Quantization Patents (Class 375/240.03)
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Patent number: 12294702Abstract: A method of decoding an encoded stream into a reconstructed output signal is provided, the method comprising: receiving a first output signal decoded from a first base encoded stream according to a first codec; receiving a level encoded stream; decoding the level encoded stream to obtain a set of residuals; and, combining the set of residuals with the first output signal to generate a reconstructed signal, wherein the decoding the level encoded stream comprises: decoding a set of quantized coefficients from the level encoded stream; dequantizing the set of quantized coefficients.Type: GrantFiled: July 6, 2020Date of Patent: May 6, 2025Assignee: V-NOVA INTERNATIONAL LIMITEDInventors: Guido Meardi, Simone Ferrara, Lorenzo Ciccarelli
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Patent number: 12294704Abstract: An image decoding apparatus comprises a decoder which decodes data indicating a plurality of values corresponding to a part of a quantization matrix; a generator which derives the plurality of values from the data and generates the matrix; and an inverse quantizing unit which performs the inverse quantizing on an object block using the matrix, wherein, if width or height of the matrix is larger than or equal to a predetermined size, the generating unit generates the matrix by associating a first value among the plurality of values with a first element corresponding to DC component in the matrix, associating a second value with a second element adjacent to the first element, and, for the elements other than the first and second elements, associating each of one or more values with a plurality of elements of the matrix.Type: GrantFiled: February 15, 2024Date of Patent: May 6, 2025Assignee: Canon Kabushiki KaishaInventor: Masato Shima
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Patent number: 12294703Abstract: An image decoding apparatus comprises a decoder which decodes data indicating a plurality of values corresponding to a part of a quantization matrix; a generator which derives the plurality of values from the data and generates the matrix; and an inverse quantizing unit which performs the inverse quantizing on an object block using the matrix, wherein, if width or height of the matrix is larger than or equal to a predetermined size, the generating unit generates the matrix by associating a first value among the plurality of values with a first element corresponding to DC component in the matrix, associating a second value with a second element adjacent to the first element, and, for the elements other than the first and second elements, associating each of one or more values with a plurality of elements of the matrix.Type: GrantFiled: February 15, 2024Date of Patent: May 6, 2025Assignee: Canon Kabushiki KaishaInventor: Masato Shima
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Point cloud encoding and decoding method and system, and point cloud encoder and point cloud decoder
Patent number: 12289450Abstract: A point cloud encoding method, including: obtaining attribute information about the attributes of a current point in a point cloud; processing the attribute information of the current point to obtain a residual value of the attribute information of the current point; using a target quantization manner, quantizing the residual value of the attribute information of the current point to obtain a quantized residual value of the attribute information of the current point; the target quantization manner comprises at least two of the following quantization manners: a first quantization manner, a second quantization manner, and a third quantization manner.Type: GrantFiled: March 23, 2023Date of Patent: April 29, 2025Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Hui Yuan, Xiaohui Wang, Ming Li, Lu Wang, Qi Liu -
Patent number: 12284386Abstract: A method of decoding video data comprises updating a coefficient statistic value based on one or more transform coefficients of a transform block (TB), wherein updating the coefficient statistic value comprises, for each respective transform coefficient of the one or more transform coefficients of the TB: performing a derivation process to determine a temporary value, wherein the derivation process is determined based at least in part on which encoding procedure of a plurality of encoding procedures is used to encode the respective transform coefficient, the plurality of encoding procedures including a context-based procedure for encoding the respective transform coefficient and encoding the respective transform coefficient as an absolute value; and setting the coefficient statistic value as an average of the coefficient statistic value and the temporary value; determining a history value based on the coefficient statistic value; determining a Rice parameter for a specific transform coefficient of the TB.Type: GrantFiled: June 29, 2023Date of Patent: April 22, 2025Assignee: QUALCOMM IncorporatedInventors: Dmytro Rusanovskyy, Marta Karczewicz
