METHOD AND APPARATUS FOR COMPRESSING TEXTURE INFORMATION OF THREE-DIMENSIONAL (3D) MODELS

摘要

A 3D model can be modeled using “pattern-instance?representation. To describe the vertices and triangles, properties of the instance, for example, texture, color, and normal, are adjusted to correspond to the order in the pattern. The texture of an instance is encoded depending on its similarity with the texture of a corresponding pattern. When instance texture is identical or almost identical to the pattern texture, the instance texture is not encoded and the pattern texture will be used to reconstruct the instance texture. When the instance texture is similar to the pattern texture, the instance texture is predictively encoded from the pattern texture, that is, the difference between the instance texture and pattern texture is encoded, and the instance texture is determined as a combination of the pattern texture and the difference.

主权项

1. A method for decoding a bitstream representing a 3D model, comprising:
determining from the bitstream whether an instance of a pattern uses a property of the pattern, the pattern being associated with a structure of the 3D model and the instance being represented as a transformation of the pattern; and determining a property of the instance in response to the property of the pattern, wherein the property of the instance corresponds to one of texture, texture coordinate, color, and normal.