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 by default treats all pixels surrounding a given pixel as adjacent. A given pixel has eight adjacent pixels in 2D and 26 adjacent pixels in 3D.
  • The option setting CornerNeighbors->False treats only the pixels in the coordinate directions as adjacent, which would include four pixels in 2D and six pixels in 3D.
  • 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.
  • MaxDetect takes a Padding option. The default setting is Padding->0, corresponding to a black background.

ExamplesExamplesopen allclose all

Basic Examples (2)Basic Examples (2)

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

Click for copyable input

Find the stars and stripes in a flag:

Click for copyable input
New in 8 | Last modified in 9
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