Research On Some Key Problems Of Augmented Reality

Augmented reality (AR) is a new developing technology based on Virtual Reality (VR). It is a new technology that enhances the real world by superimposing computer-generated information.The main purpose of this paper is to design and implement a PC-based virtual studio system. The virtual studio system can combine the real world scene with 3-D graphs generated by computer in real-time. Currently, the commercial virtual studio system developed on the basis of independent workstation platform is too expensive for the middle or small-scaled television station to afford. Thus, it has a bright future to develop a low-cost and practical virtual studio system.This paper firstly discusses the part of video capture and control based on the DirectShow, and introduces the related principle and knowledge. Secondly, we discuss the design of virtual graphics system based on the Direct3D and the algorithm of simple background video keying technology. Finally, we design and implement the main system of virtual studio by analyzing the concrete realization of each function module, and make a deep research on the algorithm of anti-aliasing to solve the problem of image sawtooth in the video. According to the characteristics of the system and augmented reality technology, we develop this virtual studio system with visual C++6.0, DirectX9.0 SDK and OpenCV SDK, and achieve an expected experimental result.