Abstract: This paper presented a method of 3D reconstruction based on given axonometric sketching to realize 3D reconstruction of planar object conveniently．Firstly,according to the outline information of the patch organization of axonometric sketching,it establishes the relationship between all patches by interactive designated father-face．Secondly,it resolves the father-face of axonometric sketching by projection inverse transformation．Last,it rotates the child-faces around the edge linked to the father-face,and calculates them categorically when the area of the tridimensional reaches the maximum,generates the accurate target shape．The key technology and test drawings of the method realized by Matlab were given in this paper．The experiment results prove that the proposed method realizes 3D reconstruction of axono-metric sketching of general planar object with a certain availability and practicality.

Key words: Axonometric sketching,3D reconstruction,Sketch recognition,Projection transformation,Planar object