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公开(公告)号：US11663744B2
公开(公告)日：2023-05-30
申请号：US17306863
申请日：2021-05-03
申请人： Apple Inc.
发明人： Alexandros Tourapis , Khaled Mammou , Yeping Su , Jungsun Kim , Valery G. Valentin , David W. Singer , Fabrice A. Robinet , Hsi-Jung Wu
CPC分类号： G06T9/00 , G06T3/40 , G06T17/20 , H03M7/6005 , H03M7/6011
摘要： 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. A processing/filtering element utilizes occupancy map information and/or auxiliary patch information to determine relationships between patches in image frames and adjusts encoding/decoding and/or filtering or pre/post-processing parameters based on the determined relationships.
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公开(公告)号：US20220353543A1
公开(公告)日：2022-11-03
申请号：US17867644
申请日：2022-07-18
申请人： Apple Inc.
IPC分类号： H04N19/82 , H04N19/107 , H04N19/137 , H04N19/182 , H04N19/186
摘要： A system comprises an encoder configured to compress video data using an in-loop noise generation process that generates noise in the compression loop at a sub-image portion level of granularity, such as at a block level. The encoder includes noise model and/or noise model input parameter information in an encoded bit stream. Also, a system includes a decoder configured to receive such a bit stream and decompress the video using an in-loop noise generation process that generates noise in the decompression loop at a sub-image portion level of granularity.
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公开(公告)号：US11386524B2
公开(公告)日：2022-07-12
申请号：US16586872
申请日：2019-09-27
申请人： Apple Inc.
发明人： Khaled Mammou , Alexandros Tourapis , Jungsun Kim , Yeping Su , David W. Singer , Valery G. Valentin , Fabrice A. Robinet
摘要： 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. The encoder is configured to convert a point cloud into an image based representation. The encoder packs patch images into an image frame and fills empty spaces in the image frame with a padding, wherein pixel values for the padding are determined based on neighboring pixels values such that the padding is smoothed in the image frame. 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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公开(公告)号：US11361471B2
公开(公告)日：2022-06-14
申请号：US15931349
申请日：2020-05-13
申请人： Apple Inc.
发明人： Khaled Mammou , Yeping Su , David W. Singer , Alexandros Tourapis , Fabrice A. Robinet , Hsi-Jung Wu
IPC分类号： G06T7/50 , G06T9/00 , G06T7/70 , G06T7/20 , A01C3/02 , G08B1/00 , G09B1/00 , G06T1/00 , G11B7/002
摘要： 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. A block/sub-block organization scheme is used to encode blocks and sub-blocks of an occupancy map used in compressing the point cloud. Binary values are assigned to blocks/sub-blocks based on whether they contain patches projected on the point cloud. A traversal path is chosen that takes advantage of run-length encoding strategies to reduce a size of an encoded occupancy map. Also, auxiliary information is used to further improve occupancy map compression.
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公开(公告)号：US20220070493A1
公开(公告)日：2022-03-03
申请号：US17523826
申请日：2021-11-10
申请人： Apple Inc.
发明人： Khaled Mammou , Yeping Su , Jungsun Kim , Valery G. Valentin , David W. Singer , Fabrice A. Robinet , Hsi-Jung Wu , Alexandros Tourapis
IPC分类号： H04N19/597 , H04N19/85 , H04N19/463
摘要： A system comprises an encoder configured to compress attribute and/or spatial information 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 performs downscaling of an image frame prior to video encoding and a decoder performs upscaling of an image frame subsequent to video decoding.
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公开(公告)号：US11017566B1
公开(公告)日：2021-05-25
申请号：US16459483
申请日：2019-07-01
申请人： Apple Inc.
发明人： Alexandros Tourapis , Khaled Mammou , Yeping Su , Jungsun Kim , Valery G. Valentin , David W. Singer , Fabrice A. Robinet , Hsi-Jung Wu
摘要： 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. A processing/filtering element utilizes occupancy map information and/or auxiliary patch information to determine relationships between patches in image frames and adjusts encoding/decoding and/or filtering or pre/post-processing parameters based on the determined relationships.
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公开(公告)号：US20210136370A1
公开(公告)日：2021-05-06
申请号：US16834611
申请日：2020-03-30
申请人： Apple Inc.
IPC分类号： H04N19/119 , H04N19/159 , H04N19/139 , H04N19/176 , H04N19/573 , H04N19/543
摘要： Techniques for coding and decoding video may include predicting picture regions defined by a time-varying tessellation and/or by a tessellation that varies spatially within a picture. These techniques improve decoded video quality, for example, by reducing block-based visual artifacts. Tessellation patterns may be irregular spatially to prevent alignment of some prediction region boundaries within a picture. Tessellation patterns may vary over time based on a spatial offset value, and the spatial offset value may be determined via a modulo function. Tessellation patterns may include overlapped shapes, for example when used in conjunction with overlapped block motion compensation.
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公开(公告)号：US20210012536A1
公开(公告)日：2021-01-14
申请号：US17032711
申请日：2020-09-25
申请人： Apple Inc.
发明人： Khaled Mammou , Yeping Su , David W. Singer , Alexandros Tourapis , Fabrice A. Robinet , Hsi-Jung Wu
IPC分类号： G06T9/00 , G06T7/20 , G06T7/50 , H04N19/172
摘要： 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：US10785275B2
公开(公告)日：2020-09-22
申请号：US16529687
申请日：2019-08-01
申请人： Apple Inc.
发明人： Eric Carlson , Kevin Calhoun , David W. Singer
IPC分类号： H04L29/06 , H04N21/2343 , H04N21/235 , H04N21/431 , H04N21/435 , H04N21/443 , H04N21/658 , H04N21/84 , G06F16/958 , G06F16/957 , G06F16/70
摘要： A method and apparatus for presenting timed media represented by data in a markup language (e.g., HTML) including examining a tag or metadata which is capable of specifying more than one form or representation of timed media, such as different versions of a video encoded according to different video codec standards.
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公开(公告)号：US10699444B2
公开(公告)日：2020-06-30
申请号：US16198635
申请日：2018-11-21
申请人： Apple Inc.
发明人： Khaled Mammou , Yeping Su , David W. Singer , Alexandros Tourapis , Fabrice A. Robinet , Hsi-Jung Wu
摘要： 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. A block/sub-block organization scheme is used to encode blocks and sub-blocks of an occupancy map used in compressing the point cloud. Binary values are assigned to blocks/sub-blocks based on whether they contain patches projected on the point cloud. A traversal path is chosen that takes advantage of run-length encoding strategies to reduce a size of an encoded occupancy map. Also, auxiliary information is used to further improve occupancy map compression.
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