Texture Mapping
In the software, you can map a picture on the corresponding 3D model. Depending on the data you have, there are two possibilities:
Use couples of points (points on the 3D mesh and points on the picture).
Use camera parameters (position, orientation, focal length, pixel size…).
If you do not know all the camera parameters (for example, you know the position but not the orientation), you can click reference points and enter the information you have; they will constrain the mapping.