MaxDetect

MaxDetect[image]
gives a binary image in which white pixels correspond to constant extended maxima in image.

MaxDetect[image,h]
finds extended maxima where the range of values is not greater than h.

MaxDetect[data,]
applies maxima detection to an array of data.

Details and OptionsDetails and Options

  • MaxDetect[image] finds regional maxima.
  • An extended maximum is a connected set of pixels with values greater than their surroundings.
  • MaxDetect[image,h] effectively chops maxima of height h or less and returns all remaining constant regional maxima.
  • MaxDetect[image] is equivalent to MaxDetect[image,0].
  • MaxDetect works with binary, grayscale, and other images.
  • MaxDetect works with 3D as well as 2D images, and also with data arrays of any rank.
  • The following options can be given:
  • CornerNeighborsTruewhether to include corner neighbors
    PaddingAutomaticpadding method to use
  • By default, for images black padding is used, and for data arrays, the minimum possible number is used so that the maxima at the boundary is always detected regardless of the range of data values.

ExamplesExamplesopen allclose all

Basic Examples  (3)Basic Examples  (3)

Local maxima of a list:

In[1]:=
Click for copyable input
Out[1]=

Find areas in an elevation map that rise above their surroundings by at least 0.2:

In[1]:=
Click for copyable input
Out[1]=

Detect maxima of a 3D image:

In[1]:=
Click for copyable input
Out[1]=
Introduced in 2010
(8.0)
| Updated in 2014
(10.0)