Abstract: An image encoding device and a method, and an image decoding device and a method that are designed to improve encoding efficiency in IntraBC. A screen is divided into four slices (Slices #0 through #3). In a case where reference to a different slice is prohibited, the range that can be referred to from the current CTU in Slice #2 is only the decoded portion in Slice #2, and therefore, any block in Slice #1 cannot be referred to, for example. In the case of the present technology, on the other hand, decoded different slices (Slice #0 and Slice #1) are included in the referable range, and accordingly, a block in Slice #1 can be referred to from the current CTU in Slice #2.

Abstract: The present disclosure relates to an image processing apparatus and an image processing method capable of suppressing a reduction in encoding efficiency. A bit stream is generated which contains: information indicating a correspondence relation between at least one of a geometry image obtained by projecting position information regarding 3D data representing a three-dimensional structure onto a two-dimensional plane or a texture image obtained by projecting attribute information regarding the 3D data onto a two-dimensional plane, and an occupancy map that is map information indicating whether or not data is present at each position; and encoded data regarding the geometry image, encoded data regarding the texture image, and encoded data regarding the occupancy map. The present disclosure is applicable to, for example, an information processing apparatus, an image processing apparatus, an electronic apparatus, an information processing method, a program, and the like.

Abstract: The present technology relates to a decoding device and a decoding method, and an encoding device and an encoding method that enable images that configure a packed image to be reliably displayed when an encoded stream is decoded and displayed. A decoding unit decodes an encoded data, the encoded data being an encoded packed image in which a plurality of images is packed, and generates the packed image. A display control unit identifies the images that configure the packed image based on packing SEI preferentially used when the packed image is displayed. The present technology can be applied to a decoding device, for example.

Abstract: Aspects of the present disclosure provide an image processing device that includes circuitry configured to perform a decoding process on an encoded stream for generating an image. The encoded stream is arranged into largest coding units (LCUs), and filtering parameters applicable to each LCU are provided at a beginning portion of the corresponding LCU. The circuitry is further configured to perform adaptive offset filtering on portions of the image that correspond to the LCUs using the filtering parameters set at the beginning portions of the LCUs, respectively.

Abstract: Aspects of the present disclosure provide an image processing device that includes circuitry configured to perform a decoding process on an encoded stream for generating an image. The encoded stream is arranged into largest coding units (LCUs), and filtering parameters applicable to each LCU are provided at a beginning portion of the corresponding LCU. The circuitry is further configured to perform adaptive offset filtering on portions of the image that correspond to the LCUs using the filtering parameters set at the beginning portions of the LCUs, respectively.

Abstract: There is provided an image processing apparatus and an image processing method that are capable of suppressing an increase in loads when a point cloud is generated from a mesh. Point cloud data is generated by positioning points at intersection points between a surface of a mesh and vectors each including, as a start origin, position coordinates corresponding to a specified resolution. For example, intersection determination is performed between the surface of the mesh and each of the vectors, and in a case where the surface and the vector are determined to intersect each other, the coordinates of the intersection point are calculated. The present disclosure can be applied to an image processing apparatus, electronic equipment, an image processing method, a program, or the like.

Abstract: There is provided an information processing device and method capable of suppressing a reduction in encoding efficiency. When performing, for attribute information of each point of a point cloud that represents an object having a three-dimensional shape as a set of points, hierarchization of the attribute information by recursively repeating classification of a prediction point for deriving a difference value between the attribute information and a predicted value of the attribute information and a reference point used for deriving the predicted value with respect to the reference point, the reference point is set on the basis of a centroid of points. The present disclosure can be applied to, for example, an information processing device, an image processing device, an encoding device, a decoding device, an electronic device, an information processing method, a program, and the like.

Abstract: The present disclosure relates to an information processing apparatus and a method capable of controlling the number of the points to be obtained by decoding. A bitstream is generated, the bitstream including encoded data of 3D data having a plane expressing points in a point cloud that expresses a three-dimensional object as a set of the points, and control information for controlling the number of the points to be derived from the 3D data to be obtained by decoding the encoded data. The present disclosure can be applied to an information processing apparatus, an image processing apparatus, an encoding device, a decoding device, an electronic apparatus, an information processing method, a program, or the like, for example.

Abstract: The present disclosure relates to an information processing apparatus and an information processing method that are capable of distributing higher-quality G-PCC streams. When G-PCC streams obtained by encoding Point Cloud data according to G-PCC are generated, there are generated spatial positional information indicating spatial positions of respective pieces of partial Point Cloud data that represent individual parts into which the Point Cloud data is segmented, and grouping information that groups the partial Point Cloud data. The present technology is applicable to a generating apparatus that generates G-PCC streams, for example.

Abstract: There is provided an information processing apparatus and an information processing method that can enhance the image quality while, at the same time, reducing increase in client's throughput. Image data of a plurality of projection directions is generated by projecting 3D data in a plurality of projection directions and converting the 3D data into two-dimensional data, and projection direction information indicating the projection direction of each piece of the image data is generated as projection metadata. Further, the projection direction information includes additional projection direction identification information that indicates that the image data has been generated by projection in additional projection directions. The present technology is applicable, for example, to a data generation apparatus that generates data for delivering a point cloud.

