getborder

Version 1.0.0.0 (1,55 KB) von Wolfgang Schwanghart
returns a logical border inside or outside a mask
5.0
(1)
1,8K Downloads
Aktualisiert 4. Jan 2008

Lizenz anzeigen

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

Zitieren als

Wolfgang Schwanghart (2025). getborder (https://www.mathworks.com/matlabcentral/fileexchange/12303-getborder), MATLAB Central File Exchange. Abgerufen.

Kompatibilität der MATLAB-Version
Erstellt mit R14
Kompatibel mit allen Versionen
Plattform-Kompatibilität
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Version Veröffentlicht Versionshinweise
1.0.0.0

removed padding since it was not neccessary