1. A method for generating a three-dimensional video stream by starting from a sequence of video images, said sequence comprising a first view (V 0 ), at least one second view (V 1 ) of a scene, as well as a depth map (D 0 ) of said first view (V 0 ), or a disparity map of said at least one second view (V 1 ) with respect to the first view (V 0 ), the method comprising, for one image: obtaining at least one occlusion image (O 1 ) comprising the occluded pixels of said second view (V 1 ) by starting from said depth map (D 0 ) or from said disparity map; generating a compacted occlusion image (OC 1 ) by spatially repositioning said occluded pixels of said at least one occlusion image (O 1 ), by moving said occluded pixels spatially closer to one another with respect to their positions in said occlusion image; said three-dimensional video stream comprising, for one image, said first view (V 0 ), said depth map (D 0 ) or said disparity map, and said at least one compacted occlusion image (OC 1 ), wherein said at least one compacted occlusion image (OC 1 ) of said at least one second view (V 1 ) is obtained by: determining at least one first occlusion map (OM 0 , 1 ) of at least one first estimated sequence (Vsyn 1 ) of said at least one second view (V 1 ) by starting from decoded values (Vdec 0 , Ddec 0 ) of said first view (V 0 ) or by starting from said first view (V 0 ) and from said depth map (D 0 ) corresponding to said first view (V 0 ), said first occlusion map (OM 0 , 1 ) comprising a representation of the positions of said occlusions; determining said at least one occlusion image (O 1 ) having values corresponding to those of said at least one second view (V 1 ) of the image in positions corresponding to those of the occlusions represented in said at least one first occlusion map (OM 0 , 1 ); determining a spatial compaction of said at least one occlusion image (O 1 ) for said positions corresponding to those of the occlusions represented in said at least one occlusion map (OM 0 , 1 ), thus obtaining said at least one compacted occlusion image (OC 1 ) of said at least one second view (V 1 ).