Opening

Opening[image,ker]

gives the morphological opening of image with respect to the structuring element ker.

Opening[image,r]

gives the opening with respect to a range-r square.

Opening[data,…]

applies opening to an array of data.

Details

  • Opening works with arbitrary 2D and 3D images, operating separately on each channel, as well as data arrays of any rank.
  • The structuring element ker is a matrix containing 0s and 1s.
  • Opening automatically pads structuring elements to have odd dimensions.
  • Opening[image,r] is equivalent to Opening[image,BoxMatrix[r]].

Examples

open allclose all

Basic Examples  (4)

Opening of a binary image using a disk-shaped structuring element:

In[1]:=
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Out[1]=

Opening of a grayscale image using a disk-shaped structuring element:

In[1]:=
Click for copyable input
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Opening of a color photo with a diamond-shaped structuring element:

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

Opening of a 3D image using a cubic structuring element:

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

Scope  (9)

Applications  (2)

Properties & Relations  (3)

See Also

Closing  Dilation  Erosion  GeodesicOpening  HitMissTransform  TopHatTransform

Introduced in 2008
(7.0)
| Updated in 2012
(9.0)