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公开(公告)号：EP3820148A1
公开(公告)日：2021-05-12
申请号：EP19830323.2
申请日：2019-07-02
发明人： LIAO, Ru Ling , LIM, Chong Soon , SUN, Hai Wei , TEO, Han Boon , LI, Jing Ya , SHASHIDHAR, Sughosh Pavan , ABE, Kiyofumi , NISHI, Takahiro , TOMA, Tadamasa
IPC分类号： H04N19/103 , H04N19/119 , H04N19/157 , H04N19/176 , H04N19/70
摘要： An encoder (100) includes: circuitry; and memory coupled to the circuitry. The circuitry, in operation, writes a first parameter into a bitstream, the first parameter indicating, as a prediction mode, one of (i) a multiple prediction mode in which a prediction image is generated by overlapping an inter prediction image of a current block and an intra prediction image of the current block and (ii) one of a plurality of prediction modes including a triangular mode in which a prediction image is generated by splitting the current block into triangular regions, and encodes the current block according to the prediction mode.
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公开(公告)号：EP4181512A1
公开(公告)日：2023-05-17
申请号：EP23150320.2
申请日：2019-05-09
发明人： TOMA, Tadamasa , NISHI, Takahiro , ABE, Kiyofumi , KANOH, Ryuichi , LIM, Chong Soon , SHASHIDHAR, Sughosh Pavan , LIAO, Ru Ling , SUN, Hai Wei , TEO, Han Boon , LI, Jing Ya
IPC分类号： H04N19/119 , H04N19/176 , H04N19/70
摘要： An encoder (100) partitions into blocks using a set of block partition modes obtained by combining one or more block partition modes defining a partition type. The set of block partition modes includes a first partition mode defining the partition direction and number of partitions for partitioning a first block, and a second block partition mode defining the partition direction and number of partitions for partitioning a second block which is one of blocks obtained after the first block is partitioned. When the number of partitions of the first block partition mode is three, the second block is a center block among the blocks obtained after partitioning the first block, and the partition direction of the second block partition mode is same as the partition direction of the first block partition mode, the second block partition mode includes only a block partition mode indicating that the number of partitions is three.
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公开(公告)号：EP3852372A1
公开(公告)日：2021-07-21
申请号：EP19859808.8
申请日：2019-09-06
发明人： LI, Jing Ya , LIAO, Ru Ling , LIM, Chong Soon , TEO, Han Boon , SUN, Hai Wei , ABE, Kiyofumi , NISHI, Takahiro , TOMA, Tadamasa
IPC分类号： H04N19/537 , H04N19/577
摘要： An encoder (100) includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of gradient values in first and second ranges; derives, as a first parameter, a total sum of absolute values of sums of gradient values derived respectively for pairs of relative pixel positions; derives a pixel difference value between pixel values in the first and second ranges; inverts or maintains a plus or minus sign of the pixel difference value, according to a plus or minus sign of the sum of the gradient values indicating the sum of the gradient values in the first and second ranges; derives, as a second parameter, a total sum of pixel difference values each having the plus or minus sign inverted or maintained, the pixel difference values derived respectively for the relative pixel positions; and generates a prediction image using the first and second parameters.
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公开(公告)号：EP4351147A2
公开(公告)日：2024-04-10
申请号：EP24159854.9
申请日：2019-03-04
发明人： SHASHIDHAR, Sughosh Pavan , SUN, Hai Wei , LIM, Chong Soon , LIAO, Ru Ling , TEO, Han Boon , LI, Jing Ya , NISHI, Takahiro , ABE, Kiyofumi , KANOH, Ryuichi , TOMA, Tadamasa
IPC分类号： H04N19/70
摘要： An encoder (100) that encodes a current block in a picture includes circuitry and memory. Using the memory the circuitry: splits the current block into a first sub block, a second sub block, and a third sub block in a first direction, the second sub block being located between the first sub block and the third sub block; prohibits splitting the second sub block into two partitions in the first direction; and encodes the first sub block, the second sub block, and the third sub block.
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公开(公告)号：EP3826305A1
公开(公告)日：2021-05-26
申请号：EP19838553.6
申请日：2019-07-05
发明人： LI, Jing Ya , LIM, Chong Soon , SHASHIDHAR, Sughosh Pavan , LIAO, Ru Ling , SUN, Ha Wei , TEO, Han Boon , ABE, Kiyofumi , TOMA, Tadamasa , NISHI, Takahiro
IPC分类号： H04N19/52
摘要： An encoder (100) includes circuitry (160) and memory (162) connected to the circuitry (160). In operation, the circuitry (160): selects a first table to be used for a current partition to be encoded in an image of a video, from among tables that are used to correct a base motion vector in a predetermined direction using a correction value specified by an index, the tables including correction values having varying differences between indexes; writes a parameter indicating a first index to be selected from among indexes included in the first table; and encodes the current partition using the base motion vector corrected using a correction value specified by the first index.
