Abstract: There is provided an information processing device and method capable of independently controlling granularities of UV coordinates and vertex positions. Meta information including vertex information with a first granularity which indicates coordinates of vertices of a mesh is encoded, a geometry image with a second granularity of the mesh is encoded, a texture image with a third granularity of the mesh is encoded, and encoded data of the meta information, encoded data of the geometry image, and encoded data of the texture image are provided. The present disclosure may be applied to, for example, an information processing device, an electronic device, an information processing method, a program, or the like.

Abstract: There is provided an information processing device and method that can mitigate a reduction in the quality of 3D data due to encoding and decoding. A bitstream is decoded, the bitstream having been obtained by dividing a mesh that represents an object with a three-dimensional structure into at least a first patch and a second patch, placing the first patch and the second patch within a single image, and encoding the single image. A boundary correction process is executed to correct a geometry for a boundary vertex located at a boundary of the patches decoded. The boundary vertex subjected to the boundary correction process is set as a reference point, and a smoothing process is executed to smooth a geometry for a vertex within a partial area based on the reference point. The present disclosure may be applied to, for example, an information processing device, an electronic device, an information processing method, a program, or the like.

Abstract: There is provided an information processing apparatus, an electronic device, an information processing method, and a program capable of suppressing a reduction in quality of attribute information of 3D data. A geometry image and an occupancy image are generated by arranging a plurality of vertices on a two-dimensional plane so as to correspond to a UV map on the basis of position information of the plurality of vertices of a polygon and the UV map indicating a correspondence relationship between the plurality of vertices and a texture of the polygon, and the UV map, connection information indicating a connection relationship between the plurality of vertices, the geometry image, the occupancy image, and the texture of the polygon are encoded.

Abstract: There is provided an information processing apparatus, an electronic device, an information processing method, and a program capable of suppressing reduction in encoding efficiency. At least some of internal vertices which are vertices of a mesh representing an object having a three-dimensional structure and positioned other than the boundary of a patch of a geometry are deleted, vertex connection information indicating the vertices of the mesh and connections between the vertices is generated, and the vertex connection information is encoded.

Abstract: There is provided an information processing apparatus and method capable of suppressing a reduction in the quality of 3D data due to encoding and decoding. By dividing a mesh representing an object having a three-dimensional structure into patches, pair information indicating a pair constituted by a single vertex of the mesh or a plurality of vertices of a patch generated from a plurality of vertices at the same position is generated, and the generated pair information is encoded. The present disclosure may be applied to, for example, an information processing apparatus, an electronic device, an information processing method, a program or the like.

Abstract: There is provided an image processing device and method capable of suppressing an increase in the amount of coding. A spraying attribute projection image, which is used for spraying for adding an attribute to a geometry in the reconstruction of 3D data in a three-dimensional space, is generated by projecting an attribute of 3D data representing an object in a three-dimensional shape onto a two-dimensional plane independently of the projection of the geometry of the 3D data onto the two-dimensional plane, and coding is performed on a frame image in which the spraying attribute projection image is disposed. The present disclosure can be applied to, for example, an image processing device, an electronic device, an image processing method, or a program or the like.

Abstract: There is provided an image processing device and a method that enables the number of attributes corresponding to a single geometry to be variable in a time direction. An attribute video frame that is a video frame in which a patch obtained by projecting each of a plurality of attributes to a two-dimensional plane for each partial region is arranged is generated, the plurality of attributes corresponding to a single geometry of a point cloud that expresses an object with a three-dimensional shape as a group of points, the generated attribute video frame for each attribute is coded, and attribute information that is information indicating the generated attribute video frames corresponding to the same timing is generated. The present disclosure can be applied to, for example, an image processing device, electronic equipment, an image processing method, a program, or the like.

Abstract: There is provided an image processing device and method capable of suppressing an increase in amount of code. For example, a patch generation parameter used in patch generation processing for generating a patch of an attribute serving as a processing target by referring to an attribute different from the attribute serving as the processing target is derived for some of a plurality of attributes corresponding to single geometry of a point cloud that expresses an object having a three-dimensional shape as a set of points, the derived patch generation parameter is encoded, and an attribute video frame in which a base patch representing a base attribute that is an attribute different from some of the plurality of attributes has been arranged is encoded. The present disclosure can be applied to, for example, an image processing device, an electronic device, an image processing method, or a program.

Abstract: There is provided an image processing apparatus and method, electronic device, and program enabling suppression of deterioration of image quality. A base video frame is generated in which a base patch is arranged, the base patch being obtained by projecting, on a two-dimensional plane for each partial region, a point cloud representing an object having a three-dimensional shape as a set of points, and an additional video frame is generated in which an additional patch is arranged, the additional patch being obtained by projecting, on the two-dimensional plane same as in a case of the base patch, a partial region including at least a part of the partial region corresponding to the base patch of the point cloud, with at least some of parameters made different from a case of the base patch. By encoding the generated base video frame and additional video frame, coded data is generated.

Abstract: There is provided an image processing apparatus and a method that enable suppression of an increase in load of decoding of a point cloud. Auxiliary patch information being information regarding a patch obtained by projecting a point cloud representing a three-dimensional shaped object as an aggregate of points, onto a two-dimensional plane for each partial region is generated in such a manner as to correspond to all of a plurality of frames included in a predetermined section in a time direction of the point cloud, a patch is generated using the generated auxiliary patch information for each frame in the section, and a frame image in which the generated patch is arranged is encoded. The present disclosure can be applied to, for example, an image processing apparatus, an electronic device, an image processing method, a program, or the like.