The goal of this work is to create several functions for processing of two input images of one object to uncover a geometry of the scene. There are well-known techniques how to compute a fundamental matrix and reconstruct 3D coordinates. We have tested several of them to find the method that is fastest and rather precise. The functions are implemented in the environment of Borland C++ Builder. Calibrated cameras and start in a situation when several points are correctly marked in both pictures are assumed.