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公开(公告)号：EP4054191A1
公开(公告)日：2022-09-07
申请号：EP22170160.0
申请日：2019-09-06
发明人： LI, Jing Ya , LIAO, Ru Ling , LIM, Chong Soon , TEO, Han Boon , SUN, Hai Wei , ABE, Kiyofumi , NISHI, Takahiro , TOMA, Tadamasa
IPC分类号： H04N19/42 , H04N19/577
摘要： An encoder (100) includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of gradient values in first and second ranges; derives, as a first parameter, a total sum of absolute values of sums of gradient values derived respectively for pairs of relative pixel positions; derives a pixel difference value between pixel values in the first and second ranges; inverts or maintains a plus or minus sign of the pixel difference value, according to a plus or minus sign of the sum of the gradient values indicating the sum of the gradient values in the first and second ranges; derives, as a second parameter, a total sum of pixel difference values each having the plus or minus sign inverted or maintained, the pixel difference values derived respectively for the relative pixel positions; and generates a prediction image using the first and second parameters.
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公开(公告)号：EP4027645A1
公开(公告)日：2022-07-13
申请号：EP20860164.1
申请日：2020-09-02
发明人： LI, Jing Ya , LIM, Chong Soon , TEO, Han Boon , KUO, Che Wei , SUN, Hai Wei , WANG, Chu Tong , ABE, Kiyofumi , NISHI, Takahiro , TOMA, Tadamasa , KATO, Yusuke
IPC分类号： H04N19/52 , H04N19/593
摘要： An encoder (100) includes circuitry and memory coupled to the circuitry. The circuitry, in operation: determines whether a size of a current block, which is a unit for which a vector candidate list including vector candidates is generated, is less than or equal to a threshold (S3001); when the size of the current block is less than or equal to the threshold (YES in S3001), generates the vector candidate list by registering a history-based motion vector predictor (HMVP) vector candidate in the vector candidate list from an HMVP table without performing a first pruning process (S3002); when the size of the current block is greater than the threshold (NO in S3001), generates the vector candidate list by performing the first pruning process and registering the HMVP vector candidate in the vector candidate list from the HMVP table (S3003); and encodes the current block using the vector candidate list (S3004).
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公开(公告)号：EP3907990A1
公开(公告)日：2021-11-10
申请号：EP19907263.8
申请日：2019-12-23
发明人： LIM, Chong Soon , SUN, Hai Wei , TEO, Han Boon , LI, Jing Ya , KUO, Che-Wei , ABE, Kiyofumi , TOMA, Tadamasa , NISHI, Takahiro , KATO, Yusuke
IPC分类号： H04N19/117
摘要： An encoder (100) that encodes a current block to be encoded in an image is provided. The encoder includes: processor (a1); and memory (a2) coupled to the processor (a1), in which, in operation, the processor (a1): generates a first prediction image based on a motion vector, the first prediction image being an image with full-pel precision; generates a second prediction image using an interpolation filter by interpolating a value at a fractional-pel position between full-pel positions included in the first prediction image; and encodes the current block based on the second prediction image, and in the using of the interpolation filter, the interpolation filter is switched between a first interpolation filter and a second interpolation filter differing in a total number of taps from the first interpolation filter.
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公开(公告)号：EP4351147A3
公开(公告)日：2024-04-17
申请号：EP24159854.9
申请日：2019-03-04
发明人： SHASHIDHAR, Sughosh Pavan , SUN, Hai Wei , LIM, Chong Soon , LIAO, Ru Ling , TEO, Han Boon , LI, Jing Ya , NISHI, Takahiro , ABE, Kiyofumi , KANOH, Ryuichi , TOMA, Tadamasa
IPC分类号： H04N19/119 , H04N19/157 , H04N19/176 , H04N19/463 , H04N19/70
CPC分类号： H04N19/119 , H04N19/176 , H04N19/157 , H04N19/463 , H04N19/70
摘要： An encoder (100) that encodes a current block in a picture includes circuitry and memory. Using the memory the circuitry: splits the current block into a first sub block, a second sub block, and a third sub block in a first direction, the second sub block being located between the first sub block and the third sub block; prohibits splitting the second sub block into two partitions in the first direction; and encodes the first sub block, the second sub block, and the third sub block.
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公开(公告)号：EP4011086A1
公开(公告)日：2022-06-15
申请号：EP20760942.1
申请日：2020-08-07
发明人： SUN, Hai Wei , LIM, Chong Soon , LI, Jing Ya , TEO, Han Boon , KUO, Che-Wei , WANG, Chu Tong , TOMA, Tadamasa , NISHI, Takahiro , ABE, Kiyofumi , KATO, Yusuke
IPC分类号： H04N19/82 , H04N19/426
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