Panasonic Intellectual Property Corporation of America

Sun Patent Trust

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Noritaka Iguchi

Toshiyasu Sugio

Tadamasa Toma

Hisaya Katou

Takahiro Nishi

Pongsak Lasang

Chi Wang

Chung Dean Han

Keng Liang Loi

Tomohiro Kimura

Mikihiro Ouchi

Pradit Mittrapiyanuruk

Masato Ohkawa

Daisuke Hayashi

Tetsuya Yagi

Ryosuke Mori

Koji Setoh

Ippei Kanno

Akira Kisoda

Hisao Sasai

Kengo Terada

Zheng Wu

Taiho Nakazawa

Yui Koashi

Yasuhisa Inada

Yumiko Kato

Sadashi Kageyama

Kouji Setoh

A video transmission method according to the present disclosure includes: generating a transmission signal including, in a time series, first video data having a first luminance dynamic range and second video data having a second luminance dynamic range wider than the first luminance dynamic range; and transmitting the transmission signal generated. In the generating of the transmission signal, a signal level corresponding to a luminance value is limited to a value lower than a limit value that is predetermined, in a transition period provided for switching from one of the first video data and the second video data to the other.

Video transmission method, video reception method, video transmission apparatus, and video reception apparatus

A three-dimensional data encoding method includes: encoding, for each of second units, information about positions of three-dimensional points included in a first unit, to generate encoded data items, the second units being smaller than the first unit that is an encoding unit; and outputting the encoded data items. Each of the encoded data items includes no individual additional information. The encoded data items include common additional information. The common additional information includes first information indicating a size of a first encoded data item included in the encoded data items.

Three-dimensional data encoding method, three-dimensional data decoding method, three-dimensional data encoding device, and three-dimensional data decoding device

A three-dimensional data encoding method includes: encoding geometry information of a plurality of three-dimensional points represented by a tree structure; and generating a bitstream including the geometry information encoded and division number information indicating a total number of divisions of each of a plurality of nodes included in the tree structure. The division number information includes common division number information collectively indicating the total number of divisions of two or more nodes among the plurality of nodes.

A three-dimensional data encoding method includes: generating encoded data by encoding third point cloud data that is a combination of first point cloud data and second point cloud data; and generating a bitstream including the encoded data and control information. The encoded data includes a piece of geometry information and pieces of attribute information of each of three-dimensional points included in the third point cloud data. One of the pieces of attribute information includes first information indicating whether a corresponding one of the three-dimensional points belongs to the first point cloud data or the second point cloud data. The control information includes second information indicating, among the pieces of attribute information, a piece of attribute information including the first information.

A three-dimensional data encoding method includes: generating quantized values by quantizing, using one or more first parameters for one or more groups to which one or more attribute information belong, a coefficient value calculated for each node included in a layered structure of three-dimensional points. At least one attribute information belongs to any of the one or more groups. The calculating includes calculating, using two first coefficient values of two first nodes of a first layer, a second coefficient value of a second node of a second layer which is one layer higher. The quantizing includes: shifting-up the one or more first parameters by N bits (N is a natural number); shifting-down, by one bit, a sum of two second parameters of the two first nodes; shifting-down the result by N bits; and quantizing the second coefficient value using the obtained parameter.

An encoding method for encoding three-dimensional points each having a position represented by a distance and an angle, the encoding method comprising: identifying three-dimensional points that belong to a second processing unit and have been encoded, for inter prediction of a first three-dimensional point belonging to a first processing unit; and selecting a reference three-dimensional point from the three-dimensional points identified to calculate an inter predicted value of the first three-dimensional point. The three-dimensional points identified include a second three-dimensional point and a third three-dimensional point, the second three-dimensional point having a second angle corresponding to a first angle of the first three-dimensional point, the third three-dimensional point having a third angle greater than the second angle.

Encoding method, decoding method, encoding device, and decoding device

A three-dimensional data encoding method includes: obtaining second attribute information obtained by transforming first attribute information of a three-dimensional point in at least one frame among frames, the frames constituting a sequence; and encoding the second attribute information to generate a bitstream. The transforming is different from quantization, and the bitstream further includes: at least one first parameter provided for the sequence for the transforming; and at least one second parameter provided for each of the at least one frame for the transforming.