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Patent number: 12278948Abstract: A transform method and a decoder. The encoder determines a prediction mode parameter of a current block; determines a cross-component linear model (CCLM) parameter when the prediction mode parameter indicates that CCLM prediction is used for the current block to determine an intra prediction value; determines the intra prediction value of the current block according to the CCLM parameter, and calculates a residual value between the current block and the intra prediction value; determines a low-frequency non-separable transform (LFNST) transform kernel used for the current block according to the CCLM parameter, sets an LFNST index, and signals the LFNST index into a bitstream of a video, when LFNST is used for the current block; and transforms the residual value with the LFNST transform kernel.Type: GrantFiled: June 22, 2022Date of Patent: April 15, 2025Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Junyan Huo, Xinwei Li, Wenhan Qiao, Yanzhuo Ma, Shuai Wan, Fuzheng Yang
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Patent number: 12273543Abstract: 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.Type: GrantFiled: December 19, 2023Date of Patent: April 8, 2025Assignee: V-NOVA INTERNATIONAL LIMITEDInventors: Ivan Damnjanovic, Gaurav Mittal
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Patent number: 12273520Abstract: The encoding/decoding method and apparatus according to the present invention derives a residual coefficient of a residual block, calculates a quantization parameter for a residual block, performs dequantization on a residual coefficient using a quantization parameter, and performs inverse transform on a dequantized residual coefficient to reconstruct a residual sample of a residual block.Type: GrantFiled: September 15, 2023Date of Patent: April 8, 2025Assignee: HANWHA VISION CO., LTD.Inventors: Dong Gyu Sim, Sea Nae Park
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Patent number: 12273564Abstract: A video signal processing method may comprise the steps of: acquiring a first syntax element indicating whether a subblock-based merging mode is applied to a current block; acquiring a second syntax element indicating whether a merging mode using motion vector difference is applied to the current block, when the first syntax element indicates that the subblock-based merging mode is not applied to the current block; and acquiring a third syntax element indicating a candidate to be used in inter-prediction for the current block, among candidates contained in a mergence candidate list for the current block, when the second syntax element indicates that the merging mode using motion vector difference is applied to the current block.Type: GrantFiled: April 19, 2021Date of Patent: April 8, 2025Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.Inventors: Geonjung Ko, Dongcheol Kim, Juhyung Son, Jaehong Jung, Jinsam Kwak
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Patent number: 12273565Abstract: There is disclosed a method comprising obtaining a block of transform coefficients; searching a position of a last non-zero coefficient in a scan order in the block; selecting a secondary transform mode based on the position and encoding first syntax elements indicative of the selected secondary transform mode. A primary transform mode is selected based on the secondary transform mode. Second syntax elements indicative of the selected primary transform mode and third syntax elements defining the transform coefficients within the block are encoded. There is also disclosed a method comprising receiving encoded information related to a block of transform coefficients; decoding an indication of a position of a last non-zero coefficient in a scan order in the block and using the position to determine if an indication of a secondary transform mode is present in the bit stream.Type: GrantFiled: September 9, 2020Date of Patent: April 8, 2025Inventor: Jani Lainema
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Patent number: 12267497Abstract: A technique for performing video operations is provided. The technique includes characterizing a frame as a flash frame; setting the flash frame as a non-intra frame; prohibiting encoding of frames other than the flash frame with reference to the flash frame; and applying a positive quantization parameter (“QP”) offset to the flash frame.Type: GrantFiled: June 14, 2023Date of Patent: April 1, 2025Assignee: ATI Technologies ULCInventors: Jin Li, Crystal Yeong-Pian Sau
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Patent number: 12262005Abstract: An electronic apparatus performs a method of encoding and decoding video data. The method comprises: decoding a first coding block and a second coding block that shares a common edge on a first picture, wherein decoding the first coding block and the second coding block includes reconstructing a first residual block for the first coding block and a second residual block for the second coding block; determining that the first picture has a first resolution, a first reference picture corresponding to the first coding block has a second resolution, and a second reference picture corresponding to the second coding block has a third resolution; deriving a deblocking strength (bS) value based, at least in part, on the first resolution, second resolution, and the third resolution; and performing in-loop filtering on the reconstructed first residual block and the reconstructed second residual block using a deblocking filter in accordance with the derived bS value.Type: GrantFiled: May 23, 2022Date of Patent: March 25, 2025Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.Inventors: Yi-Wen Chen, Xiaoyu Xiu, Tsung-Chuan Ma, Hong-Jheng Jhu, Xianglin Wang, Bing Yu
