Patents by Inventor Roman Igorevich CHERNYAK
Roman Igorevich CHERNYAK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11930183Abstract: A method of determining a distance table of a merge with motion vector difference (MMVD) mode, wherein the method comprises determining a reference picture from at least one reference picture list of a current processing unit based on at least one parameter of the reference picture, and obtaining the distance table for the current processing unit based on the reference picture, wherein the at least one parameter of the reference picture comprises a picture order count (POC) number of the reference picture, a number of MMVD blocks of the reference picture, a reference picture list index of the reference picture, a reference picture index of the reference picture, and a quantization parameter (QP) of the reference picture.Type: GrantFiled: July 9, 2021Date of Patent: March 12, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Alexander Alexandrovich Karabutov, Timofey Mikhailovich Solovyev, Roman Igorevich Chernyak, Sergey Yurievich Ikonin, Jianle Chen
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Patent number: 11924407Abstract: The present disclosure relates to video encoding and decoding, and in particular, a method for inter prediction for a block in a frame of a video signal includes: constructing a history-based motion information candidate list, wherein the list is an ordered list comprising N history-based motion information candidates Hk containing motion information of N preceding blocks preceding the block, wherein each history-based motion information candidate comprises: one or more motion vectors (MVs), one or more reference picture indices corresponding to the MVs, and an interpolation filter index; adding one or more history-based motion information candidates from the history-based motion information candidate list into a motion information candidate list for the block; and deriving motion information for the block based on the motion information candidate list.Type: GrantFiled: October 15, 2021Date of Patent: March 5, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Timofey Mikhailovich Solovyev, Sergey Yurievich Ikonin, Roman Igorevich Chernyak, Alexander Alexandrovich Karabutov, Elena Alexandrovna Alshina, Huanbang Chen
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Publication number: 20240040146Abstract: The present disclosure relates to video encoding and decoding, and in particular to determining motion information for a current block using a history-based motion vector predictor, HMVP, list. The HMVP list is constructed, with said list being an ordered list of N HMVP candidates Hk, k=0, . . . , N?1, which are associated with motion information of N preceding blocks of the frame and precede the current block. Each HMVP candidate has motion information including elements of one or more motion vectors, MVs, one or more reference picture indices corresponding to the MVs, and one or more bi-prediction weight indices. One or more HMVP candidates from the HMVP list are added into a motion information candidate list for the current block; and the motion information is derived based on the motion information candidate list.Type: ApplicationFiled: August 4, 2023Publication date: February 1, 2024Inventors: Timofey Mikhailovich SOLOVYEV, Roman Igorevich CHERNYAK, Alexander Alexandrovich KARABUTOV, Jianle CHEN, Sergey Yurievich IKONIN, Elena Alexandrovna ALSHINA
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Publication number: 20240015290Abstract: 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: ApplicationFiled: July 11, 2023Publication date: January 11, 2024Inventors: Anand Meher KOTRA, Elena Alexandrovna ALSHINA, Semih ESENLIK, Biao WANG, Han GAO, Roman Igorevich CHERNYAK
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Publication number: 20240015334Abstract: The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.Type: ApplicationFiled: September 22, 2023Publication date: January 11, 2024Inventors: Roman Igorevich CHERNYAK, Timofey Mikhailovich SOLOVYEV, Sergey Yurievich IKONIN, Alexander Alexandrovich KARABUTOV, Jianle CHEN
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Patent number: 11863748Abstract: A method of obtaining quantization parameter (QP) for chrominance components based on QP for luminance component, wherein the method is performed by a decoder or encoder, and wherein the method comprises obtaining a luminance QP for a luma component of a coding unit; obtaining a QP index (QPi) based at least in a part on the luminance QP; and obtaining a chrominance QP (QPc) for a chroma component of the coding unit based on the QP index by using a preset lookup table, wherein the maximum difference between the QP index and the chrominance QP is equal to 3.Type: GrantFiled: December 9, 2021Date of Patent: January 2, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Sergey Yurievich Ikonin, Roman Igorevich Chernyak, Timofey Mikhailovich Solovyev, Alexander Alexandrovich Karabutov, Elena Alexandrovna Alshina
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Patent number: 11838508Abstract: A method for inverse quantization of a current block of a picture is performed by a decoder, and the picture comprises a luminance component and a chrominance component, wherein the luminance component and the chrominance component are partitioned into multiple blocks. The method includes: obtaining one or more existing quantization parameter (QP) values from a received bitstream, wherein the one or more existing QP values relate to a current block in the chrominance component; determining a QP value for the current block in the chrominance component based on the one or more existing QP values; and performing inverse quantization on the current block in the chrominance component by using the determined QP value.Type: GrantFiled: May 25, 2021Date of Patent: December 5, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Roman Igorevich Chernyak, Jianle Chen, Alexander Alexandrovich Karabutov, Sergey Yurievich Ikonin