A three-dimensional data encoding method includes: calculating a prediction residual that is a difference between geometry information of a three-dimensional point included in point cloud data and a predicted value; quantizing the prediction residual using a first quantization parameter; and generating a bitstream including (i) first information indicating the prediction residual quantized, (ii) second information indicating a second quantization parameter, (iii) third information indicating a first difference between the second quantization parameter and the first quantization parameter, (iv) fourth information indicating a first bit count of the first information, and (v) fifth information indicating a second bit count of the fourth information. When the first difference is not zero, the bitstream further includes sixth information indicating an amount of change in the fifth information that is in accordance with the first difference, and when the first difference is zero, the bitstream does not include the sixth information.

A three-dimensional data encoding method includes: calculating a predicted value of a position of a three-dimensional point according to one of inter prediction and intra prediction; calculating a residual between the predicted value and the position; arithmetic-encoding the residual using a first context when the predicted value is calculated according to the inter prediction; and arithmetic-encoding the residual using a second context different from the first context when the predicted value is calculated according to the intra prediction. The residual is expressed by third residual information indicating a bit count of the residual.

A three-dimensional data encoding method of encoding three-dimensional points includes: calculating a predicted value of attribute information of a first three-dimensional point in a prediction mode, using one or more items of attribute information of one or more second three-dimensional points in the vicinity of the first three-dimensional point; calculating a prediction residual that is a difference between the attribute information of the first three-dimensional point and the predicted value; and generating a bitstream including the prediction residual and prediction mode information indicating the prediction mode. The prediction mode is: one prediction mode among two or more prediction modes when a type of the attribute information of the first three-dimensional point is first attribute information including elements more than a predetermined threshold value; and one fixed prediction mode when the type is second attribute information including elements equal to or less than the predetermined threshold value.

A three-dimensional data encoding method includes: quantizing geometry information of each of three-dimensional points, using a first quantization parameter; quantizing a first luminance using a second quantization parameter and quantizing a first chrominance using a third quantization parameter, the first luminance and the first chrominance indicating a first color among attribute information of each of the three dimensional points; and generating a bitstream including the geometry information quantized, the first luminance quantized, the first chrominance quantized, the first quantization parameter, the second quantization parameter, and a first difference between the second quantization parameter and the third quantization parameter.

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.

Receiving method, receiving device, and transmission and reception system

A three-dimensional data encoding method includes: determining whether a first valid node count is greater than or equal to a first threshold value predetermined, the first valid node count being a total number of valid nodes that are nodes each including a three-dimensional point, the valid nodes being included in first nodes belonging to a layer higher than a layer of a current node in an N-ary tree structure of three-dimensional points included in point cloud data, N being an integer greater than or equal to 2; and, when the first valid node count is greater than or equal to the first threshold value, performing first encoding on attribute information of the current node, the first encoding including a prediction process in which second nodes are used, the second nodes including a parent node of the current node and belonging to a same layer as the parent node.

A transmission method includes: generating a frame for transfer which stores one or more first internet protocol (IP) packets storing content, and one or more second IP packets each including reference clock information which indicates a time for a playback of the content; and transmitting the generated frame through broadcasting. In the generating, header compression is performed on the one or more first IP packets and the header compression is not performed on the one or more second IP packets.

Transmission method, reception method, transmission apparatus, and reception apparatus

A data transmission method according to one aspect of the present disclosure includes: generating a plurality of MPUs, reference clock time information, and leading clock time information indicating a leading PTS that is a clock time at which a leading access unit in the MPU is presented, transmitting the generated plurality of MPUs, reference clock time information, and leading clock time information, wherein the leading clock time information indicates the leading PTS of the plurality of MPUs of which presentation is started after the leading clock time information is transmitted in the generated plurality of MPUs, and each of the generated plurality of MPUs indicates a time point at which each access unit that does not exist in a head of the MPU is presented as a relative value to a time point of another access unit in the MPU.

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Osaka, Japan

Noritaka Iguchi