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111.发明申请公开(公告)号：US20220239956A1
公开(公告)日：2022-07-28
申请号：US17718647
申请日：2022-04-12
Applicant: Apple Inc.
Inventor： Alexandros Tourapis , Jungsun Kim , Valery G. Valentin , Fabrice A. Robinet , Yeping Su , Khaled Mammou
IPC: H04N19/96 , G06T9/00 , H04N19/176 , H04N19/91 , G06T17/00
Abstract: An encoder is configured to compress point cloud geometry information using an octree geometric compression technique that utilizes a binary arithmetic encoder, a look-ahead table, a cache, and a context selection process, wherein encoding contexts are selected based, at least in part, on neighborhood configurations. In a similar manner, a decoder is configured to decode compressed point cloud geometry information utilizing a binary arithmetic encoder, a look-ahead table, a cache, and a context selection process.
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公开(公告)号：US11282238B2
公开(公告)日：2022-03-22
申请号：US17032711
申请日：2020-09-25
Applicant: Apple Inc.
Inventor： Khaled Mammou , Yeping Su , David W. Singer , Alexandros Tourapis , Fabrice A. Robinet , Hsi-Jung Wu
Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud. The encoder is configured project the point cloud on to patch planes to compress the point cloud, and supports multiple layered patch planes. For example, some point clouds may have a depth, and points at different depths may be assigned to different layered patch planes.
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公开(公告)号：US20210217203A1
公开(公告)日：2021-07-15
申请号：US17145205
申请日：2021-01-08
Applicant: Apple Inc.
Inventor： Jungsun Kim , Khaled Mammou , Alexandros Tourapis
Abstract: A system comprises an encoder configured to compress attribute information and/or spatial information for three-dimensional (3D) visual volumetric content and/or a decoder configured to decompress compressed attribute and/or spatial information for the 3D visual volumetric content. The encoder is configured to convert 3D visual volumetric content, such as a point cloud or mesh, into image based patch representations. The encoder is further configured to select one or more reference patches for copying or prediction, such that metadata for copying or predicting a patch based on the reference patch is signaled without explicitly signaling a full set of information for the copied or predicted patch. Likewise, a decoder is configured to receive such information and reconstruct a 3D version of the 3D visual volumetric content using both signaled and predicted or copied patches.
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公开(公告)号：US11044478B2
公开(公告)日：2021-06-22
申请号：US16459485
申请日：2019-07-01
Applicant: Apple Inc.
Inventor： Alexandros Tourapis , Jungsun Kim , Fabrice A. Robinet , Khaled Mammou , Valery G. Valentin , Yeping Su
IPC: H04N19/14 , H04N19/184 , H04N19/172 , H04N19/124 , H04N19/80 , H04N19/117
Abstract: A system comprises an encoder configured to compress images, such as image frames comprising attribute information and/or spatial for a point cloud and/or an occupancy map for the point cloud. Also, a system includes a decoder configured to decompress compressed image frames, such as image frames comprising compressed attribute and/or spatial information for the point cloud or an occupancy map for the point cloud. Additionally, the encoder may map N-bit data to M-bit code words, where M is less than N. Alternatively the encoder may map N-bit data to M-bit code words, where M is greater than N. In a similar manner, a decoder may map the M-bit code words back to the N-bit data.
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公开(公告)号：US20210150766A1
公开(公告)日：2021-05-20
申请号：US17163188
申请日：2021-01-29
Applicant: Apple Inc.
Inventor： Khaled Mammou , Valery G. Valentin , Fabrice A. Robinet , Alexandros Tourapis , Yeping Su , Jungsun Kim
Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud. In some embodiments, an encoder may be configured to further compress points omitted from the image based representation. Also, in some embodiments, a decoder may be configured to decode points compressed outside of an image based representation or in a separate image based representation.
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Patent Agency Ranking
公开(公告)号：US20210119640A1
公开(公告)日：2021-04-22
申请号：US17133394
申请日：2020-12-23
Applicant: Apple Inc.
Inventor： Khaled Mammou , Fabrice A. Robinet , Alexandros Tourapis , Yeping Su
IPC: H03M7/30 , H04N19/96 , H04N19/436 , H04N19/60 , H04N19/597
Abstract: A system comprises an encoder configured to compress attribute information for a point cloud and/or a decoder configured to decompress compressed attribute information for the point cloud. Attribute values for at least one starting point are included in a compressed attribute information file and attribute correction values used to correct predicted attribute values are included in the compressed attribute information file. Attribute values are predicted based, at least in part, on attribute values of neighboring points and distances between a particular point for whom an attribute value is being predicted and the neighboring points. The predicted attribute values are compared to attribute values of a point cloud prior to compression to determine attribute correction values. A decoder follows a similar prediction process as an encoder and corrects predicted values using attribute correction values included in a compressed attribute information file.
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公开(公告)号：US20210104075A1
公开(公告)日：2021-04-08
申请号：US17061450
申请日：2020-10-01
Applicant: Apple Inc.
Inventor： Khaled Mammou , David Flynn , Alexandros Tourapis
Abstract: An encoder is configured to compress point cloud geometry information using a prediction tree. Ancestor nodes of a node added to the prediction tree may be used to determine the predicted value of the node to be added according to a prediction technique. The prediction tree may be encoded and may be provided for transmission to a decoder that can regenerate the point cloud.
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公开(公告)号：US20210097726A1
公开(公告)日：2021-04-01
申请号：US17119938
申请日：2020-12-11
Applicant: Apple Inc.
Inventor： Khaled Mammou , Yeping Su , Alexandros Tourapis , Jungsun Kim , Valery G. Valentin , Fabrice A. Robinet
IPC: G06T9/00 , G06T17/00 , G06F16/901
Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. A point cloud attribute transfer algorithm may be used to determine distortion between an original point cloud and a reconstructed point cloud. Additionally, the point cloud attribute transfer algorithm may be used to select attribute values for a reconstructed point cloud such that distortion between an original point cloud and a reconstructed version of the original point cloud is minimized.
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公开(公告)号：US10939129B2
公开(公告)日：2021-03-02
申请号：US16380922
申请日：2019-04-10
Applicant: Apple Inc.
Inventor： Khaled Mammou , Valery G. Valentin , Fabrice A. Robinet , Alexandros Tourapis , Yeping Su , Jungsun Kim
IPC: H04N19/20 , H04N19/597 , H04N19/46 , H04N19/174 , G06T7/11 , G06T7/246 , H04N19/176 , H04N19/86 , H04N19/70
Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud. The encoder generates an occupancy map and may also encode the occupancy map as an image based representation. In some embodiments, a video encoder encodes image based representations of spatial information for the points of the point cloud, image based representations of attribute values for points of the point cloud, and an image based representation of an occupancy map for the spatial and attribute images.
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公开(公告)号：US10909725B2
公开(公告)日：2021-02-02
申请号：US16132230
申请日：2018-09-14
Applicant: Apple Inc.
Inventor： Khaled Mammou , Fabrice A. Robinet , Alexandros Tourapis , Yeping Su
Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud.
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