Patents Examined by Zhihan Zhou
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Patent number: 11870989Abstract: An example method of video processing includes determining, for a conversion between a block of a first sub-picture of a video and a bitstream representation of the video, whether to apply a deblocking process across an edge between the block and a neighboring block of a second sub-picture based on whether a loop filtering process is allowed across subpicture boundaries. The method also includes performing the conversion based on the determining.Type: GrantFiled: April 18, 2022Date of Patent: January 9, 2024Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.Inventors: Kai Zhang, Zhipin Deng, Hongbin Liu, Li Zhang, Jizheng Xu
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Patent number: 11870995Abstract: The video signal processing method comprises the steps of: downsampling luma components of reconstructed blocks adjacent to a current block; acquiring a maximum luma value from among the downsampled luma components based on a first index; acquiring a next-highest maximum luma value from among the downsampled luma components based on a second index; acquiring a maximum average luma value based on an average value of the maximum luma value and the next-highest maximum luma value; acquiring a next-lowest minimum luma value from among the downsampled luma components based on a third index; acquiring a minimum luma value from among the downsampled luma components based on a fourth index; and acquiring a minimum average luma value based on the next-lowest minimum luma value and the minimum luma value.Type: GrantFiled: July 21, 2022Date of Patent: January 9, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dongcheol Kim, Geonjung Ko, Jaehong Jung, Juhyung Son, Jinsam Kwak
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Patent number: 11870985Abstract: According to one embodiment of the present document, a cross component adaptive loop filtering (CCALF) process may be performed. The CCALF process can enhance the filtering performance for chroma components and improve the subjective/objective image quality of a picture.Type: GrantFiled: October 3, 2022Date of Patent: January 9, 2024Assignee: LG Electronics Inc.Inventors: Junghak Nam, Jangwon Choi
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Patent number: 11863790Abstract: A method of decoding may be performed by at least one processor, and may comprise: receiving an entropy coded bitstream comprising compressed video data; generating one or more dequantized blocks, determining whether at least one of a height and a width of the one or more dequantized blocks is greater than or equal to a predefined threshold, and responsive to the at least one of the height or the width of the one or more dequantized blocks being greater than or equal to the predefined threshold, transform coding a dequantized block using a tuned line graph transform (LGT) core to perform direct matrix multiplications for each of the horizontal and vertical dimensions of the one or more dequantized blocks.Type: GrantFiled: January 10, 2022Date of Patent: January 2, 2024Assignee: TENCENT AMERICA LLCInventors: Madhu Peringassery Krishnan, Xin Zhao, Shan Liu
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Patent number: 11849154Abstract: 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.Type: GrantFiled: June 23, 2021Date of Patent: December 19, 2023Assignee: Texas Instruments IncorporatedInventors: Woo-Shik Kim, Do-Kyoung Kwon, Minhua Zhou
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Patent number: 11849117Abstract: The present disclosure provides a video data processing method for cross-component sample adaptive offset (CCSAO). The method includes determining an index based on a vertical coordinate of a chroma sample within a picture; determining a luma sample based on the index; classifying the chroma sample based on a reconstructed value associated with the luma sample; determining an offset based on the classification; and adding the offset to a reconstructed value associated with the chroma sample.Type: GrantFiled: February 16, 2022Date of Patent: December 19, 2023Assignee: Alibaba (China) Co., Ltd.Inventors: Xinwei Li, Jie Chen, Ru-Ling Liao, Yan Ye
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Patent number: 11849126Abstract: A method for video processing is provided to include: performing a conversion between a current video block of a video and a coded representation of current video block, wherein the conversion uses a coding mode in which the current video block is constructed based on a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner, and wherein information used for the coding mode is signaled in a parameter set that is different from a sequence parameter set (SPS), a video parameter set (VPS), a picture parameter set (PPS), or an adaptation parameter set (APS) used for carrying adaptive loop filtering (ALF) parameters.Type: GrantFiled: April 6, 2022Date of Patent: December 19, 2023Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Jizheng Xu, Yue Wang
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Patent number: 11843770Abstract: A method and a computing device are provided for video coding. The method may include deriving parameter ? and parameter ? for a CCLM mode by using a predetermined number of neighboring reconstructed luma samples and chroma samples in a CU; and generating a final chroma predictor for the chroma samples of the CU by using the parameter ? and the parameter ?.Type: GrantFiled: April 28, 2022Date of Patent: December 12, 2023Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.Inventors: Yi-Wen Chen, Xianglin Wang, Xiaoyu Xiu
