[mmunion] [Up] [mmsebox] Structuring Elements

mmimg2se
Create a structuring element from a pair of images.

Synopsis

B = mmimg2se ( fd , FLAT = "FLAT", f = Null )

Input

fd Image Binary image

The image is in the matrix format where the origin (0,0) is at the matrix center.
FLAT String

Structuring element: 'FLAT' or 'NON-FLAT'.

Default: "FLAT" ('FLAT')
f Image Unsigned gray-scale (uint8 or uint16), signed (int32) or binary image

Default: Null

Output

B Structuring Element

Description

mmimg2se creates a flat structuring element B from the binary image fd or creates a non-flat structuring element b from the binary image fd and the gray-scale image f. fd represents the domain of b and f represents the image of the points in fd.

Examples

Let us apply mmimg2se to create structuring elements. In the example below, the flat 3x3 diamond is created. 

a = mmimg2se(mmbinary([
  [0,1,0],
  [1,1,1],
  [0,1,0]]))
print mmseshow(a)
[[False  True False]
 [ True  True  True]
 [False  True False]]

In this next example, the image sizes are even. Note the origin of the structuring element. 

b = mmbinary([
  [0,1,1,1],
  [1,1,1,0]])
b1 = mmimg2se(b)
print mmseshow(b1)
[[False False False False False]
 [False False  True  True  True]
 [False  True  True  True False]]

In the example below, a non-flat diamond is created. 

c = mmbinary([
  [0,1,0],
  [1,1,1],
  [0,1,0]])
d = int32([
  [0,0,0],
  [0,1,0],
  [0,0,0]])
e = mmimg2se(c,'NON-FLAT',d)
print mmseshow(e)
[[-2147483647           0 -2147483647]
 [          0           1           0]
 [-2147483647           0 -2147483647]]

Equation

Flat structuring element:
Non-flat structuring element:
H and W are the number of rows and columns of f, respectively.

See also

mmfreedom Control automatic data type conversion.
mmsebox Create a box structuring element.
mmsecross Diamond structuring element and elementary 3x3 cross.
mmsedisk Create a disk or a semi-sphere structuring element.
mmseline Create a line structuring element.
mmseshow Display a structuring element as an image.
mmdil Dilate an image by a structuring element.

See also

mmfreedom Control automatic data type conversion.
mmsecross Diamond structuring element and elementary 3x3 cross.
mmseshow Display a structuring element as an image.
mmdil Dilate an image by a structuring element.
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