RegionBorder

RegionBorder[pts] returns a list of integer valued coordinate pairs of the border points of a region defined by the list of points pts.

The option ConnectivityNumber may be used to select either 4- or 8-connectivity of the pixel neighborhoods.

The default setting is ConnectivityNumber→4.

See also User's Guide 7.5.

Modified in Version 2.

Example

This loads the package.

In[1]:=

This defines a simple closed region.

In[2]:=

This defines a closed region as a list of point positions.

In[3]:=

Out[3]=

This returns the border pixels using the default 4-connected neighborhoods.

In[4]:=

In[5]:=

Out[5]=

Out[5]=

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