Abstract: The present disclosure relates to an information processing apparatus and an information processing method that enable processing to be performed simply, and a program. By converting a point cloud representing a three-dimensional structure into two dimensions, a geometry image and a texture image, and three-dimensional information metadata required for constructing the geometry image and the texture image in three dimensions are obtained. Then, one PC sample included in a Point Cloud displayed at a specific time is generated by storing the geometry image, the texture image, and the three-dimensional information metadata in accordance with a playback order required at a time of reproducing and playing back the geometry image and the texture image in three dimensions on the basis of the three-dimensional information metadata. It is possible to apply to a data generation device that generates data for distribution of a Point Cloud.

Abstract: The present disclosure relates to an information processing apparatus and method for reducing a decrease in coding efficiency. The information processing apparatus encodes information regarding the luminance of a point corresponding to the lowest hierarchical level in hierarchized geometry data, and information regarding the color of a point corresponding to a predetermined hierarchical level higher than the lowest hierarchical level in the geometry data, in a point cloud expressing a three-dimensional object as a set of points. The present disclosure can be applied to an information processing apparatus, an image processing apparatus, an encoding device, a decoding device, an electronic apparatus, an information processing method, a program, or the like, for example.

Abstract: The present disclosure relates to information processing apparatus and method that makes it possible to suppress a reduction in encoding efficiency. Information relating to quantization of a three-dimensional position of an encoding target is generated. For example, the information relating to the quantization includes information relating to a coordinate system to be subjected to the quantization, information relating to a bounding box for normalization of position information of the encoding target, or information relating to a voxel for quantization of position information of the encoding target. In addition, three-dimensional information of the encoding target is restored from a signal string on the basis of the information relating to the quantization of the three-dimensional position of the encoding target.

Abstract: The present disclosure relates to an information processing device and a method capable of suppressing a reduction in encoding efficiency of point cloud data. As for a point cloud representing an object having a three-dimensional shape as a point group, position information of a point to be processed is predicted on the basis of position information of a reference point, position information of a prediction point is generated, a difference between the generated position information of the prediction point and the position information of the point to be processed is derived, the derived difference is encoded, and a bitstream is generated. 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: The present disclosure relates to an information processing apparatus and a method for achieving scalability of the number of points in point cloud data. Encoded data of a point cloud representing a three-dimensional object as a point group is decoded, a tree structure using the positional information about the respective points constituting the point cloud is generated, and the number of nodes corresponding to the depth of the level of detail is selected for some or all of the levels of detail constituting the tree structure. The present disclosure can be applied to an information processing apparatus, an electronic apparatus, an information processing method, a program, or the like, for example.

Abstract: There is provided an information processing apparatus and an information processing method that can enhance the image quality while, at the same time, reducing increase in client's throughput. Image data of a plurality of projection directions is generated by projecting 3D data in a plurality of projection directions and converting the 3D data into two-dimensional data, and projection direction information indicating the projection direction of each piece of the image data is generated as projection metadata. Further, the projection direction information includes additional projection direction identification information that indicates that the image data has been generated by projection in additional projection directions. The present technology is applicable, for example, to a data generation apparatus that generates data for delivering a point cloud.

Abstract: The present disclosure relates to an information processing apparatus and a method that allows for suppression of a decrease in encoding efficiency. In comparison of voxel data resulting from quantization of point cloud data, a correlation degree of a distribution pattern between voxel data to be compared is calculated on the basis of a subjective feature of the distribution pattern of values of the voxel data. The present disclosure is applicable to an information processing apparatus, an image processing apparatus, an electronic device, an information processing method, a program, or the like, for example.

Abstract: The present disclosure provides an information processing apparatus, information processing method, reproduction processing apparatus, and reproduction processing method, capable of providing a viewing experience that meets the viewer's requests. An encoding unit (121) encodes point cloud data in such a way as to have a phased hierarchical structure corresponding to a level of detail (LoD) indicating a level of quality to generate a bitstream being constituted of a data region including one or more geometry slices. A metadata generation unit (125) generates partial slice-specific information being used for specifying a correspondence of the LoD to a partial slice used as a partial region corresponding to the LoD in the geometry slice. A file creation unit (126) creates a file including the partial slice-specific information.

Abstract: There is provided an image processing apparatus and a method designed to be capable of reducing degradation of the subjective quality of a point cloud. Encoded data of a frame image in which a projection image of a point cloud representing a three-dimensional object as a set of points on a two-dimensional plane is placed is decoded, the frame image obtained by decoding the encoded data is unpacked to extract the projection image, and the respective points included in the extracted projection image are arranged in a three-dimensional space. When the coordinates of a point are not integer values in a basic coordinate system that is a predetermined coordinate system of the three-dimensional space, the point is moved in a direction perpendicular to the two-dimensional plane so that the coordinates of the point become integer values. Thus, the point cloud is reconstructed.

Abstract: There is provided an information processing device and method capable of inhibiting deterioration in encoding efficiency. Attribute information of a point cloud in which 3-dimensional shaped objects are expressed as a set of points is hierarchized to generate a reference relation of the attribute information between layers, and the attribute information of a layer in the layer of the generated attribute information is sub-hierarchized to generate a reference relation of the attribute information between sub-layers. The present disclosure can be applied to, for example, an information processing device, an image processing device, an encoding device, a decoding device, an electronic device, an information processing method, a program, or the like.