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Point cloud encoding and decoding method and system, and point cloud encoder and point cloud decoder
Patent number: 12262013Abstract: A point cloud encoding method, including: obtaining attribute information about the attributes of a current point in a point cloud; processing the attribute information of the current point to obtain a residual value of the attribute information of the current point; using a target quantization manner, quantizing the residual value of the attribute information of the current point to obtain a quantized residual value of the attribute information of the current point; the target quantization manner comprises at least two of the following quantization manners: a first quantization manner, a second quantization manner, and a third quantization manner.Type: GrantFiled: March 23, 2023Date of Patent: March 25, 2025Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Hui Yuan, Xiaohui Wang, Ming Li, Lu Wang, Qi Liu -
Patent number: 12262056Abstract: A decoding unit decodes data corresponding to an N×M array of quantized coefficients from a bit stream. An inverse quantization unit derives orthogonal transform coefficients from the N×M array of quantized coefficients by using at least a quantization matrix. An inverse orthogonal transform unit performs inverse orthogonal transform on the orthogonal transform coefficients generated by the inverse quantization unit to generate prediction residuals corresponding to a block of a P×Q array of pixels. An inverse quantization unit derives the orthogonal transform coefficients by using at least a quantization matrix of an N×M array of elements, and the inverse orthogonal transform unit generates prediction residuals for the P×Q array of pixels having a size larger than the N×M array.Type: GrantFiled: March 13, 2024Date of Patent: March 25, 2025Assignee: Canon Kabushiki KaishaInventor: Masato Shima
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Patent number: 12262122Abstract: A method of decoding an image, includes obtaining at least one offset for a picture, deriving a variable for scaling for the picture based on the at least one offset, and performing inter prediction based on the variable for scaling for the picture. The at least one offset is defined with a direction of scaling.Type: GrantFiled: November 6, 2023Date of Patent: March 25, 2025Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.Inventor: Ki Baek Kim
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Patent number: 12262063Abstract: Systems and methods for decoding are described. A decoder system is configured to retrieve, from the grain array stored within the on-chip memory, noise pixel data associated with at least one reconstructed video pixel. The decoder system is configured to apply noise data to the at least one reconstructed video pixel to generate at least one output video pixel. The noise data is determined based on the noise pixel data.Type: GrantFiled: September 21, 2022Date of Patent: March 25, 2025Assignee: QUALCOMM INCORPORATEDInventors: Gopi Madhan Dabbadi, Rosali Patro, Shengqi Yang, Sandeep Nellikatte Srivatsa, Ashish Mishra
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Patent number: 12256149Abstract: A method of decoding an image, includes obtaining at least one offset for a picture, deriving a variable for scaling for the picture based on the at least one offset, and performing inter prediction based on the variable for scaling for the picture. The at least one offset is defined with a direction of scaling.Type: GrantFiled: November 6, 2023Date of Patent: March 18, 2025Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.Inventor: Ki Baek Kim
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Patent number: 12256084Abstract: A system includes a processing device to receive a video content, a quality metric, and a target bit rate for encoding the video content. The system includes encoding hardware to perform frame encoding on the video content and a controller coupled between the processing device and the encoding hardware. The controller is programmed with machine instructions to generate first QP values on a per-frame basis using a frame machine learning model with a first plurality of weights. The first plurality of weights depends at least in part on the quality metric and the target bit rate. The controller is further programmed to provide the first QP values to the encoding hardware for rate control of the frame encoding.Type: GrantFiled: January 12, 2023Date of Patent: March 18, 2025Assignee: Mellanox Technologies, Ltd.Inventors: Eshed Ram, Dotan David Levi, Assaf Hallak, Shie Mannor, Gal Chechik, Eyal Frishman, Ohad Markus, Dror Porat, Assaf Weissman
