User Attention Aware Dynamic Visualization of Assembly Models

To illustrate the spatial relationship of all parts in a complex model and demonstrate the hierarchical assembly constraints among them,we present a novel system allowing users to interactively visualize the assembly models.The system records the disassembly sequence of the model as a hierarchical directional disassembly graph by creating the interference matrix and the directional disassembly graph recursively.Each vertex in the assembly constraint graph is represented as an image of the corresponding part,enabling the users to select the interested part intuitively.The focus+context method is employed to display the assembly constraint graph,user interested part is always placed at the center of the view and magnified automatically.Besides,we assign a different color for each part based on user attention so as to enhance the assembly relationship with color contrasts.Experimental results show that our system can effectively improve user interaction and assembly efficiency.