The aim of this research has been to explore different geometries and to develop simple geometries that can provide a 3-D data. For this purpose, the usual, and synchronised triangulation scanning geometries are formulated and intensity to coordinate conversion is discussed for each case. By simulating each geometry, the mesh diagram showing the 3-D image points is presented. Different parameters of the geometries are varied, and their effects on the image formation are reported. As a result an optimum geometry is presented that can be employed to obtain a 3-D image of any arbitrary surface.