Panasonic Intellectual Property Corporation of America

Sun Patent Trust

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Tagivan Ii LLC

Velos Media, LLC

Matsushita Electric Industrial Co., Ltd.

Panasonic Holdings Corporation

Intellectual Property Corporation of America

Takahiro Nishi

Tadamasa Toma

Toshiyasu Sugio

Hisao Sasai

Youji Shibahara

Toru Matsunobu

Kiyofumi Abe

Kyoko Tanikawa

Chong Soon Lim

Kengo Terada

Hai Wei Sun

Ryuichi Kanoh

Han Boon Teo

Jing Ya Li

Viktor Wahadaniah

Ru Ling Liao

Yusuke Kato

Sue Mon Thet Naing

Sughosh Pavan Shashidhar

Virginie Drugeon

Masayuki Kozuka

Noritaka Iguchi

Chu Tong Wang

Che Wei Kuo

Takashi Hashimoto

Che-Wei Kuo

Masato Ohkawa

Hisaya Katou

Hideo Saitou

Hiroshi Yahata

Satoshi Yoshikawa

Daisaku Komiya

Tatsuya Koyama

Xuan Jing

Kyaw Kyaw Win

Shinya Kadono Kadono

Choong Seng Boon

Satoshi Kondo

Masayasu Iguchi

Taiji Sasaki

Hiroaki Toida

Sue Mon Naing

Pongsak Lasang

Luca Rigazio

Masayoshi Tojima

Alec Hodgkinson

Tomoki Ogawa

Toshiya Takahashi

Yuki Maruyama

David Michael Duffy

Christopher John Wright

Min Li

Jin Li

Bernadette Elliott Bowman

Wataru Ikeda

Tomokazu Ishikawa

Aki Yoneda

Chi Wang

Kazuya Takagi

Chung Dean Han

Keng Liang Loi

Shintarou Nakatani

Rohith Mars

Zheng Wu

Haiwei Sun

Teo Han Boon

Kyoto Tanikawa

Makoto Hagai

Tao Chen

Hiroshi Arakawa

Sheng Mei Shen

Yoshiichiro Kashiwagi

Hideyuki Ohgose

Kazuki Funase

Yoshinori Matsui

Satoshi Takahashi

Toshiroh Nishio

Koji Arimura

Akihiko Inoue

Naoshi Usuki

Hiroto Tomita

Steffen Wittmann

Yuka Ozawa

Toru Kawaguchi

Jun Takahashi

Hidekatsu Ozeki

Kyoko Uchibayashi

Yui Koashi

Katsuki Urano

Takanori Ishida

Youji Sibahara

Vikto Wahadaniah

Various embodiments provide a decoder configured to select a filter based on a block size of a first block and a block size of a second block in an image, and change values of pixels in the first block and the second block. The filter includes a first set of multipliers and a first set of offsets for the first block, and a second set of multipliers and a second set of offsets for the second block. The values of the pixels in the first block and the second block are changed by performing multiplication with each multiplier in the first set of multipliers, by performing multiplication with each multiplier in the second set of multipliers, and by using the first set of offsets and the second set of offsets.

Encoder, decoder, and related non-transitory computer readable medium

An encoder, includes: memory; and circuitry coupled to the memory, in which in a first encoding process, the circuitry quantizes a current block using a first quantization matrix in both of a first case where the circuitry performs primary transform and the circuitry does not perform secondary transform and a second case where the circuitry performs both the primary transform and the secondary transform, in a second encoding process, the circuitry quantizes the current block using a second quantization matrix in a third case where the circuitry performs primary transform and the circuitry does not perform secondary transform, and in a third encoding process, the circuitry quantizes the current block without using a quantization matrix in both of a fourth case where both the primary transform and the secondary transform are skipped and a fifth case where both the primary transform and the secondary transform are performed.

Encoder, decoder, encoding method, and decoding method

A processor obtains pieces of coded data, which are included in a bitstream and generated by coding tiles, and tile boundary independence information, which indicates whether each boundary between the tiles is a first or second boundary. Image data of a first tile is generated by decoding a first code string included in first coded data with reference to decoding information of a decoded tile when the tile boundary independence information indicates the first boundary, and by decoding the first code string without referring to the decoding information when the tile boundary independence information indicates the second boundary. A bit string is added after the first code string to make a bit length of first coded data a multiple of a predetermined N bits, with N being an integer greater than or equal to 2.

Image coding apparatus for coding tile boundaries

A motion vector calculation method which attains a higher compression rate, includes: a selection step of selecting one of at least one reference motion vector of a reference block; and a calculation step of calculating a motion vector of a current block to be processed, using the one reference motion vector selected in the selection step, and in the selection step, when the reference block has two reference motion vectors, one of the two reference motion vectors is selected based on whether the reference block is located before or after the current block in display time order, and when the reference block has only one reference motion vector, the one reference motion vector is selected.

Motion vector calculation method, picture coding method, picture decoding method, motion vector calculation apparatus, and picture coding and decoding apparatus

A video encoding method using a plurality of reference pictures includes: selecting whether or not a resilient picture referencing scheme is to be used for encoding video; writing a parameter indicating the selection into a header of an encoded video bitstream; and encoding a picture using inter-picture prediction using a result of the selection.

