A method of 3D mosaicing of a scene as a 3D mosaic, wherein at least one 3D reconstruction having been obtained without a priori information about the scene, in the course of the following steps of:acquisition of successive images by a panoramic sensor moving along an unconstrained 3D reconstruction trajectory, such that the image of at least one point of the scene is in at least 3 successive 2D panoramic images obtained according to various panoramic system-point of the scene directions,rectification of these images on different rectification planes covering different directions, and matching of the rectified images,3D reconstruction on reconstruction planes on the basis of the rectified matched images,the last 2D panoramic acquired image being called current 2D panoramic image,it further comprises the following steps:A) On the basis of the obtained 3D reconstruction and of the current 2D panoramic image, choosing one or more projection surfaces on which the mosaic will be constructed,B) Selecting sectors of the current 2D panoramic image, and selecting textures in the selected sectors by selecting visible parts that is to say that are not hidden by a surface of the scene, with the aid of the 3D reconstruction,C) Projecting the selected textures onto each projection surface and fusing the textures in each projection surface so as to thus obtain a conformal mosaic on each projection surface.