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Patent number: 11831871Abstract: Apparatuses and methods for Intra Sub-Partitions (ISP) are provided. The method includes: obtaining information of ISP, and determining a size of a chroma transform block (TB) of the coding unit based on SubWidthC and SubHeightC when at least a first condition is fulfilled. The first condition includes the information of ISP indicates that ISP is used for splitting the luma coding block. SubWidthC and SubHeightC are variables depending on chroma format information. The chroma format information indicates a chroma format of a picture the coding unit belongs to. The method can apply to all chroma format. The chroma format includes at least one of: 4:2:0, or 4:2:2, or 4:4:4. An accurate and versatile way to determine the size of the chroma transform block for the ISP is achieved.Type: GrantFiled: April 20, 2022Date of Patent: November 28, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Roman Igorevich Chernyak, Timofey Mikhailovich Solovyev, Yin Zhao, Sergey Yurievich Ikonin, Jianle Chen
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Publication number: 20230353760Abstract: A method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax and a coding unit syntax, the transform unit syntax includes a value of a first flag and a value of a second flag related to, respectively, a first chroma transform block and a second chroma transform block of a current transform unit or a current sub-transform unit within the current transform unit, the first or second flag specifies whether the first or second chroma transform block contains at least one transform coefficient levels not equal to 0, the coding unit syntax includes a value of a third flag specifying whether a transform tree structure is present or not; and deriving a value of a fourth flag based on the values of the first, second, and third flags, the fourth flag specifies whether a luma transform block contains at least one transform coefficient levels not equal to 0.Type: ApplicationFiled: June 7, 2023Publication date: November 2, 2023Inventors: Roman Igorevich CHERNYAK, Yin ZHAO, Sergey Yurievich IKONIN, Jianle CHEN
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Patent number: 11805249Abstract: A filter for video coding is provided, where the filter is configured for processing a block for generation of a filtered block, and the block comprises a plurality of pixels. The filter includes one or more processor configured to: obtain a quantization parameter (QP) of the block; obtain a threshold (THR) based on the QP; and obtain a look up table based on QP, so as to generate a filtered block based on the threshold and the look up table. The filter is provided allowing improving the efficiency for video coding.Type: GrantFiled: December 31, 2020Date of Patent: October 31, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Sergey Yurievich Ikonin, Victor Alexeevich Stepin, Dmitry Yurievich Kuryshev, Jianle Chen, Roman Igorevich Chernyak
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Patent number: 11800152Abstract: The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.Type: GrantFiled: June 9, 2022Date of Patent: October 24, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Roman Igorevich Chernyak, Timofey Mikhailovich Solovyev, Sergey Yurievich Ikonin, Alexander Alexandrovich Karabutov, Jianle Chen
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Patent number: 11765383Abstract: The present disclosure relates to video encoding and decoding, and in particular to determining motion information for a current block using a history-based motion vector predictor, HMVP, list. The HMVP list is constructed, with said list being an ordered list of N HMVP candidates Hk, k=0, . . . , N?1, which are associated with motion information of N preceding blocks of the frame and precede the current block. Each HMVP candidate has motion information including elements of one or more motion vectors, MVs, one or more reference picture indices corresponding to the MVs, and one or more bi-prediction weight indices. One or more HMVP candidates from the HMVP list are added into a motion information candidate list for the current block; and the motion information is derived based on the motion information candidate list.Type: GrantFiled: April 22, 2021Date of Patent: September 19, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Timofey Mikhailovich Solovyev, Roman Igorevich Chernyak, Alexander Alexandrovich Karabutov, Jianle Chen, Sergey Yurievich Ikonin, Elena Alexandrovna Alshina
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Publication number: 20230291902Abstract: A method for inverse quantization of a current block of a picture is provided. The method is performed by a decoder, and the picture comprises a luminance component and a chrominance component, where the luminance component and the chrominance component are partitioned into multiple blocks. The method includes obtaining one or more existing quantization parameter (QP) values from a received bitstream, wherein the one or more existing QP values are associated with a current block in the chrominance component; determining a QP value for the current block in the chrominance component based on the one or more existing QP values; performing inverse quantization on the current block in the chrominance component using the determined QP value.Type: ApplicationFiled: May 9, 2023Publication date: September 14, 2023Applicant: Huawei Technologies Co., Ltd.Inventors: Roman Igorevich CHERNYAK, Alexander Alexandrovich KARABUTOV, Sergey Yurievich IKONIN, Timofey Mikhailovich SOLOVYEV, Haitao YANG, Jianle CHEN, Yin ZHAO