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Patent number: 12250378Abstract: A method and apparatus to improve compression efficiency in a video compression scheme enables separate control of a local chroma quantization parameter. The control can be used to disable a local chroma quantization parameter. One embodiment uses an existing local luma quantization parameter control flag for controlling local chroma quantization parameter. Another embodiment includes a separate local chroma quantization parameter control flag. Bitstream syntax is used to convey the flags.Type: GrantFiled: March 8, 2021Date of Patent: March 11, 2025Assignee: INTERDIGITAL CE PATENT HOLDINGS, SASInventors: Philippe De Lagrange, Karam Naser, Philippe Bordes, Fabrice Leleannec
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Patent number: 12250157Abstract: Aspects of the disclosure provide for congestion control mechanisms to reduce data transmission queues and to increase link utilization through precise congestion signals and reduction of control loop delay. A congestion control system (CC) system can utilize Back-To-Sender (BTS) packets over (round trip time) RTT control loop delay to react to congestion faster. The CC system can apply Proactive Ramp-up (PRU) to identify flow completions to occupy released bandwidth right on time, e.g., as bandwidth is made available. The CC system can perform supply matching (SM) through network calculus concepts to increase link utilization. The CC system can apply some or all of the use of BTS packets, PRU, and/or SM to reduce network latency and improve data flow completion time as compared with other approaches.Type: GrantFiled: April 19, 2023Date of Patent: March 11, 2025Assignee: Google LLCInventors: Serhat Arslan, Yuliang Li, Gautam Kumar, Nandita Dukkipati
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Patent number: 12249065Abstract: An analysis apparatus analyses a video image signal comprising successive frames of imaging an endoscopy procedure. A machine learning block analyses the video image signal using a machine learning technique that classifies regions of the frames as belonging to one of plural classes corresponding to respective types of image artefact. The classes include a motion blur class corresponding to motion blur of the image, at least one erroneous exposure class corresponding to a type of erroneous exposure of the image, and at least one noise artefact class corresponding to a type of image artefact that is noise. A quality score block derives quality scores representing image quality of the successive frames based on the classified regions.Type: GrantFiled: April 3, 2020Date of Patent: March 11, 2025Assignee: OXFORD UNIVERSITY INNOVATION LIMITEDInventors: Jens Rittscher, Sharib Ali, Adam Bailey, James Edward East, Barbara Braden, Felix Zhou, Xin Lu
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Patent number: 12250387Abstract: There is provided an information processing apparatus, an image processing apparatus, an encoding device, a decoding device, an information processing method, and a program that facilitate scalable decoding of attribute information. Regarding the attribute information about a point cloud representing a three-dimensional object, a process of classifying the respective points of the point cloud into prediction points that are the points at which difference values between the attribute information and predicted values are left, and reference points that are the points at which the attribute information is referred to during derivation of the predicted values is recursively repeated on the reference points, so that the attribute information is hierarchized.Type: GrantFiled: February 27, 2024Date of Patent: March 11, 2025Assignee: SONY GROUP CORPORATIONInventors: Tsuyoshi Kato, Satoru Kuma, Ohji Nakagami, Hiroyuki Yasuda, Koji Yano
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Patent number: 12244803Abstract: For a coding block of an image, a luma prediction block is generated, a luma residual block is generated, a quantized luma block is generated after transforming the luma residual block using a luma transform type, and the quantized luma block is entropy encoded. A chroma prediction block is generated, a chroma residual block is generated, an initial chroma transform type for the chroma residual block is determined as the luma transform type, a quantized chroma block is generated using the chroma residual block transformed by a final chroma transform type, and the quantized chroma block is entropy encoded. When the initial chroma transform type is other than a default transform type, the final chroma transform type is the initial chroma transform type or the default transform type, and quantized coefficients of the quantized chroma block depend upon quantized coefficients of the quantized luma block.Type: GrantFiled: January 25, 2021Date of Patent: March 4, 2025Assignee: GOOGLE LLCInventors: In Suk Chong, Hui Su, Aki Kuusela
