International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B3. Istanbul 2004 
low-level language, the file size of the program is small. Strong 
memory management and speed is a “sine qua non” for an 
image processing operation, so that it was inevitable to choose 
the C++ language for this study. 
The reason why the result file is saved in XYZ ASCII is that, it 
is supported by CAD, GIS and other engineering software. 
Thus, the data results and digital elevation models can be 
formed. 
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