Endpoint fusing of freehand 3D object sketch with Hidden-part-draw

An endpoint fusing method is proposed for the projection of freehand 3D object sketch with Hidden-part-draw by variable coefficients tolerance. The endpoint fusing process are proposed for freehand 3D projection sketches with Hidden-part-draw and the precise positions of endpoints are finally obtained by integrating with the object 3D shape reconstruction. The method has been tested with a number of freehand projection sketches. The test results show that it achieves the regularization aim.