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Patent number: 12244808Abstract: A method for encoding an image using intra prediction can include determining an intra prediction mode of a current block, generating a mode group indicator and a prediction mode index specifying the intra prediction mode of the current block, constructing a most probable mode (MPM) group including three intra prediction modes determined using a left and an above intra prediction mode of the current block. The method can further include generating a prediction block based on the intra prediction mode of the current block specified by the mode group indicator and the prediction mode index, generating a residual block of the current block, generating a quantization block by transforming and quantizing the residual block. The method can include scanning the quantized block using a scan pattern determined based on the intra prediction mode and the size of a transform unit, and entropy-encoding the scanned information of the quantized block.Type: GrantFiled: October 23, 2023Date of Patent: March 4, 2025Assignee: GENSQUARE LLCInventors: Soo Mi Oh, Moonock Yang
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Patent number: 12244806Abstract: A method for inverse quantization of a current block of a picture, the method comprising: receiving a bitstream; obtaining a joint chrominance component residual, JCCR, control flag from the bitstream; obtaining a chrominance mapping information from the bitstream based on the JCCR control flag; obtaining at least one chrominance quantization parameter, QP, offset from the bitstream based on the JCCR control flag; obtaining a QP value for the current chrominance block based on the obtained chrominance mapping information and the at least one obtained chrominance QP offset; performing inverse quantization on the current chrominance block by using the obtained QP value.Type: GrantFiled: March 22, 2022Date of Patent: March 4, 2025Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Roman Igorevich Chernyak, Sergey Yurievich Ikonin, Timofey Mikhailovich Solovyev, Alexander Alexandrovich Karabutov, Elena Alexandrovna Alshina
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Patent number: 12244783Abstract: Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.Type: GrantFiled: November 7, 2023Date of Patent: March 4, 2025Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.Inventor: Ki Baek Kim
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Patent number: 12244811Abstract: A method of visual media processing video, includes determining that palette mode is to be used for processing a first portion of a video block and intra block copy (IBC) mode is to be used for processing a second portion of the video block, and performing further processing of the first portion of the video block using the palette mode and the second portion of the video using the IBC mode, wherein indications of the first portion of the video block processed using the palette mode and indications of the second portion of the video block processed using the IBC mode are included in a palette index identifying the first portion of the video block and the second portion of the video block.Type: GrantFiled: September 9, 2021Date of Patent: March 4, 2025Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.Inventors: Weijia Zhu, Jizheng Xu, Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
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Patent number: 12238285Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise identifying a region by partitioning an image, and determining a prediction mode of the region on the basis of at least one of a size of the region, a partition shape, and a coding parameter of the region. The determined prediction mode of the region may be determined as a prediction mode of all coding blocks included in the region.Type: GrantFiled: October 23, 2023Date of Patent: February 25, 2025Assignees: Electronics and Telecommunications Research Institute, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Ha Hyun Lee, Jung Won Kang, Sung Chang Lim, Jin Ho Lee, Hui Yong Kim, Hae Chul Choi, Dae Hyeok Gwon
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Patent number: 12238261Abstract: Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.Type: GrantFiled: November 7, 2023Date of Patent: February 25, 2025Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.Inventor: Ki Baek Kim
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Patent number: 12238358Abstract: A remote image processing method, applied to a remote server, includes: obtaining a recommended bit rate, where the recommended bit rate matches an environment parameter of a network in which the remote server is located, and the network environment parameter is used to represent a capability of transmitting an amount of data by the network in a unit time; and generating, based on the recommended bit rate, adjustment parameters corresponding to different regions in a to-be-processed image, and processing the corresponding regions by using the adjustment parameters, to obtain a single-frame image used for display, so that an amount of data included in the single-frame image matches the recommended bit rate.Type: GrantFiled: October 7, 2022Date of Patent: February 25, 2025Assignee: Huawei Technologies Co., LtdInventors: Yin Huang, Huaping Xiong
