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公开(公告)号：US20240275967A1
公开(公告)日：2024-08-15
申请号：US18604198
申请日：2024-03-13
发明人： Semih Esenlik , Max Blaeser , Zhijie Zhao , Han Gao , Anand Meher Kotra , Biao Wang , Elena Alexandrovna Alshina
IPC分类号： H04N19/119 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/184
CPC分类号： H04N19/119 , H04N19/105 , H04N19/176 , H04N19/184 , H04N19/159
摘要： A method of coding implemented by a decoding device, comprising obtaining a bitstream; obtaining a value of an indicator for a current block according to the bitstream; obtaining a value of a first parameter for the current block and a value of a second parameter for the current block, according to the value of the indicator and a predefined lookup table; obtaining a value of a sample distance for a sample which is located in the current block, according to the value of the first parameter and the value of the second parameter; obtaining a prediction value for the sample, according to the value of the sample distance for the sample.
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公开(公告)号：US20240251080A1
公开(公告)日：2024-07-25
申请号：US18628446
申请日：2024-04-05
发明人： Han Gao , Zhijie Zhao , Semih Esenlik , Anand Meher Kotra , Jianle Chen
IPC分类号： H04N19/119 , H04N19/176 , H04N19/184 , H04N19/96
CPC分类号： H04N19/119 , H04N19/176 , H04N19/184 , H04N19/96
摘要： The present disclosure provides apparatuses and methods for splitting an image into coding units. An image is divided into coding tree units (CTUs) which are hierarchically partitioned. Hierarchical partitioning includes multi-type partitioning such as binary tree or quad tree splitting. For CTUs completely within the image and CTUs on the boundary, respective multi-type partition depths are chosen. The present disclosure provides for multi-type partitioning flexibility in a boundary portion of the image.
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公开(公告)号：US12015771B2
公开(公告)日：2024-06-18
申请号：US17382550
申请日：2021-07-22
发明人： Anand Meher Kotra , Jianle Chen , Semih Esenlik , Biao Wang , Han Gao , Zhijie Zhao
IPC分类号： H04N19/117 , H04N19/105 , H04N19/132 , H04N19/176
CPC分类号： H04N19/117 , H04N19/105 , H04N19/132 , H04N19/176
摘要： Embodiments of the present disclosure relate to the field of picture processing. Especially, the embodiments are directed to improving the deblocking filter of an image coding device. During the deblocking, at most a number MA of sample values of the first coding block adjacent to the block edge are modified and at most a number MB of sample values of the second coding block adjacent to the block edge are modified; or at most a number MA of sample values of the second coding block adjacent to the block edge are modified and at most a number MB of sample values of the first coding block adjacent to the block edge are modified, MA≠MB.
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公开(公告)号：US20240107077A1
公开(公告)日：2024-03-28
申请号：US18476309
申请日：2023-09-28
发明人： Anand Meher Kotra , Semih Esenlik , Biao Wang , Han Gao , Zhijie Zhao , Jianle Chen
IPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/80
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/80
摘要： An image processing device for use in an image encoder and/or an image decoder, for deblocking a block edge between a first block and a second block of an image encoded with a block code, is provided. The image processing device comprises a filter for filtering the block edge, configured to, for at least some of the pixels to be filtered, within a deblocking range from the block edge, the deblocking range being perpendicular to the block edge, determine a filtered pixel value from an original pixel value of the pixel and at least one further pixel value, determine a clipping value of the pixel, dependent upon a distance of the pixel from the block edge, and clip the filtered pixel value, using the clipping value resulting in a deblocked pixel value.
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公开(公告)号：US20240098294A1
公开(公告)日：2024-03-21
申请号：US18472049
申请日：2023-09-21
发明人： Semih Esenlik , Anand Meher Kotra , Zhijie Zhao , Han Gao
IPC分类号： H04N19/513 , H04N19/57
CPC分类号： H04N19/513 , H04N19/57
摘要： The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.
