Image Processing Toolbox User's Guide |
Syntax
Description
BW = imextendedmin(I,h)
computes the extended-minima transform, which is the regional minima of the H-minima transform. h
is a nonnegative scalar.
Regional minima are connected components of pixels with a constant intensity value, and whose external boundary pixels all have a higher value
By default, imextendedmin
uses 8-connected neighborhoods for 2-D images, and 26-connected neighborhoods for 3-D images. For higher dimensions, imextendedmin
uses conndef(ndims(I),'maximal')
.
BW = imextendedmin(I,h,CONN)
computes the extended-minima transform, where CONN
specifies the connectivity. CONN
can have any of the following scalar values.
Connectivity can be defined in a more general way for any dimension by using for CONN
a 3-by-3-by-...-by-3 matrix of 0
's and 1
's. The 1
-valued elements define neighborhood locations relative to the center element of CONN
. Note that CONN
must be symmetric about its center element.
Class Support
I
can be of any nonsparse numeric class and any dimension. BW
has the same size as I
and is always logical.
Example
See Also
conndef
, imextendedmax
, imreconstruct
Reference
[1] Soille, P., Morphological Image Analysis: Principles and Applications, Springer-Verlag, 1999, pp. 170-171.
imextendedmax | imfill |
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