Method for 3D reconstruction of an object in a scene

A method for 3D reconstruction of an object in a scene exposed to a wave, based on sensed signals back-scattered by the scene, the method comprising:

• step 1) generate generating, from the sensed signals, a set of 3D points to which their back-scattering intensity by the scene is respectively assigned, these 3D points associated with their intensity being denoted set A of reconstructed data;
• step 2) starting from this set A of reconstructed data, extracting a set B of data, whose points are located within a volume containing the object, as a function of volume characteristics F2;
• step 3) starting from the set B, extracting a set C of data characterizing the external surface of the object, this surface having regions with missing parts, depending on an extraction criterion F1;
• step 4) based on the data of C, filling in the regions with missing parts by generation of three-dimensional surface so as to obtain a set D of completed data of the object, without having to use an external database;
• and
• step 5) identify identifying the object based on the set D.