ImageFeatureTrack

ImageFeatureTrack[{image1,image2,,imagen}]
tracks features from through .

ImageFeatureTrack[{image1,image2,,imagen},pts]
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
    MaxFeatures100maximum number of tracked points
    MaxIterations20maximum number of iterations
    Tolerance0.03tolerance for matching points
    "MaxDistance"15maximum distance between correponding points in adjacent images
  • With the setting , 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.
  • The tracking between subsequent images is computed by an iterative algorithm. The algorithm terminates when the iterative displacement is less than tol, where tol is the setting of the option Tolerance->tol, or the number of iterations exceeds n, where MaxIterations->n.
Introduced in 2012
(9.0)