opposite of bwmorph thicken

Hi All,

'thicken' in bwmorph adds pixels to the exterior of objects without changing the EULER number. Is there a way to do the opposite....i.e. take away pixels from the exterior of objects without changing the Euler number? 'erode' does not fulfil this requirement.

Answer 1

[Image Analyst]

Use the skel option of bwmorph: " With n = Inf, removes pixels on the boundaries of objects but does not allow objects to break apart. The pixels remaining make up the image skeleton. This option preserves the Euler number. " You can use n less than inf if you want.

[Rainer]

Ah!! Thanks.