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Patent number: 12238289Abstract: A method for deblocking a chroma block edge between a first chroma block of a first image block and a second chroma block of a second image block. The method includes a decision process which includes: determining a first chroma quantization parameter for the first chroma block based on a first luma quantization parameter of a first luma block of the first image block and a chroma QP mapping table for the first chroma block; determining a second chroma quantization parameter for the second chroma block based on a second luma quantization parameter of a second luma block of the second image block and a chroma QP mapping table for the second chroma block; determining an averaged and rounded chroma quantization parameter based on the first chroma quantization parameter and the second chroma quantization parameter; and determining a threshold parameter based on the averaged and rounded chroma quantization parameter.Type: GrantFiled: July 11, 2023Date of Patent: February 25, 2025Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Anand Meher Kotra, Elena Alexandrovna Alshina, Semih Esenlik, Biao Wang, Han Gao, Roman Igorevich Chernyak
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Patent number: 12238315Abstract: A decoder includes circuitry configured to receive a bitstream, determine whether a merge mode is enabled for a block, construct a merge candidate list including adding a non-adjacent diagonal spatial candidate to the merge candidate list, and reconstruct pixel data of the block and using the merge candidate list. Related apparatus, systems, techniques and articles are also described.Type: GrantFiled: October 4, 2019Date of Patent: February 25, 2025Assignee: OP Solutions LLCInventors: Hari Kalva, Borivoje Furht, Velibor Adzic
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Patent number: 12238278Abstract: An encoder includes memory and circuitry. The circuitry, using the memory, (i) selects a mode from among a plurality of modes each for deriving a motion vector, and derives a motion vector for a current block via the selected mode, and (ii) performs inter prediction encoding on the current block, using the derived motion vector, via one of a skip mode and a non-skip mode different from the skip mode. The plurality of modes include a plurality of first modes each for predicting the motion vector for the current block based on an encoded block neighboring the current block without encoding information indicating a motion vector into a stream. When a second mode included in the plurality of first modes is selected, the current block is encoded via the non-skip mode regardless of presence or absence of a residual coefficient.Type: GrantFiled: September 5, 2023Date of Patent: February 25, 2025Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICAInventors: Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Ryuichi Kanoh
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Patent number: 12231669Abstract: The present disclosure discloses a video decoding method and a video decoder. The method includes: parsing coding tree split information to obtain a current node; determining coordinates of an upper-left corner of a region covered by a current quantization group based on a depth N of the current node; obtaining a QP delta of a current CU in the region covered by the current quantization group; and obtaining a reconstructed picture of the current CU based on the QP delta of the current CU.Type: GrantFiled: June 28, 2022Date of Patent: February 18, 2025Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yin Zhao, Haitao Yang
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Patent number: 12231281Abstract: A method for indicating a frame structure, a method for updating a frame structure, and related devices are provided. The method for indicating a frame structure, performed by a first device, includes: determining a first frame structure based on user data to be transmitted; and when the first frame structure is different from a second frame structure corresponding to a second device, sending indication information, where the indication information is used to indicate the first frame structure.Type: GrantFiled: March 2, 2023Date of Patent: February 18, 2025Assignee: VIVO MOBILE COMMUNICATION CO., LTD.Inventors: Pu Yuan, Fei Qin, Dajie Jiang
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Patent number: 12231682Abstract: A method of video decoding includes decoding prediction information of a current block indicating a subset of combinations of processed reconstructed samples of a first component and corresponding offset values of a filter process to be applied to a second color component, and determining an offset value of the filter process to apply to reconstructed samples of the second color component based on a combination of processed reconstructed samples of the first component. The determined offset value is based on whether the combination of the processed reconstructed samples of the first color component corresponds to or is different from the combinations of the processed reconstructed samples.Type: GrantFiled: March 23, 2023Date of Patent: February 18, 2025Assignee: TENCENT AMERICA LLCInventors: Yixin Du, Xin Zhao, Shan Liu
