-
公开(公告)号：US20240080494A1
公开(公告)日：2024-03-07
申请号：US18370081
申请日：2023-09-19
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Kenneth ANDERSSON , Jack ENHORN , Zhi ZHANG
IPC: H04N19/80 , H04N19/11 , H04N19/117 , H04N19/12 , H04N19/132 , H04N19/167 , H04N19/176 , H04N19/61
CPC classification number: H04N19/80 , H04N19/11 , H04N19/117 , H04N19/12 , H04N19/132 , H04N19/167 , H04N19/176 , H04N19/61
Abstract: A method for deblocking at least one boundary of a coding unit. The method includes determining that the coding unit uses a sub-block transform, wherein the sub-block transform generates a transform sub-block boundary within the coding unit, thereby forming at least a transform sub-block within the coding unit; as a result of determining that the coding unit uses the sub-block transform, determining a maximum filter length based on a dimension of the transform sub-block within the coding unit, wherein the maximum filter length indicates a maximum number of samples to modify when deblocking a boundary of the coding unit; and deblocking the boundary of the coding unit based on the determined maximum filter length.
-
公开(公告)号：US20240073454A1
公开(公告)日：2024-02-29
申请号：US18484064
申请日：2023-10-10
Applicant: TENCENT AMERICA LLC
IPC: H04N19/625 , G06F7/78 , G06F17/16 , H04N19/12
CPC classification number: H04N19/625 , G06F7/78 , G06F17/16 , H04N19/12
Abstract: A method of decoding or encoding including receiving information regarding a video sequence for encoding or decoding, determining, for the encoding or decoding of the video sequence, whether to use a first transform core matrix that is of a first size type or a second transform core matrix that is of a second size type, and based on the determining, transmitting information that causes the video sequence to be encoded or decoded using the determined first transform core matrix or second transform core matrix.
-
公开(公告)号：US20240064307A1
公开(公告)日：2024-02-22
申请号：US18501526
申请日：2023-11-03
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/132 , H04N19/105 , H04N19/117 , H04N19/12 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/70 , H04N19/82
CPC classification number: H04N19/132 , H04N19/105 , H04N19/117 , H04N19/12 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/70 , H04N19/82
Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block using a matrix based intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, where the performing the conversion includes deriving, according to a rule, boundary samples by applying a left bit shift operation or a right bit shift operation on a sum of at least one reference boundary sample, and where the rule determines whether to apply the left bit shift or the right bit shift operation.
-
公开(公告)号：US20240064301A1
公开(公告)日：2024-02-22
申请号：US18501251
申请日：2023-11-03
Applicant: Electronics and Telecommunications Research Institute , RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
Inventor： Jung Won KANG , Ha Hyun LEE , Sung Chang LIM , Jin Ho LEE , Hui Yong KIM , Byeung Woo JEON , Jee Yoon PARK
IPC: H04N19/12 , H04N19/176 , H04N19/46 , H04N19/61
CPC classification number: H04N19/12 , H04N19/176 , H04N19/46 , H04N19/619
Abstract: The present specification discloses a method of decoding an image. The method of decoding an image according to the method includes: obtaining transform skip information of a current block from a bitstream; obtaining multiple transform selection information of the current block on the basis of the transform skip information from the bitstream; and performing inverse transform on the current block on the basis of the multiple transform selection information, wherein the multiple transform selection information is used to set each of a horizontal transform type and a vertical transform type.
-
公开(公告)号：US20240048690A1
公开(公告)日：2024-02-08
申请号：US18489457
申请日：2023-10-18
Applicant: NIPPON HOSO KYOKAI
Inventor： Shunsuke IWAMURA , Atsuro ICHIGAYA , Shinichi SAKAIDA
IPC: H04N19/105 , H04N19/176 , H04N19/147 , H04N19/625 , H04N19/12 , H04N19/593 , H04N19/46 , H04N19/124 , H04N19/44 , H04N19/117 , H04N19/61
CPC classification number: H04N19/105 , H04N19/176 , H04N19/147 , H04N19/625 , H04N19/12 , H04N19/593 , H04N19/46 , H04N19/124 , H04N19/45 , H04N19/117 , H04N19/619
Abstract: An image encoding device for block-dividing and encoding an original image of a frame unit constituting a moving image is disclosed that includes a predictor circuitry configured to generate a predicted image, a weighted average processor configured to generate a block of a new predicted image, a prediction residual signal generator circuitry configured to calculate an error of each prediction signal of the block of the predicted image and to generate a prediction residual signal, a sub-block divider circuitry configured to divide the prediction residual signal configured to divide the predict residual signal, and a transformation selection applier circuitry configured to selectively apply a plurality of types of transformation processes for a divided sub-block of the prediction residual signal.