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Patent number: 11825101Abstract: An example device for decoding video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: apply a downsampling convolutional neural network layer to a first color component of a block of video data, the first color component of the block having a first size, wherein applying the downsampling convolutional neural network layer to the first color component generates a downsampled first color component having a second size smaller than the first size; filter a second color component having the second size to form a filtered second color component; concatenate the downsampled first color component with the filtered second color component to form concatenated color components; and filter the concatenated color components to form a filtered concatenated component including a filtered downsampled first color component.Type: GrantFiled: October 4, 2021Date of Patent: November 21, 2023Assignee: QUALCOMM IncorporatedInventors: Jianle Chen, Hongtao Wang, Venkata Meher Satchit Anand Kotra, Marta Karczewicz
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Patent number: 11825093Abstract: Techniques for context-adaptive binary arithmetic coding (CABAC) coding with a reduced number of context coded and/or bypass coded bins are provided. Rather than using only truncated unary binarization for the syntax element representing the delta quantization parameter and context coding all of the resulting bins as in the prior art, a different binarization is used and only part of the resulting bins are context coded, thus reducing the worst case number of context coded bins for this syntax element. Further, binarization techniques for the syntax element representing the remaining actual value of a transform coefficient are provided that restrict the maximum codeword length of this syntax element to 32 bits or less, thus reducing the number of bypass coded bins for this syntax element over the prior art.Type: GrantFiled: May 25, 2022Date of Patent: November 21, 2023Assignee: Texas Instruments IncorporatedInventors: Vivienne Sze, Madhukar Budagavi
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Patent number: 11825083Abstract: An example method of video processing includes determining, for a conversion between a block of a first sub-picture of a video and a bitstream representation of the video, whether to apply a deblocking process across an edge between the block and a neighboring block of a second sub-picture based on whether a loop filtering process is allowed across subpicture boundaries. The method also includes performing the conversion based on the determining.Type: GrantFiled: April 18, 2022Date of Patent: November 21, 2023Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.Inventors: Kai Zhang, Zhipin Deng, Hongbin Liu, Li Zhang, Jizheng Xu
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Patent number: 11818341Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method according to the present disclosure may comprise obtaining a reconstructed picture, determining a target boundary of deblocking filtering in the reconstructed picture, determining a boundary strength for the target boundary, and applying deblocking filtering to the target boundary based on the boundary strength. Based on the target boundary being a transform block boundary and a color component of the reconstructed picture being a chroma component, the boundary strength may be determined based on whether joint CbCr residual coding is performed on at least one of two blocks adjacent to the target boundary, and the joint CbCr residual coding may correspond to encoding residual samples for a chroma Cb component and a chroma Cr component as a single transform block.Type: GrantFiled: March 17, 2021Date of Patent: November 14, 2023Assignee: LG Electronics Inc.Inventors: Hyeong Moon Jang, Sangheon Lee
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Patent number: 11818400Abstract: A backward reshaping mapping table is initially generated as an inverse of a forward reshaping mapping table. The backward reshaping mapping table is updated by replacing the content-mapped luminance codewords with forward reshaped luminance codewords generated by applying a luminance forward mapping to the sampled luminance codewords. The luminance forward mapping is constructed from the forward reshaping mapping table. The backward reshaping mapping table and the luminance forward mapping are used to generate backward reshaping mappings for creating a reconstructed image from a forward reshaped image. The forward reshaped image is encoded, in a video signal, along with image metadata specifying the backward reshaping mappings. A recipient device of the video signal applies the backward reshaping mappings to the forward reshaped image to create the reconstructed image of the second dynamic range.Type: GrantFiled: October 16, 2020Date of Patent: November 14, 2023Assignee: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Qing Song, Arun Raj, Guan-Ming Su
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Patent number: 11812040Abstract: A method for video processing is provided to include: performing a conversion between a current video block of a video and a coded representation of current video block, wherein the conversion uses a coding mode in which the current video block is constructed based on a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner, and wherein information used for the coding mode is signaled in a parameter set that is different from a sequence parameter set (SPS), a video parameter set (VPS), a picture parameter set (PPS), or an adaptation parameter set (APS) used for carrying adaptive loop filtering (ALF) parameters.Type: GrantFiled: April 6, 2022Date of Patent: November 7, 2023Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Jizheng Xu, Yue Wang
