Graphics user Interfaces (GUIs) dominates the human-computer interaction (HCI) for some time

and has made that common people can use computer. However

in order to accommodate a wider range of applications

HCI needs to move toward interfaces that are natural

intuitive

adaptive

and unobtrusive. Perception User Interfaces (PUIs) is to implement this natural interaction and becomes a new focus in HCI. This paper first describes the emerging PUI field and the Vision Base Interface (VBI) which is a most important branch in PUI field. Then it expounds two methods which can realize VBI in real time:head locating which detect the position of head motion

hand tracking which fuse color information and motion information to control virtual object. At last it puts forward that not only visual method needs multi-channel information fusion so as to actualize good PUIs

but also PUIs needs many field (speech

haptic) fusion. Experiments show that Vision-Based PUI (VBPUI) can get better precision and real time utility and is a good method in HCI.