonging to the subclass and one of trajectories belonging to the other one of the subclasses; and

    a segmentation unit configured to perform segmentation by specifying, based on the calculated inter-subclass approximate geodetic distance, a set of subclasses including similar trajectories as a class.

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