A Study On Virtual Videoconferencing System Based On Augmented Reality

At present, the technology on Network Videoconferencing System (NVS) is becoming more and more full-blown and has applied to many fields in our lives. However, the defects of the traditional NVS are obvious in some special applications with the requirements of high quality 3D effects and flexible operability on research models. Besides, Augmented Reality Technology (ART) is also developing quickly and many results have been attained.Targeting the shortage of reality and third-dimension effects in the traditional NVS, the thesis proposes an idea to design a NVS on the basis of ART.The framework of NVS based on AR is briefed at the beginning of this thesis. Then the principle and mathematical reasoning process of ART's each stage is discussed, including image partition and processing, 3D registration algorithm, virtual model output and rendering. The 3D algorithm is improved as a result. In the following part, the thesis explains the structure of NVS protocol suite in detail, analyzes the MCU strategy in depth and makes decisions as well as proposes related improvement methods according to the NVS'characteristics. At the end of the thesis, a system on the base of H.323 criterion's MCU strategy and 3D registration algorithm based on vision is designed. The system combines ART with network technology and makes up for the defects and improves the validity of network videoconference.