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Patent number: 11750807Abstract: Apparatuses and methods for Intra Sub-Partitions (ISP) are provided. The method includes: obtaining information of ISP, and determining a size of a chroma transform block (TB) of the coding unit based on SubWidthC and SubHeightC when at least a first condition is fulfilled. The first condition includes the information of ISP indicates that ISP is used for splitting the luma coding block. SubWidthC and SubHeightC are variables depending on chroma format information. The chroma format information indicates a chroma format of a picture the coding unit belongs to. The method can apply to all chroma format. The chroma format includes at least one of: 4:2:0, or 4:2:2, or 4:4:4. An accurate and versatile way to determine the size of the chroma transform block for the ISP is achieved.Type: GrantFiled: August 11, 2021Date of Patent: September 5, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Roman Igorevich Chernyak, Timofey Mikhailovich Solovyev, Yin Zhao, Sergey Yurievich Ikonin, Jianle Chen
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Patent number: 11736695Abstract: 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: March 4, 2022Date of Patent: August 22, 2023Assignee: 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: 11716479Abstract: A method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax and a coding unit syntax, the transform unit syntax includes a value of a first flag and a value of a second flag related to, respectively, a first chroma transform block and a second chroma transform block of a current transform unit or a current sub-transform unit within the current transform unit, the first or second flag specifies whether the first or second chroma transform block contains at least one transform coefficient levels not equal to 0, the coding unit syntax includes a value of a third flag specifying whether a transform tree structure is present or not; and deriving a value of a fourth flag based on the values of the first, second, and third flags, the fourth flag specifies whether a luma transform block contains at least one transform coefficient levels not equal to 0.Type: GrantFiled: June 2, 2022Date of Patent: August 1, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Roman Igorevich Chernyak, Yin Zhao, Sergey Yurievich Ikonin, Jianle Chen
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Patent number: 11706412Abstract: A filter for video coding is configured for processing a block for generation of a filtered block, where the block comprises a plurality of pixels. The filter includes one or more processor configured to: scan a current pixel of the block and its neighboring pixels of the current pixel according to a predefined scan template, obtain spectrum components by performing transform for the current pixel and its neighboring pixels, obtain filtered spectrum components based on a filtering parameter and the spectrum components, obtain filtered pixels by performing inverse transform for the filtered spectrum components, and generate a filtered block based on the filtered pixels.Type: GrantFiled: December 31, 2020Date of Patent: July 18, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Victor Alexeevich Stepin, Sergey Yurievich Ikonin, Roman Igorevich Chernyak, Jianle Chen, Dmitry Yurievich Kuryshev
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Patent number: 11689723Abstract: A method for inverse quantization of a current block of a picture is provided. The method is performed by a decoder, and the picture comprises a luminance component and a chrominance component, where the luminance component and the chrominance component are partitioned into multiple blocks. The method includes obtaining one or more existing quantization parameter (QP) values from a received bitstream, wherein the one or more existing QP values are associated with a current block in the chrominance component; determining a QP value for the current block in the chrominance component based on the one or more existing QP values; performing inverse quantization on the current block in the chrominance component using the determined QP value.Type: GrantFiled: March 19, 2021Date of Patent: June 27, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Roman Igorevich Chernyak, Alexander Alexandrovich Karabutov, Sergey Yurievich Ikonin, Timofey Mikhailovich Solovyev, Haitao Yang, Jianle Chen, Yin Zhao
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Publication number: 20230199227Abstract: A method of coding is implemented by a decoding device, the method includes: receiving a bitstream, and obtaining from the bitstream, a first luma bit depth value of luma samples of a current picture. The method also includes performing a Hadamard Transform Domain Filtering (HTDF) post reconstruction filtering of a block of the current picture by using a lookup table based on the obtained first luma bit depth value.Type: ApplicationFiled: February 21, 2023Publication date: June 22, 2023Inventors: Roman Igorevich Chernyak, Kamilla Railevna DAVLETSHINA, Sergey Yurievich Ikonin, Elena Alexandrovna Alshina
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Publication number: 20230125381Abstract: A prediction method for an image block comprising a first prediction sub-block and a second prediction sub-block, the prediction method comprising: parsing a first index from a bitstream, wherein the first index is used to obtain prediction information of the first prediction sub-block; parsing a second index from the bitstream; comparing the first index with the second index; adjusting the second index in the event that the second index is equal to or greater than the first index; and obtaining prediction information of the second prediction sub-block according to the adjusted second index.Type: ApplicationFiled: December 24, 2022Publication date: April 27, 2023Inventors: Timofey Mikhailovich SOLOVYEV, Semih Esenlik, Jianle Chen, Anand Meher Kotra, Han Gao, Biao Wang, Roman Igorevich Chernyak, Alexander Alexandrovich Karabutov, Sergey Yurievich Ikonin