5.2 Surface rendering
5.2.1 Background
Surface 3D reconstruction is performed by means of triangulation of a segmented 3D area. The number of
triangles determines the quality of the reconstruction. A surface 3D model shall be made in the Standard
Tessellation Language (STL) Format to configure the 3D surface reconstruction.
5.2.2 STL Format
STL Format a stereolithography computer-aided design (CAD) software is widely used for rapid
prototyping and computer-aided manufacturing. STL files describe only the surface geometry of a 3D
object without any representation of color, texture, or other common CAD model attributes. The STL
format specifies both ASCII and binary representations. Binary files are more common because they are
more compact.
The file begins with a solid record (which shall include a name for the object) and ends with an end solid
record. Each triangle begins with a facet record and ends with an end facet record. The normal vector, if