Trilinear parameters can be analytically altered to simulate a change of focal length or a geometrical 3D displacement  of the camera relative to the reconstructed view (as shown in table 1). In this way, new unknown points of view can be synthesized. Only some synthesis steps are required to simulate human motions and changes of current point of view, whereas the analysis step remains unchanges. The process speed only depends on the number of nodes in th e initial meshes. New views can be therefore virtualized in real time from well-adapted and relevant meshes, depending on the 3D scene complexity.