Abstract: There is provided an information processing apparatus and method which enable an increase in a load of decoding processing of coded data of a point cloud to be suppressed. Positional information of a point cloud expressing an object with a three-dimensional shape as a set of points is encoded in an order which causes a decoding result of coded data of the positional information to be output in a processing order of attribute information of the point cloud, and coded data thereof is generated. In addition, coded data of positional information of a point cloud expressing an object with a three-dimensional shape as a set of points is decoded and a decoding result thereof is to be output in a processing order of attribute information of the point cloud. For example, the present disclosure can be applied to an information processing apparatus, an image processing apparatus, a coding apparatus, a decoding apparatus, 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: 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: 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 to make it possible to reduce a decrease in encoding efficiency. A predictive residual that is a difference between a reflected light intensity that is attribute data of a point cloud representing an object having a three-dimensional shape as a set of points and a predicted value of the reflected light intensity generated by using a reflection model of light on a surface of the object is generated by decoding encoded data of the predictive residual, a coefficient of the reflection model is derived, a predicted value is derived by performing prediction processing by using the reflection model and the coefficient, and the reflected light intensity is generated by adding the predictive residual obtained by decoding the encoded data and the derived predicted value. The present disclosure can be applied to, for example, an information processing apparatus, an electronic device, an image processing method, a program or the like.

Abstract: The present disclosure relates to an image processing apparatus and an image processing method that are capable of improving coding efficiency at the time when a prediction using a correlation within a screen is performed. A predicted vector generation section sets, at a time of encoding of a current motion vector of a current block for a prediction using a correlation within a screen, a candidate block to not available and generates a predicted vector of the current motion vector by using a reference motion vector, the reference motion vector being referred to when the predicted vector of the current motion vector is generated. A difference vector generation section generates a difference vector between the current motion vector and the predicted vector generated by the predicted vector generation section. The present disclosure can be applied to, for example, an encoding apparatus.

Abstract: There is provided an image processing device and a method that enable partial decoding of 3D data to be performed more easily. Management information of a block as a partial region in a predetermined three-dimensional spatial region including 3D data representing a three-dimensional structure is generated. In addition, a block satisfying a condition specified by a user is selected on the basis of management information of the block as a partial region in a predetermined three-dimensional spatial region including 3D data representing a three-dimensional structure, and coded data of the 3D data within the selected block is decoded. The present disclosure can be applied to, for example, an image processing device, an electronic apparatus, an image processing method, a program, or the like.

Abstract: The present disclosure relates to an information processing device and method capable of suppressing a reduction in coding efficiency. For a point cloud representing a three-dimensional object as a set of points, a coordinate system for geometry data is transformed from a polar coordinate system to a Cartesian coordinate system, a reference relationship indicating a reference destination used to calculate a predictive value of attribute data of a processing target point is set by using the generated geometry data in the Cartesian coordinate system, a prediction residual that is a difference value between the attribute data of the processing target point and the predictive value calculated based on the set reference relationship is calculated, and the calculated prediction residual is encoded. The present disclosure can be applied to, for example, an information processing device, an encoding device, a decoding device, an electronic device, an information processing method, or a program.

Abstract: There is provided an information processing apparatus and method which enable an increase in a load of decoding processing of coded data of a point cloud to be suppressed. Positional information of a point cloud expressing an object with a three-dimensional shape as a set of points is encoded in an order which causes a decoding result of coded data of the positional information to be output in a processing order of attribute information of the point cloud, and coded data thereof is generated. In addition, coded data of positional information of a point cloud expressing an object with a three-dimensional shape as a set of points is decoded and a decoding result thereof is to be output in a processing order of attribute information of the point cloud. For example, the present disclosure can be applied to an information processing apparatus, an image processing apparatus, a coding apparatus, a decoding apparatus, an electronic device, an information processing method, a program, or the like.

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: 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: The present disclosure relates to an image processing apparatus and an image processing method that are capable of improving coding efficiency at the time when a prediction using a correlation within a screen is performed. A predicted vector generation section sets, at a time of encoding of a current motion vector of a current block for a prediction using a correlation within a screen, a candidate block to not available and generates a predicted vector of the current motion vector by using a reference motion vector, the reference motion vector being referred to when the predicted vector of the current motion vector is generated. A difference vector generation section generates a difference vector between the current motion vector and the predicted vector generated by the predicted vector generation section. The present disclosure can be applied to, for example, an encoding apparatus.

Abstract: The present disclosure relates to an image processing device and method that enable suppression of an increase in the amount of coding of a quantization matrix. An image processing device of the present disclosure includes an up-conversion unit configured to up-convert a quantization matrix limited to a size less than or equal to a transmission size that is a maximum size allowed for transmission, from the transmission size to a size that is identical to a block size that is a processing unit of quantization or dequantization. The present disclosure is applicable to, for example, an image processing device for processing image data.

Abstract: There is provided an information processing apparatus, an image processing apparatus, an encoding device, a decoding device, an information processing method, and a program that facilitate scalable decoding of attribute information. Regarding the attribute information about a point cloud representing a three-dimensional object, a process of classifying the respective points of the point cloud into prediction points that are the points at which difference values between the attribute information and predicted values are left, and reference points that are the points at which the attribute information is referred to during derivation of the predicted values is recursively repeated on the reference points, so that the attribute information is hierarchized.

Abstract: The present disclosure relates to an image processing apparatus and an image processing method each capable of reducing image quality deterioration. A connection component constituted by points that are included in a point group representing a three-dimensional structure, located adjacent to each other, and projected in an identical direction is projected on a two-dimensional plane in a plurality of directions to generate patches in the respective directions. A frame image where the generated patches in the respective directions are arranged is coded. For example, the present disclosure is applicable to an information processing apparatus, an image processing apparatus, an electronic apparatus, an information processing method, a program, or the like.

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: 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: The present disclosure relates to an image processing apparatus and a method that enable decoding of encoded data of an octree in various processing orders. The octree corresponding to point cloud data is encoded after the context is initialized for each layer of the octree. Further, a breadth-first order or a depth-first order is selected as the decoding order for the encoded data of the octree corresponding to point cloud data, and the encoded data is decoded in the selected decoding order. The present disclosure can be applied to an image processing apparatus, an electronic apparatus, an image processing method, a program, or the like, for example.

Abstract: The present disclosure relates to image processing apparatus and method that can prevent a reduction in image quality. Geometry data that is a frame image having arranged thereon a projected image obtained by projecting 3D data representing a three-dimensional structure on a two-dimensional plane and includes a special value indicating occupancy map information in a range is generated. The generated geometry data is encoded. Further, the encoded data on the geometry data is decoded, and a depth value indicating a position of the 3D data and the occupancy map information are extracted from the decoded geometry data. The present disclosure is applicable to, for example, an information processing apparatus, an image processing apparatus, electronic equipment, an information processing method, or a program.

Abstract: There is provided an information processing apparatus, an image processing apparatus, an encoding device, a decoding device, an information processing method, and a program that facilitate scalable decoding of attribute information. Regarding the attribute information about a point cloud representing a three-dimensional object, a process of classifying the respective points of the point cloud into prediction points that are the points at which difference values between the attribute information and predicted values are left, and reference points that are the points at which the attribute information is referred to during derivation of the predicted values is recursively repeated on the reference points, so that the attribute information is hierarchized.