Information processing device and method

An information processing method comprising:

• encoding meta information including vertex information with a first granularity which indicates coordinates of vertices of a mesh representing an object having a three-dimensional structure, and generating encoded data of the meta information;
• encoding a geometry image with a second granularity set independently of the first granularity in which a plurality of patches obtained by dividing a geometry of the mesh is arranged, and generating encoded data of the geometry image;
• encoding a texture image with a third granularity set independently of the first granularity in which a plurality of patches obtained by dividing a texture of the mesh is arranged, and generating encoded data of the texture image;
• and
• providing the encoded data of the meta information, the encoded data of the geometry image, and the encoded data of the texture image.

An information processing device comprising:

• an acquisition unit that acquires, from a bitstream of a mesh representing an object having a three-dimensional structure, encoded data of meta information including vertex information with a first granularity which indicates coordinates of vertices of the mesh, encoded data of a geometry image with a second granularity set independently of the first granularity in which a plurality of patches obtained by dividing a geometry of the mesh is arranged, and a texture image with a third granularity set independently of the first granularity in which a plurality of patches obtained by dividing a texture of the mesh is arranged;
• a meta information decoding unit that decodes the encoded data of the meta information and generates the meta information including the vertex information with the first granularity;
• a geometry image decoding unit that decodes the encoded data of the geometry image with the second granularity and generates the geometry image with the second granularity;
• and
• a texture image decoding unit that decodes the encoded data of the texture image with the third granularity and generates the texture image with the third granularity.

An information processing method comprising:

• acquiring, from a bitstream of a mesh representing an object having a three-dimensional structure, encoded data of meta information including vertex information with a first granularity which indicates coordinates of vertices of the mesh, encoded data of a geometry image with a second granularity set independently of the first granularity in which a plurality of patches obtained by dividing a geometry of the mesh is arranged, and a texture image with a third granularity set independently of the first granularity in which a plurality of patches obtained by dividing a texture of the mesh is arranged;
• decoding the encoded data of the meta information and generating the meta information including the vertex information with the first granularity;
• decoding the encoded data of the geometry image with the second granularity and generating the geometry image with the second granularity;
• and
• decoding the encoded data of the texture image with the third granularity and generating the texture image with the third granularity.