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公开(公告)号：US11902577B2
公开(公告)日：2024-02-13
申请号：US17381789
申请日：2021-07-21
Inventor： Toshiyasu Sugio , Noritaka Iguchi , Pongsak Lasang , Chi Wang , Chung Dean Han
IPC: H04N19/597 , H04N19/182 , H04N19/167 , H04N19/46 , H04N19/85 , H04N13/246 , H04N13/282 , G01S17/89
CPC classification number: H04N19/597 , H04N19/167 , H04N19/182 , H04N19/46 , H04N19/85 , G01S17/89 , H04N13/246 , H04N13/282
Abstract: A three-dimensional data encoding method includes: obtaining geometry information which includes first three-dimensional positions on a measurement target, and is generated by a measurer that radially emits an electromagnetic wave in different directions and obtains a reflected wave which is the electromagnetic wave that is reflected by the measurement target; generating a two-dimensional image including first pixels corresponding to the directions, based on the geometry information; and encoding the two-dimensional image to generate a bitstream. Each of the first pixels has a pixel value indicating a first three-dimensional position or attribute information of a three-dimensional point which is included in a three-dimensional point cloud and corresponds to a direction to which the first pixel corresponds among the directions.
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公开(公告)号：US11889114B2
公开(公告)日：2024-01-30
申请号：US17469257
申请日：2021-09-08
Inventor： Noritaka Iguchi , Toshiyasu Sugio , Chung Dean Han , Pongsak Lasang
IPC: H04N19/597 , H04N19/124 , H04N19/184
CPC classification number: H04N19/597 , H04N19/124 , H04N19/184
Abstract: A three-dimensional data encoding method uses a first encoding scheme and a second encoding scheme different from the first encoding scheme, and includes: (i) transforming a first quantization parameter to a first scale value or (ii) transforming the first scale value to the first quantization parameter, based on a first table indicating a correspondence between values of the first quantization parameter and values of the first scale value and being shared between the first encoding scheme and the second encoding scheme; performing encoding including a first quantization process to generate encoded attribute information, the first quantization process being a process of dividing, by the first scale value, each of first coefficient values based on items of attribute information of three-dimensional points included in point cloud data; and generating a bitstream including the encoded attribute information and the first quantization parameter.
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公开(公告)号：US11722714B2
公开(公告)日：2023-08-08
申请号：US17554168
申请日：2021-12-17
Inventor： Noritaka Iguchi , Tadamasa Toma , Hisaya Katou
IPC: H04N21/236 , H04N19/169 , H04N19/436 , H04N19/70 , G10L19/16 , H04N5/38 , H04N5/44 , H04N21/434 , H04N21/854
CPC classification number: H04N21/23614 , G10L19/167 , H04N5/38 , H04N5/44 , H04N19/188 , H04N19/436 , H04N19/70 , H04N21/23605 , H04N21/4343 , H04N21/4348 , H04N21/85406
Abstract: A transmitting method according to one aspect of the present disclosure includes: encoding a video signal and generating encoded data including a plurality of access units; storing the plurality of access units in a packet in a unit that defines one access unit as one unit or in a unit defined by dividing one access unit, and generating a packet group; transmitting the generated packet group as data; generating first information and second information, the first information indicating a presentation time of a first access unit that is presented first among the plurality of access units, and the second information being used to calculate a decoding time of the plurality of access units; and transmitting the first information and the second information as control information.
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公开(公告)号：US11694368B2
公开(公告)日：2023-07-04
申请号：US17406538
申请日：2021-08-19
Inventor： Toshiyasu Sugio , Noritaka Iguchi
CPC classification number: G06T9/001 , G06F18/241 , G06T9/40 , G06V20/64
Abstract: A three-dimensional data encoding method includes: determining a total number of layers; when the total number of the layers is greater than 1, selecting, from pieces of attribute information of three-dimensional points, attribute information of a three-dimensional point based on a sampling period according to a data order of the pieces of attribute information of the three-dimensional points, and classifying the pieces of attribute information of the three-dimensional points into layers by assigning a first layer to pieces of attribute information of three-dimensional points selected and a second layer to pieces of attribute information of three-dimensional points non-selected; encoding the pieces of attribute information of the three-dimensional points for each of the layers; and generating a bitstream including the pieces of attribute information encoded, layer-number information, and sampling period information. When the total number of the layers is 1, a bitstream not including the sampling period information is generated.
