AVR theory, techniques and application

AVR (from actual reality to virtual reality) is a development of VR technique. In AVR, the objects in real world are virtualized directly from their shape information based on computer graphics and computer vision techniques, which provides the virtual environment with a higher level realism and preciseness. The basic theory and core techniques of AVR have been expounded in this paper. In order to achieve the integration of computer vision and computer graphics, superquadric-based model (SQ-based model) as the universal description of virtual objects is chosen and PAMVISION model providing a general framework for vision recognition and reconstruction in AVR modeling is developed. As the core techniques of AVR, two approaches for virtualizing the real objects from either 2D images or 3D data are implemented