METHOD FOR EXPRESSING IMAGE-BASED RENDERING INFORMATION IN THREE-DIMENSIONAL ENVIRONMENT

摘要

PURPOSE: A method for expressing image-based rendering information in a three-dimensional environment is provided to use GBT(Generalized Box Texture), LDI(Layered Depth Image), and octree in an MPEG-4 AFX(Animation Framework eXtension) by defining expressive methods of the GBT, LDI, and octree. CONSTITUTION: In a method for expressing an object in a three-dimensional environment by using an image-based rendering information in the three-dimensional environment, depth of an image and each point of the image is used. In the case that a cube including a model exists, the cube is expressed by nodes and divided into eight parts. The divided parts are managed as children nodes. The children nodes are repeatedly divided until the size of the nodes becomes sufficiently small by a method that the children nodes including the parts of the model are divided into eight parts, so that geometrical information is expressed.