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公开(公告)号：US11677981B2
公开(公告)日：2023-06-13
申请号：US17493180
申请日：2021-10-04
Inventor： Chung Dean Han , Pongsak Lasang , Chi Wang , Noritaka Iguchi , Toshiyasu Sugio
IPC: H04N19/597 , H04N19/70
CPC classification number: H04N19/597 , H04N19/70
Abstract: A three-dimensional data encoding method includes: generating a bitstream by encoding subspaces included in a current space in which three-dimensional points are included. The bitstream includes encoded data respectively corresponding to the subspaces. In the generating of the bitstream, a list of information about the subspaces is stored in first control information included in the bitstream. The subspaces are respectively associated with identifiers assigned to the subspaces, and the first control information is common to the encoded data. Each of the identifiers assigned to the subspaces respectively corresponding to the encoded data is stored in a header of a corresponding one of the encoded data.
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Patent Agency Ranking
公开(公告)号：US11523191B2
公开(公告)日：2022-12-06
申请号：US17402827
申请日：2021-08-16
Inventor： Noritaka Iguchi , Tadamasa Toma , Hisaya Katou
IPC: H04N21/643 , H04N21/43 , H04L7/00 , H04N21/236 , H04N21/2381 , H04N21/242 , H04N21/262 , H04N21/438 , H04N21/61
Abstract: A transmission method includes generating one or more frames for content transfer using IP (Internet Protocol) packets, and transmitting the one or more generated frames by broadcast. Each of the one or more frames contains a plurality of second transfer units, each of the plurality of second transfer units contains one or more first transfer units, and each of the one or more first transfer units contains at least one of the IP packets. An object IP packet of the IP packets which is stored in a first transfer unit positioned at a head in the one or more frames contains reference clock information that indicates time for reproduction of the content in data structure different from data structure of an MMT (MPEG Media Transport) packet, and header compression processing on the object IP packet is omitted.
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公开(公告)号：US11488327B2
公开(公告)日：2022-11-01
申请号：US17226661
申请日：2021-04-09
Inventor： Chi Wang , Pongsak Lasang , Chung Dean Han , Noritaka Iguchi , Toshiyasu Sugio
IPC: G06T9/00
Abstract: A three-dimensional data encoding method includes: generating a bitmap indicating which of pieces of three-dimensional data a three-dimensional point belongs to, the three-dimensional point being included in a unit space; generating a conversion code using a look-up table and the bitmap generated; and generating encoded data including duplicated point information indicating a total number of three-dimensional points included in the unit space, and conversion code information indicating the conversion code. The generating of the conversion code includes: generating the conversion code from the bitmap when the total number of the three-dimensional points included in the unit space is less than or equal to a predetermined threshold value; and generating the conversion code from an inverted bitmap when the total number of the three-dimensional points included in the unit space is greater than the predetermined threshold value, the inverted bitmap being obtained by inverting 0 and 1 included in the bitmap.
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公开(公告)号：US11483588B2
公开(公告)日：2022-10-25
申请号：US17223667
申请日：2021-04-06
Inventor： Toshiyasu Sugio , Noritaka Iguchi
IPC: H04N19/597 , H04N19/463 , G06T9/00
Abstract: A three-dimensional data encoding method includes: dividing three-dimensional points included in point cloud data into processing units each of which includes one or more of the three-dimensional points; and encoding attribute information of a current three-dimensional point included in a current processing unit, by reference to an encoded processing unit, to generate a bitstream.
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公开(公告)号：US11463735B2
公开(公告)日：2022-10-04
申请号：US17130826
申请日：2020-12-22
Inventor： Noritaka Iguchi , Toshiyasu Sugio
IPC: H04B1/66 , H04N7/12 , H04N11/02 , H04N11/04 , H04N19/70 , H04N19/177 , H04N19/184
Abstract: A three-dimensional data encodes method of encoding three-dimensional data items in time series. Each of the three-dimensional data items includes a geometry information item and an attribute information item in association with a same time point. The three-dimensional data encoding method includes: first encoding of encoding the geometry information item; and second encoding of encoding the attribute information item with reference to the geometry information item associated with the same time point. The geometry information item and the attribute information item that are in association with the same time point are included in an access unit.
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公开(公告)号：US11350154B2
公开(公告)日：2022-05-31
申请号：US17161852
申请日：2021-01-29
Inventor： Noritaka Iguchi , Tadamasa Toma
IPC: H04N21/43 , H04N21/2389 , H04N21/8547 , H04N21/2365 , H04N21/845 , H04N21/434 , H04N21/2343 , H04N21/2381 , H04N21/242 , H04N21/633 , H04N21/6332 , H04N21/83
Abstract: A receiving method of receiving a first data unit in which data making up an encoded stream is stored and the first data unit stores a plurality of second data units. The receiving method includes: receiving the first data unit, first time information indicating a presentation time of the first data unit, second time information indicating, together with the first time information, a presentation time or a decoding time of each of the plurality of second data units, and identification information; calculating the presentation time or the decoding time of each of the plurality of second data units using the first time information and the second time information; and correcting the presentation time or the decoding time of each of the plurality of second data units based on the identification information.
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