Abstract: Automated labeling can significantly improve practicability of the virtual assembly and virtual prototyping technology of complex products. To resolve the problems of real-time label layout for virtual assembly of complex products, the fast interactive label layout algorithms are presented. Through predefining label position, setting up the rules of label overlap elimination and dynamic adjustment of labeling, fast point-feature labeling placement and left-right-feature labeling placement for moving 3D objects of models are realized. The experiments show that this approach significantly increases readability of complex product models in the virtual assembly system, enhances the overall effectiveness of the simulation and improves the design and training efficiency.

Key words: computer application, automated labeling, label overlap elimination, virtual assembly, CRH train