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An important feature of SPMs is that they are accompanied with graphics software that aids in the visualization of the data output by the microscopes. Besides two-dimensional gray scale maps, many microscopes provide increasingly sophisticated routines for three-dimensional visualization. The simplest case is a line plot where the scan lines output by the microscope are plotted in perspective.
(Pingali., 1996) Scanning Probe Microscopy: Trends and Image Processing Issues.