1. A system for measuring 3D distances and dimensions of objects that are visible in endoscopic images, the system comprising: a) a flexible or rigid endoscopic device comprising visualization means; b) a conventional endoscopy system adapted to operate the endoscopic device and to obtain and display images gathered by the visualization means; c) a light plane generating module comprising a light source and optical elements configured to generate a light plane; and d) a processing station comprising: processing means, dedicated software modules adapted for making both Euclidian and geodesic measurements, a graphical user interface (GUI), software, a pointing device, and a display adapted to present to the user of the system images acquired by the visualization means overlaid with graphics and text.