抄録
Virtual Reality technology has been studied actively because of its remarkable merits, such as user's interaction to contents and sense of high immersion, which are not provided with other information media so far. However, high cost of contents producing and low reality of contents reflection are considered as problems. To remove these, an approach, Image-based Rendering, has been proposed, which utilizes real photograph directly to construct a 3D virtual space instead of geometry modeling. But this approach can not be available for industrial use, such as visual or engineering design, because this approach aims at walk-through observation to virtual spaces mainly. Accordingly, we studied a new technique which is based on the geometry modeling with merits of the Image-based Rendering, that is, high reality and low cost of producing. This technique consists of following sequence. At first, user assumes a hexahedron in a real indoor space. Second, user takes six photographs corresponding to inner surface of the hexahedron. Finally computer process with some simple user operation generates a 3D virtual space from these photographs semi-automatically. We examined our technique by error evaluation of calculated sizes and image quality, and also tried to apply it to our virtual reality software, the elevator renovation sales assistance system.
