This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)

MinFilter

MinFilter
filters image by replacing every value by the minimum in its range r neighborhood.
MinFilter
applies min filtering to an array of data.
  • MinFilter finds the minimum in × blocks centered on each pixel.
  • At the edges of an image, MinFilter uses smaller neighborhoods.
  • MinFilter uses neighborhoods with vertical range and horizontal range .
  • For multichannel images, MinFilter replaces each pixel by a pixel in its neighborhood that has the minimum total intensity, averaged over all channels.
  • In MinFilter, data can be an array of any rank.
Use a minimum filter to dilate the darker parts of a color image:
Use minimum filtering to erode thinner objects:
Minimum filter of a vector:
Use a minimum filter to dilate the darker parts of a color image:
In[1]:=
Click for copyable input
Out[1]=
 
Use minimum filtering to erode thinner objects:
In[1]:=
Click for copyable input
Out[1]=
 
Minimum filter of a vector:
In[1]:=
Click for copyable input
Out[1]=
New in 7