Hello
This VBS script remove on point on two on the selected polylines, this remove the "stairs" effect resulting of a bitmap digitizing.
Simple but efficient

Prior to use it, create a new layer so the new created polylines can be easily separated from the source polylines.
' Remove stairs (for digitized images)
' scan all selected polylines and remove one point on two
sub main
Dim p As Polyline
Dim p2 As Polyline = New Polyline 'temporary polyline
Dim toggle As Boolean = False
Dim pt As Point3F
If CamBamUI.MainUI.ActiveView.SelectedEntities.Length > 0 Then 'if something selected
For Each ent As Entity In CamBamUI.MainUI.ActiveView.SelectedEntities 'scan all selected entyties
If TypeOf ent Is Polyline Then 'reject other than polyline object
p = ent
For Each p_item As PolylineItem In p.Points 'scan the point item list
If toggle = True Then
pt.X = p_item.Point.X
pt.Y = p_item.Point.Y
pt.Z = p_item.Point.Z
p2.Add(pt)
toggle = False
Else 'item ignored
toggle = True
End If
Next
If p.Closed = True then
p2.Closed = True
else
p2.Closed = False
End If
Doc.Add(p2.Clone)'add a clone of the temp polyline to the document
p2.Points.Clear()' erase the temp polyline
End If
Next ent
CamBamUI.MainUI.ActiveView.RefreshView()
End If
end sub
edit:
an example

++
David
(PS: VB script does not works on 64bits versions of CamBam)