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公开(公告)号：US11995873B2
公开(公告)日：2024-05-28
申请号：US17309798
申请日：2019-12-13
发明人： Satoru Kuma , Ohji Nakagami , Koji Yano , Tsuyoshi Kato
IPC分类号： G06T9/00 , G06T7/50 , H04N19/172 , H04N19/597
CPC分类号： G06T9/001 , G06T7/50 , H04N19/172 , H04N19/597 , G06T2207/10028
摘要： 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.
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公开(公告)号：US12073596B2
公开(公告)日：2024-08-27
申请号：US17625940
申请日：2020-07-06
发明人： Ohji Nakagami , Koji Yano , Satoru Kuma , Hiroyuki Yasuda , Tsuyoshi Kato
IPC分类号： G06T9/40
CPC分类号： G06T9/40
摘要： 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.
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公开(公告)号：US11943457B2
公开(公告)日：2024-03-26
申请号：US17438269
申请日：2020-03-05
发明人： Tsuyoshi Kato , Satoru Kuma , Ohji Nakagami , Hiroyuki Yasuda , Koji Yano
IPC分类号： H04N19/30 , H04N19/124 , H04N19/169 , H04N19/50
CPC分类号： H04N19/30 , H04N19/124 , H04N19/1883 , H04N19/50
摘要： 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. At the time of the hierarchization, the prediction points are selected so that points also exist in voxels of the hierarchical level one level higher than the hierarchical level to which the voxels containing the points of the current hierarchical level belong.
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公开(公告)号：US11991348B2
公开(公告)日：2024-05-21
申请号：US17620412
申请日：2020-06-11
发明人： Koji Yano , Hiroyuki Yasuda , Tsuyoshi Kato , Satoru Kuma , Ohji Nakagami
IPC分类号： H04N19/103 , G06T9/40 , H04N19/124 , H04N19/96
CPC分类号： H04N19/103 , G06T9/40 , H04N19/124 , H04N19/96
摘要： 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.
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公开(公告)号：US11917201B2
公开(公告)日：2024-02-27
申请号：US17437051
申请日：2019-12-24
发明人： Satoru Kuma , Ohji Nakagami , Tsuyoshi Kato , Koji Yano
IPC分类号： H04N7/12 , H04N19/597 , H04N19/85
CPC分类号： H04N19/597 , H04N19/85
摘要： The present disclosure relates to an information processing apparatus and an information generation method that enable suppression of deterioration in subjective quality of a point cloud.
There is generated an occupancyMap indicating, for each local area of a frame image, presence or absence of a projection image of a point cloud on a two-dimensional plane in accordance with a positional relationship of points in a three-dimensional space, while the point cloud represents an object having a three-dimensional shape as a set of the points. The present disclosure can be applied to, for example, an information processing apparatus, an encoding device, a decoding device, or the like.-
公开(公告)号：US11532103B2
公开(公告)日：2022-12-20
申请号：US17296411
申请日：2019-12-16
发明人： Ryohei Takahashi , Mitsuhiro Hirabayashi , Mitsuru Katsumata , Takumi Tsuru , Ohji Nakagami , Satoru Kuma
IPC分类号： G06T9/00
摘要： 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.
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公开(公告)号：US11915390B2
公开(公告)日：2024-02-27
申请号：US17296002
申请日：2019-12-24
发明人： Satoru Kuma , Ohji Nakagami , Koji Yano , Tsuyoshi Kato
摘要： There is provided an image processing device and a method capable of suppressing lowering of image quality. Correction information that is information regarding correction of 3D data representing a three-dimensional structure constructed using 2D data representing a two-dimensional image is generated, and the generated correction information is coded. Furthermore, coded data of correction information that is information regarding correction of 3D data representing a three-dimensional structure constructed using 2D data representing a two-dimensional image is decoded, and 3D data is constructed using the 2D data and correction information generated by decoding coded data of the correction information. The present disclosure can be applied to, for example, an information processing device, an image processing device, an electronic apparatus, an information processing method, a program, or the like.
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公开(公告)号：US11790602B2
公开(公告)日：2023-10-17
申请号：US17632044
申请日：2020-07-30
发明人： Koji Yano , Tsuyoshi Kato , Satoru Kuma , Ohji Nakagami , Hiroyuki Yasuda
CPC分类号： G06T17/005 , G06T7/11 , G06T9/40 , G06T15/08 , G06T2200/08 , G06T2207/10028 , G06T2207/20021 , G06T2210/12 , G06T2210/56
摘要： The present disclosure relates to an information processing device and method capable of curbing coding efficiency reduction. On the basis of position information indicating positions of points of a point cloud in units of first regions, for each second region composed of a plurality of first regions, a neighboring pattern of each first region including the points is specified by identifying whether or not each neighboring region adjacent to a processing target region includes the points or is positioned outside the second region including the processing target region, a context is selected according to the specified neighboring pattern, and the position information is coded using the selected context. The present disclosure can be applied to, for example, an information processing device, an image processing device, a coding device, a decoding device, an electronic apparatus, an information processing method, a program, or the like.
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