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公开(公告)号：US11910027B2
公开(公告)日：2024-02-20
申请号：US17955229
申请日：2022-09-28
发明人： Han Gao , Semih Esenlik , Jianle Chen , Anand Meher Kotra , Biao Wang , Zhijie Zhao
IPC分类号： H04N19/96 , H04N19/119 , H04N19/132 , H04N19/176 , H04N19/70
CPC分类号： H04N19/96 , H04N19/119 , H04N19/132 , H04N19/176 , H04N19/70
摘要： The present disclosure relates generally to video coding and picture partitioning methods. In particular, the disclosure is concerned with relations between partition constraint elements, by setting partitioning rules for different picture partitioning methods. The disclosure provides devices and corresponding methods for generating or processing a bitstream including encoded pictures, particularly for setting and including partition constraint element into the bitstream. One of the devices is configured to determine a minimum luma size of a leaf block resulting from quadtree splitting (MinQtSizeY), determine a maximum luma size of a coding block where partitioning using a binary tree splitting is allowed (MaxBtSizeY) based on the MinQtSizeY, and include information for the determined MinQtSizeY into the bitstream.
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7.发明公开公开(公告)号：US20240037802A1
公开(公告)日：2024-02-01
申请号：US18479507
申请日：2023-10-02
发明人： Timofey Mikhailovich Solovyev , Biao Wang , Elena Alexandrovna Alshina , Han Gao , Panqi Jia , Esin Koyuncu , Alexander Alexandrovich Karabutov , Mikhail Vyacheslavovich Sosulnikov , Semih Esenlik , Sergey Yurievich Ikonin
CPC分类号： G06T9/002 , G06T3/4046
摘要： This application provides methods and apparatuses for processing of picture data or picture feature data using a neural network with two or more layers. The present disclosure may be applied in the field of artificial intelligence (AI)-based video or picture compression technologies, and in particular, to the field of neural network-based video compression technologies. According to some embodiments, position within the neural network, at which auxiliary information may be entered for processing is selectable based on a gathering condition. The gathering condition may assess whether some prerequisite is fulfilled. Some of the advantages may include better performance in terms of rate and/or disclosure due to the effect of increased flexibility in neural network configurability.
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公开(公告)号：US11856228B2
公开(公告)日：2023-12-26
申请号：US17399203
申请日：2021-08-11
发明人： Biao Wang , Anand Meher Kotra , Semih Esenlik , Han Gao , Jianle Chen
IPC分类号： H04N19/66 , H04N19/80 , H04N19/176 , H04N19/593
CPC分类号： H04N19/66 , H04N19/176 , H04N19/593 , H04N19/80
摘要： A deblocking method is provided for deblocking a sub-partition boundary within a coding block during image encoding and/or image decoding process. The coding block is coded in an intra prediction mode and the coding block is partitioned into sub-partitions comprising a first sub-partition and a second sub-partition that is adjacent to the first sub-partition. The method comprises: determining a maximum filter length to be 1 for a first/second sub-partition when a width of the first or second sub-partition is 4 samples, or when a height of the first or second sub-partition is 4 samples; modifying a value of up to one sample of the first or second sub-partition, wherein the value of the up to one sample is obtained from a row or a column of the first or second sub-partition that is perpendicular to and adjacent to the sub-partitions boundary between the first sub-partition and the second sub-partition.
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公开(公告)号：US11758137B2
公开(公告)日：2023-09-12
申请号：US17370805
申请日：2021-07-08
发明人： Han Gao , Jianle Chen , Semih Esenlik , Anand Meher Kotra , Biao Wang
IPC分类号： H04N19/122 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/61 , H04N19/625 , G06T9/00 , G06T9/40
CPC分类号： H04N19/122 , G06T9/007 , G06T9/40 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/61 , H04N19/625
摘要： A method of video coding a block of a picture includes: obtaining a residual signal resulting from inter- or intra-picture prediction; inferring use of a DCT2 transform core for a sequence of the residual signal; processing the transformation of the block using the inferred transform core.
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10.发明公开公开(公告)号：US20230209043A1
公开(公告)日：2023-06-29
申请号：US18068235
申请日：2022-12-19
发明人： Anand Meher KOTRA , Jianle Chen , Semih Esenlik , Biao Wang , Han Gao , Zhijie Zhao
IPC分类号： H04N19/105 , H04N19/129 , H04N19/176 , H04N19/169
CPC分类号： H04N19/105 , H04N19/129 , H04N19/176 , H04N19/1883
摘要： Embodiments provide methods and devices (encoder and/or decoder) of coding a picture. A History Based Motion Vector Prediction (HMVP) list for a current Coding Tree Unit (CTU) row within a tile of a picture is initialized and a CTU of the current CTU row is processed based on the initialized HMVP list.
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