Given an object that is represented by connected vertices (eg a mesh) this filter outputs the coordinates of the vertices that are on the boundary of the object. By default the input object if read from the standard input and the vertices are written to the standard output.
Examples
WlzBoundaryVertices -o out.num in.wlz
The boundary vertices of the object read from the file in.wlz are written to the file out.num as white space seperated acsii text.