Raster to Vector conversion can be achieved in
many ways. Using a combination of WiseImage and ArcView software,
the method of converting contour lines from a paper map to a
Digital Elevation Model can be achieved.
scanning the paper map, the resulting raster can be vectorized
in WiseImage using an automatic conversion or an auto-trace
format (.dxf) vector file created in WiseImage from the traced
contours and converted to a shapefile for use in ArcView. The
appropriate elevations are specified for each line in the ArcView
Shapefile line theme
is converted to a point theme.
The Shapefile points
are interpolated into a Digital Elevation Model. The DEM can
be opened in ArcView's 3D Analyst to view it in 3 dimensions.