Video encoding method and video decoding method

A current block included in a current picture included in a coded video stream is decoded by determining a reference picture in the coded video stream, the reference picture being included in one of (i) a first reference picture group of the current block and (ii) a second reference picture group of the current block; selecting a reference motion vector of a reference block in the reference picture such that in situation (A) when the reference block has a first reference motion vector and a second reference motion vector that respectively correspond to the first reference picture group and the second reference picture group, (i) the first reference motion vector is selected when the reference picture is included in the second reference picture group and (ii) the second reference motion vector is selected when the reference picture is included in the first reference picture group, in situation (B) when the reference block has only one reference motion vector, the only reference motion vector is selected, and in situation (C) when the reference block has no reference motion vector, a zero reference motion vector is selected; deriving the motion vector of the current block using the selected one reference motion vector; and decoding the current block using the derived motion vector.

A decoding method includes: determining a numerical range based on whether intra prediction or inter prediction is to be used to decode encoded first information of a current three-dimensional point; and switching a context between a first context and a second context to entropy-decode the encoded first information, based on whether an absolute value of decoded second information of the current three-dimensional point is included in the numerical range determined.

Decoding method, encoding method, decoding device, and encoding device

An encoder including circuitry and memory coupled to the circuitry. In both of a first case where an orthogonal transform is performed and a second case where the orthogonal transform is skipped, when a number of CABAC processes is within an allowable range, the circuitry: encodes a plurality of coefficient information flags by CABAC; and encodes a remainder value of the coefficient; and when the number of CABAC processes is not within the allowable range, the circuitry: skips the encoding of the plurality of coefficient information flags, wherein in the first case, the circuitry: converts the coefficient to a second coefficient by using a poszero value that is determined using a plurality of surrounding coefficients; and encodes a value of the second coefficient, and wherein in the second case, the circuitry: encodes the value of the coefficient.

An image coding method of hierarchically coding a plurality of pictures to generate a bitstream, includes: coding each of the plurality of pictures, which belongs to any one of a plurality of hierarchical layers, with reference to a picture belonging to a hierarchical layer which is same as or lower than a hierarchical layer to which the picture belongs, and without reference to a picture belonging to a hierarchical layer which is higher than the hierarchical layer to which the picture belongs; and generating the bitstream by coding the coded pictures and time information indicating decoding times of the coded pictures. The time information indicates that the decoding times are set at equal intervals for low-layer pictures which are the plurality of pictures other than highest-layer pictures belonging to a highest layer among the plurality of hierarchical layers.

Image coding method, image decoding method, image coding apparatus, receiving apparatus, and transmitting apparatus

A three-dimensional data creation method for use in a vehicle including a sensor and a data receiver that transmits and receives three-dimensional data to and from an external device. The three-dimensional data creation method includes: creating second three-dimensional data based on information detected by the sensor and first three-dimensional data received by the data receiver; and transmitting, to the external device, third three-dimensional data that is part of the second three-dimensional data.

Three-dimensional data generation method and three-dimensional data generation device

An encoder includes memory and circuitry coupled to the memory. The circuitry stores a total number of temporal sub-layers in a bitstream Into either a picture timing supplemental enhancement information (SEI) message or a buffering period SEI message, and encodes the total number of the temporal sub-layers.

An encoder includes circuitry and a memory coupled to the circuitry, wherein the circuitry, in operation, performs a partition process. The partition process includes calculating first values of a set of pixels between a first partition and a second partition in a current block, using a first motion vector for the first partition; calculating second values of the set of pixels, using a second motion vector for the second partition; and calculating third values of the set of pixels by weighting the first values and the second values. When a ratio of a width to a height of the current block is larger than 4 or a ratio of the height to the width of the current block is larger than 4, the circuitry disables the partition process.

Image encoder and related non-transitory computer readable medium for image decoding

An encoder including circuitry and memory coupled to the circuitry. In a second type of residual coding among a first type of residual coding where an orthogonal transform is applied to a current block and the second type of residual coding where the orthogonal transform is skipped for the current block, wherein a first syntax used for the first type of residual coding is different from a second syntax used for the second type of residual coding, the circuitry: in a first loop process, derives a context index by using at least one of a plurality of surrounding coefficients; and encodes a plurality of coefficient information flags by CABAC with the derived context index; and in a second loop process of the plurality of loop processes, encodes a plurality of absolute value flags by CABAC with another context index.

Encoder for encoding a plurality of coefficient information flags and encoding a plurality of absolute value flags

An encoder includes circuitry, and memory coupled to the circuitry. The circuitry, in operation, for each of a plurality of sub-bitstreams having mutually different frame rates, encodes identification information into a header of a bitstream including the plurality of sub-bitstreams, the identification information indicating a temporal ID that is an identifier of a temporal layer related to a temporal scalability and corresponds to the sub-bitstream, and encodes level information indicating a conformance level of the sub-bitstream.

Encoder for encoding information of sub-bitstreams having mutually different frame rates

An encoder that switches whether or not to store a first parameter included in hypothetical reference decoder (HRD) parameters related to a decoding unit into a buffering period supplemental enhancement information (SEI) message according to a second flag stored into the buffering period SEI message. The second flag indicates whether or not the HRD parameters related to the decoding unit are present, and a value of the second flag being equal to a value of a first flag stored in a sequence parameter set. The first flag indicates whether or not the HRD parameters are present.

Encoder that switches whether or not to store a first parameter into a buffering period supplemental enhancement information message according to a flag

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Takahiro Nishi