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Patent number: 12231671Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: obtaining image information; and generating a reconstructed picture on the basis of the image information.Type: GrantFiled: October 13, 2023Date of Patent: February 18, 2025Assignee: LG Electronics Inc.Inventors: Seethal Paluri, Seunghwan Kim, Jie Zhao
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Patent number: 12231640Abstract: A video decoding method includes: performing entropy decoding processing on an encoding block of a video image frame to obtain a quantized coefficient block of residual data corresponding to the encoding block; calculating quantization coefficients in the quantized coefficient block to obtain an implicitly derived index value; determining a transformation mode of the encoding block according to the implicitly derived index value and a value of an index identifier included in the encoding block; and performing inverse transformation processing on an inverse quantization result of the quantized coefficient block based on the transformation mode of the encoding block.Type: GrantFiled: September 30, 2022Date of Patent: February 18, 2025Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventor: Liqiang Wang
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Patent number: 12225238Abstract: Decoder for decoding a picture from a data stream, configured to check whether a plurality of coding parameters, which are contained in the data stream, relate to a predetermined portion of the picture and control a prediction residual transform mode and a quantization accuracy with respect to the predetermined portion, are indicative of a coding parameter setting corresponding to a lossless prediction residual coding. Responsive to the plurality of coding parameters being indicative of the coding parameter setting corresponding to the lossless prediction residual coding, the decoder is configured to set one or more predetermined coding options relating to one or more tools of the decoder for processing a prediction residual corrected predictive reconstruction with respect to the predetermined portion so that the one or more tools are disabled with respect to the predetermined portion.Type: GrantFiled: February 14, 2024Date of Patent: February 11, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Christian Helmrich, Benjamin Bross, Tung Hoang Nguyen, Heiko Schwarz, Detlev Marpe, Thomas Wiegand
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Patent number: 12225179Abstract: Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.Type: GrantFiled: November 7, 2023Date of Patent: February 11, 2025Assignee: B1 Institute of Image Technology, Inc.Inventor: Ki Baek Kim
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Patent number: 12225189Abstract: The present invention relates to an image encoding method and an image decoding method. The image decoding method includes partitioning a picture into a plurality of coding units, constructing a coding unit group including at least one coding unit of the plurality of coding units, obtaining coding information in units of one coding unit group, and decoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information.Type: GrantFiled: January 12, 2024Date of Patent: February 11, 2025Assignee: Electronics and Telecommunications Research InstituteInventors: Jung Won Kang, Sung Chang Lim, Hyun Suk Ko, Ha Hyun Lee, Jin Ho Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi
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Patent number: 12225216Abstract: According to the disclosure of the present document, chroma quantization parameter offset-related information can be signaled through palette syntax coding, and index information for a chroma quantization parameter offset list can be efficiently parsed/signaled on the basis of information about the number of entries in the chroma quantization parameter offset list. Accordingly, bits that are required to be signaled in order to code a video/image can be reduced, and the coding efficiency can be enhanced.Type: GrantFiled: May 13, 2024Date of Patent: February 11, 2025Assignee: LG ELECTRONICS INC.Inventors: Hendry Hendry, Seunghwan Kim, Jie Zhao
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Patent number: 12225125Abstract: A method for encoding/decoding a message with One Time Pad (OTP) process, includes receiving a message to be encoded and an ordered dataset. A PRNG is parameterized with an initial seed that is used in a harvesting operation, which selects data from the dataset to create a current entropy plane of the selected data. In an encoding operation a portion of the received message is selected. The current entropy plane is scanned and data from which data is selected. The location of the selected data from the entropy plane is determined and marked as used and then assembled in an encoded message. This operation is repeated until no unmarked data is present in the current entropy plane. A new entropy plane is generated, and the scanning operation repeated until all portions of the received message have been processed. The process is reversed for a decoding operation.Type: GrantFiled: August 8, 2024Date of Patent: February 11, 2025Assignee: Amera IoT Inc.Inventors: Robert B. Roessler, Jr., Christopher J. Daly, Anthony V. Valentino, Max Fleming
