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 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.

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: An inkjet recording medium having a recording layer including a pigment and a polyvinyl alcohol on an air-permeable support, wherein inkjet recording medium is made by coating a treatment solution on the recording layer, wherein the treatment solution has the action of solidifying the polyvinyl alcohol in the recording layer when it is in the wet state, and then bringing the recording layer into pressure contact with a heated mirror surface while it is still wet. This treatment solution is a mixed solution of borate/boric acid, wherein the blending ratio of the borate and boric acid in the treatment solution is 0.25/1 to 2/1 by weight ratio.

Abstract: An inkjet recording medium having a recording layer comprising a pigment and a polyvinyl alcohol on a porous support, wherein a treatment solution having the action of solidifying the polyvinyl alcohol in the recording layer when it is in the wet state is coated thereupon, and the recording layer is then brought into pressure contact with a heated mirror surface while it is still wet. This treatment solution is a mixed solution of a borate/boric acid.

Abstract: Provided is an ink jet recording paper having an ink receiving layer comprising a high absorption pigment and a binder provided on at least one side of a base paper comprising wood pulp and a filler, with the ink receiving layer having a coverage rate of from 0.5 to 5.0 g/m.sup.2 per side of the base paper and a contact angle of from 80 to 100 degrees measured using a liquid having a surface tension of 40 dyne/cm.

Abstract: Provided are a both-sided recording paper for ink jet recording which has coated layers comprising a pigment and a water-base binder on both sides of a base paper made from pulp slurry comprising a filler and an internal sizing agent; with the coated layers having a per side coverage of from 0.5 to 4.0 g/m.sup.2, on a solids basis, and with the base paper having a basis weight of from 50 to 180 g/m.sup.2, a total filler content within the range of 3 to 20 weight %, and a difference in filler content between surface layers extending to 30 .mu.m below the front and rear surfaces of the base paper respectively within the range of 0 to 30% of the average value of filler contents in the surface layers: and a method of preparing the aforementioned both-sided recording paper.

Abstract: A recording paper having a recording layer comprising synthetic silica and an aqueous binder as its principal components, said layer being formed on at least one surface of a base paper and the amount of said layer lying within the range of 0.5-4.0 g/m.sup.2 in terms of solids on each surface on which said layer is formed, wherein either the critical surface tension of said recording layer surface (.gamma..sub.c) lies within the limits 32.ltoreq..gamma..sub.c.ltoreq. 42 dyne/cm or the contact angle measured using water lies in the range of 100.degree.-120.degree., or alternatively, the critical surface tension of said recording layer surface (.gamma..sub.c) lies within the limits 32.ltoreq..gamma..sub.c.ltoreq. 42 dyne/cm and the contact angle measured using water lies in the range of 100.degree.-120.degree. is disclosed.