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公开(公告)号：US20240364919A1
公开(公告)日：2024-10-31
申请号：US18766320
申请日：2024-07-08
申请人： TENCENT AMERICA lLLC
发明人： Byeongdoo CHOI , Weiwei Feng , Shan Liu
IPC分类号： H04N19/563 , H04N19/119 , H04N19/17 , H04N19/46 , H04N19/51 , H04N19/597 , H04N19/70 , H04N19/91
CPC分类号： H04N19/563 , H04N19/119 , H04N19/17 , H04N19/46 , H04N19/51 , H04N19/597 , H04N19/70 , H04N19/91
摘要： A method of encoding a current picture includes based on a first determination indicating that the padding is not applied, encoding the plurality of sub-regions without padding; based on the first determination indicating that the padding is applied, making a second determination that the padding comprises wrap-around padding; based on the second determination indicating that the padding does not comprise wrap-around padding, applying repetition padding to the plurality of sub-regions; based on the second determination indicating that the padding comprises the wrap-around padding, obtaining an offset value from the picture partitioning information and encoding the plurality of sub-regions based on the wrap-around padding and the offset value; generating picture partitioning information based on the first determination and the second determination; and encoding the current picture based on the encoded plurality of sub-regions and the picture partitioning information.
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公开(公告)号：US20240364894A1
公开(公告)日：2024-10-31
申请号：US18604341
申请日：2024-03-13
发明人： Michael Horowitz
IPC分类号： H04N19/139 , C12N9/02 , C12P7/14 , C12P17/14 , H04N19/103 , H04N19/105 , H04N19/117 , H04N19/137 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/196 , H04N19/436 , H04N19/44 , H04N19/46 , H04N19/50 , H04N19/61 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/91
CPC分类号： H04N19/139 , C12N9/0071 , C12P7/14 , C12P17/14 , C12Y114/00 , H04N19/103 , H04N19/105 , H04N19/117 , H04N19/137 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/196 , H04N19/436 , H04N19/44 , H04N19/46 , H04N19/50 , H04N19/61 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/91
摘要： Described is picture segmentation through columns and slices in video encoding and decoding. A video picture is divided into a plurality of columns, each column covering only a part of the video picture in a horizontal dimension. All coded tree blocks (“CTBs”) belonging to a slice may belong to one or more columns. The columns may be used to break the same or different prediction or in-loop filtering mechanisms of the video coding, and the CTB scan order used for encoding and/or decoding may be local to a column. Column widths may be indicated in a parameter set and/or may be adjusted at the slice level. At the decoder, column width may be parsed from the bitstream, and slice decoding may occur in one or more columns.
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公开(公告)号：US20240364891A1
公开(公告)日：2024-10-31
申请号：US18765931
申请日：2024-07-08
发明人： Valeri GEORGE , Benjamin BROSS , Heiner KIRCHHOFFER , Detlev MARPE , Tung NGUYEN , Matthias PREISS , Mischa SIEKMANN , Jan STEGEMANN , Thomas WIEGAND
IPC分类号： H04N19/13 , H03M7/42 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/91
CPC分类号： H04N19/13 , H03M7/42 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/91
摘要： A decoder includes an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initialization value.
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公开(公告)号：US20240357162A1
公开(公告)日：2024-10-24
申请号：US18306142
申请日：2023-04-24
发明人： Peer Berger , Shay Landis , Gideon Shlomo Kutz
IPC分类号： H04N19/587 , G06T17/00 , H04N19/124 , H04N19/597 , H04N19/70 , H04N19/91
CPC分类号： H04N19/587 , G06T17/00 , H04N19/124 , H04N19/597 , H04N19/70 , H04N19/91
摘要： A device may encode a first set of pictures of the video data to generate first encoded video data; generate first error correction data based on the first encoded video data; transmit the first error correction data and the first encoded video data to a receiving device; receive, from the receiving device, a decimation pattern indication that indicates a decimation pattern determined based on the first set of pictures, the decimation pattern being a pattern of encoded video data non-transmission; encode a second set of pictures of the video data to generate second encoded video data; generate second error correction data based on the second encoded video data; apply the decimation pattern to the second encoded video data to generate decimated video data; and transmit the second error correction data and the decimated video data to the receiving device.
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公开(公告)号：US12113981B2
公开(公告)日：2024-10-08
申请号：US18334308
申请日：2023-06-13
IPC分类号： H04N19/13 , H04N19/176 , H04N19/18 , H04N19/91
CPC分类号： H04N19/13 , H04N19/176 , H04N19/18 , H04N19/91
摘要： An example device for binarizing video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: calculate a local sum of absolute values (locSumAbs value) of neighboring coefficients to a current coefficient of a current block of video data; derive a shift value from the locSumAbs value; normalize the locSumAbs value using the shift value; determine a Rice parameter using the normalized locSumAbs value; and binarize or inverse binarize the current coefficient using the Rice parameter. In this manner, these techniques may allow for more appropriate Rice parameter value selection when binarizing high bitdepth data in conjunction with performing context-adaptive binary arithmetic coding (CABAC).
