Wolfram Language & System 10.3 (2015)|Legacy Documentation

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tracks features from through .

tracks features starting from the initial set of points pts in .

Details and OptionsDetails and Options

  • ImageFeatureTrack tracks feature points in a sequence of images. All images must have the same dimensions.
  • ImageFeatureTrack[{image1,image2,,imagen}] automatically determines a set of feature points in the images to track, and returns a list , where is the position of the features in .
  • ImageFeatureTrack assumes the standard image coordinate system, where x runs from to width and y runs from to height. Position corresponds to the bottom-left corner of the image.
  • If a point is not found in some , the coordinates are returned as Missing[].
  • The following options can be specified:
  • MaskingAllregion of interest
    MaxFeatureDisplacement15maximum distance between corresponding points in adjacent images
    MaxFeatures100maximum number of tracked points
    MaxIterations20maximum number of iterations
    Tolerance0.03tolerance for matching points
  • With the setting MaxFeatureDisplacement->{r1,r2}, different search window ranges can be specified for vertical and horizontal directions.
  • With Masking->roi, the set of points is restricted so that the returned points of all lie within the region of interest roi.
  • The tracking between subsequent images is computed by an iterative algorithm. With MaxIterations->n and Tolerance->tol, the algorithm terminates when the iterative displacement is less than tol or the number of iterations exceeds n.
Introduced in 2012
| Updated in 2015