Mathematica 9 is now available
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT.
SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION.
Wolfram Mathematica Documentation Center
DOCUMENTATION CENTER SEARCH
New to Mathematica? Find your learning path »
Mathematica > Data Manipulation > Image Processing & Analysis > Mathematical Morphology > DistanceTransform >
BUILT-IN MATHEMATICA SYMBOLTutorials »|See Also »|More About »

DistanceTransform

Updated In 8 Graphic
DistanceTransform[image]
gives the distance transform of image, in which the value of each pixel is replaced by its distance to the nearest background pixel.
DistanceTransform
treats values above t as foreground.
MORE INFORMATION
  • DistanceTransform gives an Image object in which the value of each pixel is the absolute Euclidean distance in pixels to the nearest pixel of background.
  • For multichannel images, DistanceTransform operates on the intensity averaged over all channels.
  • The following option can be given:
DistanceFunctionEuclideanDistancedistance metric function
EXAMPLESCLOSE ALL
Basic Examples   (1)
Distance transform of a binary image:
Distance transform of a binary image:
In[1]:=
Click for copyable input
Out[1]=
Scope   (1)
Distance transform of a color image:
Applications   (2)
Apply a LoG filter to the output of a distance transform:
Ultimate erosion of a binary image:
New in 7 | Last modified in 8
Ask a question about this page  |  Suggest an improvement  |  Leave a message for the team
Format:   HTML  |  CDF