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公开(公告)号：US20240333921A1
公开(公告)日：2024-10-03
申请号：US18740370
申请日：2024-06-11
发明人： Sun Young LEE
IPC分类号： H04N19/11 , H04N19/147 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/463 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/91
CPC分类号： H04N19/11 , H04N19/147 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/198 , H04N19/463 , H04N19/593 , H04N19/70 , H04N19/91 , H04N19/61
摘要： The present invention relates to an intra prediction mode mapping method and a device using the method. The intra prediction mode includes: decoding flag information providing information regarding whether an intra prediction mode of a plurality of candidate intra prediction modes for the current block is the same as the intra prediction mode for the current block, and decoding a syntax component including information regarding the intra prediction mode for the current block in order to induce the intra prediction mode for the current block if the intra prediction mode from among the plurality of candidate intra prediction modes for the current block is not the same as the intra prediction mode for the current block. Thus, it is possible to increase the efficiency with which are images are decoded
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公开(公告)号：US20240323411A1
公开(公告)日：2024-09-26
申请号：US18731193
申请日：2024-05-31
发明人： Ossi Kalevo
IPC分类号： H04N19/186 , H04N19/463 , H04N19/91
CPC分类号： H04N19/186 , H04N19/463 , H04N19/91
摘要： A method of encoding input data to generate corresponding encoded data is provided. The method includes encoding the input data into a plurality of symbols in the encoded data, wherein the plurality of symbols represent data as defined by at least one palette included in the encoded data. The method further includes compressing data representative of the at least one palette into compressed palette data in a lossless manner for inclusion into the encoded data, wherein palette entry values of the at least one palette are provided consecutively within the encoded data.
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公开(公告)号：US20240298042A1
公开(公告)日：2024-09-05
申请号：US18660921
申请日：2024-05-10
发明人： Woo-Shik Kim , Do-Kyoung Kwon , Minhua Zhou
IPC分类号： H04N19/86 , H04N19/117 , H04N19/186 , H04N19/463 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/91
CPC分类号： H04N19/86 , H04N19/117 , H04N19/186 , H04N19/463 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/91
摘要： Techniques for signaling of sample adaptive offset (SAO) information that may reduce the coding rate for signaling such information in the compressed bit stream are provided. More specifically, techniques are provided that allow SAO information common to two or more of the color components to be signaled using one or more syntax elements (flags or indicators) representative of the common information. These techniques reduce the need to signal SAO information separately for each color component.
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公开(公告)号：US12081762B2
公开(公告)日：2024-09-03
申请号：US17877527
申请日：2022-07-29
发明人： Kiran Misra , Christopher A. Segall
IPC分类号： H04N19/00 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/15 , H04N19/159 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/593 , H04N19/70 , H04N19/86 , H04N19/91 , H04N19/11 , H04N19/182
CPC分类号： H04N19/13 , H04N19/117 , H04N19/124 , H04N19/15 , H04N19/159 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/593 , H04N19/70 , H04N19/86 , H04N19/91 , H04N19/11 , H04N19/182
摘要： A decoder receives a bitstream containing quantized coefficients representative of blocks of video representative of a plurality of pixels and decodes the bitstream using context adaptive binary arithmetic coding. The context adaptive binary arithmetic coding decodes the current syntax element using the first mode if the current syntax element is intra-coded and selecting between a first set of probable modes and a second set of probable modes, where the first set of probable modes are more likely than the second set of probable modes. The context adaptive binary arithmetic coding decodes the current syntax element using the second mode if the current syntax element is intra-coded and if selecting among one of the second set of probable modes.
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公开(公告)号：US20240292032A1
公开(公告)日：2024-08-29
申请号：US18659567
申请日：2024-05-09
发明人： Yusuke KATO , Takahiro NISHI , Tadamasa TOMA , Kiyofumi ABE
IPC分类号： H04N19/61 , H04N19/103 , H04N19/13 , H04N19/136 , H04N19/176 , H04N19/46 , H04N19/70 , H04N19/91
CPC分类号： H04N19/61 , H04N19/13 , H04N19/176 , H04N19/46 , H04N19/70 , H04N19/91 , H04N19/103 , H04N19/136
摘要： An encoder includes circuitry and memory. In both of a first type of residual coding where an orthogonal transform is applied to a current block and a second type of residual coding where the orthogonal transform is skipped, wherein when a number of CABAC processes is within an allowable range, the circuitry encodes coefficient information flags by CABAC, each of the coefficient information flags relating to a coefficient included in the current block; and otherwise, the circuitry skips the encoding of the coefficient information flags; and the circuitry encodes a remainder value of the coefficient with Golomb-Rice code when the coefficient information flags are encoded; and the circuitry encodes a value of the coefficient with the Golomb-Rice code when the plurality of coefficient information flags are not encoded, wherein the coefficient information flags are partially different between the first type of residual coding and the second type of residual coding.
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