Line Drawing Labeling Theory And Methods

Recovering the 3-D scenes from the projected image or the drawing is an important problem in computational vision . The three sources of information the obtained 3-D scene are the range image ,the pixel bright image and line drawing. Recovering the 3-D scene from the range image,the pixel brightness image and line drawing , a number of research works have been done. It refer to the application CAD and computer graphy, and so on. The labels of the line drawing as an efficient aidded method is take part in recovering the 3-D scene from the line drawing. Many impossible configurations can be excluded by consistent labeling. So it can reduce work load in quantity-analysize. This paper have analysised the current theories and method of labeling on the polyhedron. A few of new labels on the forms of junctions have been on the polyhedron . By analysising special the hiddden line drawing of the special curve object ,we have received a few of new junctions. So the junctions are completed. The labeling line ddrawing can be operated automatically by computer.