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Patent number: 11810347Abstract: A system and method for capturing and processing aerial images of structures to assess structural damage is disclosed. The system comprises an aerial system associated with an aerial vehicle, which is in contact with a ground system. The aerial system is used to capture images of selected locations associated with known structures and crop those images around the selected locations. The cropped images are then fed into a damage classifier that automatically classifies the degree of damage done to structures at the selected locations. The system and method may be deployed to quickly assess damage of structures in a disaster area.Type: GrantFiled: November 5, 2021Date of Patent: November 7, 2023Assignee: United Services Automobile Association (USAA)Inventors: Eric David Schroeder, Manfred Amann, Jess W. Gingrich, Donnette Moncrief Brown, Robert Wiseman Simpson, Daniel Diaz, Abbey Erin May, Jay Wesley Mullen, David Edward Garrison, Michael James Leach, Karen Marie Shackelford-George
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Patent number: 11812065Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. For example, the processing circuitry generates first reconstructed samples of a block, and applies a filter to multiple color components of the first reconstructed samples of the block to determine offsets to be applied to one or more color components. Then, the processing circuitry generates second reconstructed samples of the block based on the offsets for the one or more color components and the first reconstructed samples of the block.Type: GrantFiled: March 7, 2022Date of Patent: November 7, 2023Assignee: Tencent America LLCInventors: Yixin Du, Xin Zhao, Shan Liu
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Patent number: 11812044Abstract: A decoder includes circuitry configured to receive a bitstream, extract a header including a list of reference frames available for motion compensation, such as global motion compensation, determine, using the header, a motion model for a current block, the motion relative to a reference frame contained in the list of reference frames, and decode the current block using the motion model. Related apparatus, systems, techniques and articles are also described.Type: GrantFiled: February 25, 2022Date of Patent: November 7, 2023Assignee: OP Solutions, LLCInventors: Borivoje Furht, Hari Kalva, Velibor Adzic
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Patent number: 11805268Abstract: A method for video bitstream processing includes generating, using a first video block derived from a third video block of a first component and having a first size, a prediction block for a second video block of a video related to a second component, where the first component is different from the second component, and where the second video block has a second size that is different from the first size. The method also includes performing, using the prediction block, a conversion between the second video block and a bitstream representation of the video according to a two-step cross-component prediction mode (TSCPM).Type: GrantFiled: June 21, 2021Date of Patent: October 31, 2023Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Jizheng Xu, Yue Wang
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Patent number: 11805244Abstract: A picture decoding method, performed by a decoding apparatus according to the present disclosure, comprises the steps of: when an intra-prediction mode of a chroma block is a cross-component linear model (CCLM) mode, deriving neighboring chroma reference samples with respect to the chroma block; deriving neighboring luma reference samples of a luma block corresponding to the chroma block and luma samples in the luma block; deriving down-sampled neighboring luma reference samples and downsampled luma samples by down sampling the neighboring luma reference samples and the luma samples, respectively; deriving a linear model parameter on the basis of the down-sampled neighboring luma reference samples and the neighboring chroma reference samples; generating prediction samples with respect to the chroma block on the basis of the linear model parameter and the down-sampled luma samples of the luma block; and reconstructing the chroma block on the basis of the prediction samples with respect to the chroma block.Type: GrantFiled: June 7, 2022Date of Patent: October 31, 2023Assignee: LG ELECTRONICS INC.Inventors: Jangwon Choi, Jin Heo, Sunmi Yoo, Ling Li
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Patent number: 11800125Abstract: A method includes receiving a reference frame, determining, for a current block, a scaling constant; scaling a block of the reference frame according to the scaling constant, the block of the reference frame corresponding to the current block, and reconstructing pixel data of the current block and using the scaled block of the reference frame. Related apparatus, systems, techniques and articles are also described.Type: GrantFiled: August 5, 2021Date of Patent: October 24, 2023Assignee: OP Solutions, LLCInventors: Borivoje Furht, Hari Kalva, Velibor Adzic