getborder

Version 1.0.0.0 (1,55 ko) par Wolfgang Schwanghart
returns a logical border inside or outside a mask
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Mise à jour 4 jan. 2008

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Ib = getborder(I,method)

getborder returns the outline around logical values in I (mask) using a 8-connected neighborhood.
I must be a logical n*m matrix. method 'inside' returns the inner border around "islands" of logical values. 'outside' returns the border outside the islands.

Example:

I = peaks(8)<0;

Ib = getborder(I,'inside')

Ib =

0 0 1 1 1 1 1 1
0 0 1 1 0 1 1 0
1 0 0 1 1 1 0 0
1 1 1 0 0 0 0 0
1 1 1 0 0 0 0 0
1 1 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0

Ib = getborder(I,'outside')

Ib =

0 1 0 0 0 0 0 0
1 1 0 0 0 0 0 1
0 1 1 0 0 0 1 1
0 0 0 1 1 1 1 0
0 0 0 1 0 0 0 0
0 0 1 1 0 0 0 0
1 1 1 0 0 0 0 0
0 0 0 0 0 0 0 0

Citation pour cette source

Wolfgang Schwanghart (2024). getborder (https://www.mathworks.com/matlabcentral/fileexchange/12303-getborder), MATLAB Central File Exchange. Récupéré le .

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Créé avec R14
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Version Publié le Notes de version
1.0.0.0

removed padding since it was not neccessary