VR空間でのビデオ映像の連動マッピングに関する一考察

抄録

Recently, a virtual reality (VR) technology is used in various fields and makes it possible to represent various objects as three-dimensional computer graphics (CG) and to walk freely through the virtual three-dimensional space. If all of the complicated CG objects are placed in the virtual three-dimensional space, a very long processing time is required for drawing, making it impossible to walk through smoothly. The models used in such a CG are represented with only the surface shape of the objects defined. Therefore, it is impossible to show the internal structure of an object and the view of an optional cross section. The volume graphics technology that represents the inside of an object with graphic models is used to produce and display the contents and crosssectional view of an object. If volume graphics are used, enormous amounts of data must be calculated, making it impossible to produce real-time images. We have developed the technology that places the high-accuracy video images of the inside of an object on top of each other and displays those video images linked to the background CG models. These high-accuracy video images are produced in the virtual three-dimensional space using volume graphics. The technology makes it possible to walk through the virtual three-dimensional space with CG and video images mixed freely. This technology also makes it easy to produce walk-through type VR contents in the educational field such as science and medical care where real images are required.