Point cloud encoding device, point cloud decoding device, point cloud encoding method, point cloud decoding method, and program
AssigneesKDDI Research, Inc., University of Southern California
InventorsShashank Nelamangala Sridhara, Eduardo Hernan Pavez Carvelli, Antonio Ortega, Ryousuke Watanabe, Keisuke Nonaka, Kyouhei Unno
Life of this patent
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Abstract
Encoding efficiency for attribute information in point cloud information is improved. A point cloud encoding device includes a subsampling unit configured to preserve chroma signals of some points in a point cloud to be encoded and discard chroma signals of remaining points other than those points, and an attribute information encoding unit configured to encode the chroma signals of those points in the point cloud to be encoded and luma signals of all points.
Claims5
A point cloud decoding device, comprising:
- a computer system;
- and
- a memory including a computer program that, when executed by the computer system, causes the computer system to perform functions, the functions including:
- three-dimensionally decoding chroma signals of some points and luma signals of all points in a reconstructed three-dimensional point cloud in a three-dimensional coordinate system reconstructed from a bitstream;
- and
- three-dimensionally interpolating chroma signals of a non-decoding target point, which is a point where chroma signals are not decoded in the three-dimensional reconstructed point cloud, based on the decoded chroma signals of K predetermined neighboring points of a decoding target point, which is a target point for decoding chroma signals.
A point cloud decoding method, comprising:
- three-dimensionally decoding chroma signals of some points and luma signals of all points in a reconstructed three-dimensional point cloud in a three-dimensional coordinate system reconstructed from a bitstream;
- and
- three-dimensionally interpolating chroma signals of a non-decoding target point, which is a point where chroma signals are not decoded in the reconstructed three-dimensional point cloud, based on the decoded chroma signals of K predetermined neighboring points of a decoding target point, which is a target point for decoding chroma signals.
A non-transitory computer-readable medium including a program for causing a computer, included in a point cloud decoding device, to execute:
- three-dimensionally decoding chroma signals of some points and luma signals of all points in a reconstructed three-dimensional point cloud in a three-dimensional coordinate system reconstructed from a bitstream;
- and
- three-dimensionally interpolating chroma signals of a non-decoding target point, which is a point where chroma signals are not decoded in the reconstructed three-dimensional point cloud, based on the decoded chroma signals of K predetermined neighboring points of a decoding target point, which is a target point for decoding chroma signals.
Dependencies are inferred from the claim text.