Method Detail

• createLocalizableLabelCursor

  LocalizableCursor<FakeType> createLocalizableLabelCursor(T label)

  A localizable cursor that iterates over every pixel with the given label.

  Parameters:

  label - - the label of the pixels to be traversed

  Returns:

  a localizable cursor that can be used to find the position of every pixel with the given label.

• createLocalizablePerimeterCursor

  LocalizableCursor<FakeType> createLocalizablePerimeterCursor(T label)

  A localizable cursor that iterates over every pixel in the perimeter of the labeled object. Given a space S(x[1],...x[D]) of dimension D, a pixel is a perimeter pixel of a label if the pixel has that label and there is some pixel S(x[1]+y[1],..x[D]+y[D]) that is not labeled for sum(abs(y[i in 1..D])) == 1 - in other words, the pixel is adjacent to a non-labeled pixel where diagonals don't count.

  Parameters:

  label - - the label to be traversed

  Returns:

  a cursor over the perimeter of the labeled object

• getExtents

  boolean getExtents(T label,
                     int[] minExtents,
                     int[] maxExtents)

  Get the extents of the bounding box around the labeled object

  Parameters:

  label - - the label of the object in question

  minExtents - - on input, must be an array of size D or larger where D is the dimension of the space. On output, the minimum value of the pixel coordinates for the labeled object is stored in the array.

  maxExtents - - the maximum value of the pixel coordinates for the labeled object.

  Returns:

  true if some pixel has the label

• getRasterStart

  boolean getRasterStart(T label,
                         int[] start)

  The coordinates of the first pixel with the given label when raster scanning through the space. There is a class of algorithms on labeled objects that trace around the perimeter or surface of the object, starting with the first pixel encountered in a raster scan (given a space S(x[1],..x[D]) of dimension D, sort the coordinates of the labeled pixels by increasing x[1], then increasing x[2], etc and pick the first in the list). This function can be used to find the pixel. Note: the algorithms typically assume that all similarly labeled pixels are connected and that either there are no holes or holes are not significant.

  Parameters:

  label - - search on pixels of this label

  start - - on input, an array of at least size D, on output the coordinates of the raster start.

  Returns:

  true if some pixel has the label

• getArea

  long getArea(T label)

  Return the area of the labeled object in units of pixels or the volume of the labeled object in voxels (or the hyper-volume of the 4/5-d object in ?toxels? or ?spectracels? or ?spectratoxels?)

  Returns:

  the area of the labeled object in pixels.

• getLabels

  Collection<T> getLabels()

  Find all of the labels used to label pixels.

  Returns:

  array of labels used.