http://www.cadfamily.com/a/CAD_CAID/Marine/Creating-Marker-Points-from-lines-plans-in-Maxsurf_1642.html
The first step in the process of fitting a surface to a lines plan is getting a three dimensional
set of marker points to use as a guide. If you have a lines plan that can be scanned into a .jpeg
or .bmp file, this is a fairly straightforward exercise.
When scanning the linesplan it is important to do this at a reasonably high resolution to
minimize any digitizing errors. In this document, scanning refers to the process of creating a
bitmap image (such as a jpeg or bmp file) from a paper drawing, while the term digitizing
refers to the creation of a point in 3D space (i.e. having x,y and z co-ordinates) from
information on a scanned drawing.
It is also important to make sure that the scanned image is not rotated relative to the screen,
this will make it extremely difficult to digitize accurately. If you find that your image does
have a slight rotation, it is best to correct this in a paint program such as Photoshop or
Paintshop Pro prior to importing it into Maxsurf.
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