Construction of Feature-Matching Perception in Virtual Assembly

An important characteristic of virtual assembly isinteraction. Traditional direct manipulation in virtual assembly relieson dynamic collision detection, which is very time-consuming and evenimpossible in desktop virtual assembly environment. Feature-matching isa critical process in harmonious virtual assembly, and is the premiseof assembly constraint sensing. This paper puts forward an activeobject-based feature-matching perception mechanism and afeature-matching interactive computing process, both of which make thedirect manipulation in virtual assembly break away from collisiondetection. They also help to enhance virtual environmentunderstandability of user intention and promote interactionperformance. Experimental results show that this perception mechanismcan ensure that users achieve real-time direct manipulation in desktopvirtual environment.