Samsung Electronics Co., Ltd.

Gyeongja Jang

Mahnjin Han

Shinjun Lee

Dokyoon Kim

Keunho Kim

Shinlun Lee

A depth image-based representation (DIBR) method of modeling a 3-dimensional (3D) object, by which the 3D object is expressed by depth information, color information, and camera parameters or geometry information, color information, and camera parameters. The camera parameters include position, orientation, ranges of camera view or angle (fieldOfView), front and back of a camera volume (nearPlane and farPlane) and projection information(orthographic) on whether an object is projected on a camera orthographically or perspectively, and, when at least one of modeling and rendering of a 3D object is performed, values of the camera parameters are changed in real time.

Depth image-based representation method for 3D object, modeling method and apparatus, and rendering method and apparatus using the same

A schema and style sheets for DIBR data are provided. The schema includes: a BitWrapper node schema used for graphics data compression; and a DepthImage node schema, which is used for depthimage-based model rendering, includes camera information and texture information having a depth information, defines diTexture as an element including SFDepthtextureNode as a model group, wherein the BitWrapper node schema includes: a node element, which contains graphics data including data to be compressed and refers to SFWorldNode as a subelement; a BitWrapperEncodingParameter element; and three attributes having the names type, url, and buffer and the types SFInt32, MFUrI, and SFString, respectively. The schema and style sheets allow an author to easily control the representation and compression of DIBR when authoring 3D contents and to easily generate an input file for an MPEG-4 encoder.

Growing community of inventors

Yongin-si, South Korea

Gyeongja Jang