-
Patent Agency Ranking
公开(公告)号：US20240031560A1
公开(公告)日：2024-01-25
申请号：US18033649
申请日：2021-11-10
Applicant: InterDigital CE Patent Holdings, SAS
Inventor： Ya CHEN , Gagan Bihari RATH , Karam NASER , Antoine ROBERT
IPC: H04N19/11 , H04N19/119 , H04N19/176 , H04N19/172 , H04N19/61 , H04N19/132 , H04N19/12 , H04N19/105
CPC classification number: H04N19/11 , H04N19/119 , H04N19/176 , H04N19/172 , H04N19/61 , H04N19/132 , H04N19/12 , H04N19/105
Abstract: In one implementation, when coding a block in the intra prediction mode, the block can be split into two sub-partitions by a geometrically located straight line. Each geometric partition within the CU is intra predicted using its own intra mode with its available reference sample. One sub-partition copies and uses the intra prediction mode from the parent block, and another sub-partition uses another implicit or explicit signaled intra prediction mode. After predicting geometric partition, the sample values along the split boundary are adjusted using a blending process with adaptive weights. The geometric partition based intra prediction could be applied for one angular intra prediction mode, or only for one negative-directional intra prediction mode, or only for one specific intra prediction mode (e.g., mode 34). The transform selection or other intra coding tools (i.e., intra sub-partition) can be adapted for the geometric partition based intra prediction.
-
公开(公告)号：US11882274B2
公开(公告)日：2024-01-23
申请号：US17585741
申请日：2022-01-27
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/132 , H04N19/11 , H04N19/12 , H04N19/124 , H04N19/593 , H04N19/61
CPC classification number: H04N19/11 , H04N19/12 , H04N19/124 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/593 , H04N19/61 , H04N19/132
Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a video unit of a video and a coded representation of the video, a default intra prediction mode for the video unit coded using a certain intra prediction mode such that a prediction block of the current video block is generated without extrapolating neighboring pixels of the current video block along a direction; and performing the conversion based on the determining.
-
公开(公告)号：US11870992B2
公开(公告)日：2024-01-09
申请号：US17732693
申请日：2022-04-29
Inventor： Ryuichi Kanoh , Tadamasa Toma , Kiyofumi Abe , Takahiro Nishi
IPC: H04N19/12 , H04N19/61 , H04N19/154 , H04N19/157
CPC classification number: H04N19/12 , H04N19/154 , H04N19/157 , H04N19/61
Abstract: An encoder that encodes a video includes a processor and memory. Using the memory, the processor: derives a prediction error of an image included in the video, by subtracting a prediction image of the image from the image; determines a secondary transform basis based on a primary transform basis, the primary transform basis being a transform basis for a primary transform to be performed on the prediction error, the secondary transform basis being a transform basis for a secondary transform to be performed on a result of the primary transform; performs the primary transform on the prediction error using the primary transform basis; performs the secondary transform on a result of the primary transform using the secondary transform basis; performs quantization on a result of the secondary transform; and encodes a result of the quantization as data of the image.
-
公开(公告)号：US11856235B2
公开(公告)日：2023-12-26
申请号：US17942845
申请日：2022-09-12
Inventor： Zhipin Deng , Ye-Kui Wang , Li Zhang , Kai Zhang
IPC: H04N19/70 , H04N19/17 , H04N19/186 , H04N19/117 , H04N19/136 , H04N19/169 , H04N19/30 , H04N19/12 , H04N19/157 , H04N19/176 , H04N19/124 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/60 , H04N19/85
CPC classification number: H04N19/70 , H04N19/117 , H04N19/12 , H04N19/124 , H04N19/132 , H04N19/136 , H04N19/157 , H04N19/17 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/188 , H04N19/1887 , H04N19/30 , H04N19/60 , H04N19/85
Abstract: Methods, systems and apparatus for video processing are described. One example video processing method includes performing a conversion between a video including a video region and a bitstream of the video according to a rule, wherein the rule specifies that an adaptive loop filtering operation is allowed for the video region in response to an absence of one or more adaptation parameter set (APS) network abstraction layer (NAL) units that include adaptive loop filtering data.
-
公开(公告)号：US11856210B2
公开(公告)日：2023-12-26
申请号：US17342792
申请日：2021-06-09
Applicant: V-NOVA INTERNATIONAL LIMITED
Inventor： Ivan Damnjanovic , Gaurav Mittal
IPC: H04N19/30 , H04N19/122 , H04N19/146 , H04N19/18 , H04N19/136 , H04N19/12 , H04N19/16 , H04N19/33 , H04N19/176 , H04N19/132
CPC classification number: H04N19/30 , H04N19/12 , H04N19/122 , H04N19/132 , H04N19/136 , H04N19/146 , H04N19/16 , H04N19/176 , H04N19/18 , H04N19/33
Abstract: A set of reconstruction elements useable to reconstruct a representation of a signal at a relatively high level of quality using data based on a representation of the signal at a relatively low level of quality is obtained. The representation at the relatively high level of quality is arranged as an array comprising at least first and second rows of signal elements. A reconstruction element is associated with a respective signal element in the set. A set of data elements is derived based on the set of reconstruction elements. At least one of the data elements is derived from at least two reconstruction elements associated with signal elements from the first row and a different number of reconstruction elements associated with signal elements from the second row.
-
-
-
-
-
-
-
-
-
Search Results
1701
records
(took 0.026 seconds)