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Patent number: 12219172Abstract: A method of encoding a motion vector predictor index, in particular a Merge index, comprises generating a list of motion vector predictor candidates, in particular merge candidates. The list includes an ATMVP candidate. One of the motion vector predictor candidates in the list is selected. A motion vector predictor index for the selected motion vector predictor candidate is generated using CABAC coding. One or more bits of the motion vector predictor index are bypass CABAC coded. For example, only the first bit of the motion vector predictor index is CABAC coded using a single context.Type: GrantFiled: February 17, 2023Date of Patent: February 4, 2025Assignee: Canon Kabushiki KaishaInventors: Guillaume Laroche, Christophe Gisquet, Patrice Onno, Jonathan Taquet
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Patent number: 12219114Abstract: Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.Type: GrantFiled: November 7, 2023Date of Patent: February 4, 2025Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.Inventor: Ki Baek Kim
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Patent number: 12219263Abstract: A method for decoding a 360-degree image includes: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; combining the generated prediction image with a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Here, generating the prediction image includes: checking, from the syntax information, prediction mode accuracy for a current block to be decoded; determining whether the checked prediction mode accuracy corresponds to most probable mode (MPM) information obtained from the syntax information; and when the checked prediction mode accuracy does not correspond to the MPM information, reconfiguring the MPM information according to the prediction mode accuracy for the current block.Type: GrantFiled: May 15, 2024Date of Patent: February 4, 2025Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.Inventor: Ki Baek Kim
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Patent number: 12212754Abstract: The coding of a media signal is rendered more efficient by describing the media signal using a sequence of samples and sequentially encoding this sequence by selecting, for a current sample, a set of quantization levels out of a plurality of quantization level sets depending on indices encoded into the data stream for previous samples of the sequence of samples, quantizing the current sample onto one level of the set of quantization levels, and encoding a quantization index to the one level for the current sample into the data stream. In other words, scalar quantization of the individual samples of the sequence of samples is used, but it is rendered dependent on quantization indices encoded into the data stream for previous samples of the sequence of samples.Type: GrantFiled: November 15, 2022Date of Patent: January 28, 2025Assignee: Fraunhofer-Gesellschaft zur Förderung derangewandten Forschung e.V.Inventors: Heiko Schwarz, Thomas Wiegand, Phan Hoang Tung Nguyen, Detlev Marpe
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Patent number: 12212854Abstract: A method of decoding an image, includes obtaining at least one offset for a picture, deriving a variable for scaling for the picture based on the at least one offset, and performing inter prediction based on the variable for scaling for the picture. The at least one offset is defined with a direction of scaling.Type: GrantFiled: November 6, 2023Date of Patent: January 28, 2025Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.Inventor: Ki Baek Kim
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Patent number: 12212752Abstract: Inverse quantization is performed on a quantization coefficient using a quantization parameter depending on whether a transform skip is to be applied, inverse coefficient transformation is performed on a transform coefficient generated by inverse quantization to generate a predicted residual that is a residual between an image and a predicted image of the image when the transform skip is not to be applied, and the inverse coefficient transformation is skipped when the transform skip is to be applied. This can be applied to, for example, an image processing device, an image coding device, an image decoding device, a transmission device, a reception device, a transmission/reception device, an information processing device, an imaging device, a reproduction device, an electronic apparatus, an image processing method, an information processing method, or the like.Type: GrantFiled: September 4, 2020Date of Patent: January 28, 2025Assignee: SONY GROUP CORPORATIONInventor: Takeshi Tsukuba
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Patent number: 12206914Abstract: Methods, systems, and media for determining perceptual quality indicators of video content items are provided.Type: GrantFiled: June 8, 2022Date of Patent: January 21, 2025Assignee: Google LLCInventors: Yilin Wang, Balineedu Adsumilli, Junjie Ke, Hossein Talebi, Joong Yim, Neil Birkbeck, Peyman Milanfar, Feng Yang