Patents by Inventor Kenneth Andersson

Kenneth Andersson 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).

  • Publication number: 20250142108
    Abstract: Methods and apparatuses for processing (e.g., decoding) a current block within a current picture. The processing may include decoding partial motion vector difference (MVD) information from a coded video bitstream. The processing may include determining first and second motion vector predictors (MVPs). The processing may include determining complete MVD information using the partial MVD information and one or more of the first and second MVPs. Determining the complete MVD information may include using the partial MVD information to generate a set of MVD hypothesis pairs, and each of the MVD hypothesis pairs may include a possible first MVD and a possible second MVD. The processing may include determining first and second final prediction blocks of the current block using the complete MVD information and the first and second MVPs.
    Type: Application
    Filed: December 22, 2022
    Publication date: May 1, 2025
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ruoyang YU, Kenneth ANDERSSON, Jacob STRÖM
  • Publication number: 20250142129
    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.
    Type: Application
    Filed: November 8, 2024
    Publication date: May 1, 2025
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Jack ENHORN, Zhi ZHANG
  • Patent number: 12278993
    Abstract: A method, decoder, and apparatus are provided. Responsive to a current block being a MIP predicted block, it is determined whether it has one or multiple transform blocks. A MIP weight matrix to be used to decode the current block is determined based on a MIP prediction mode. Responsive to the MIP predicted block having one transform block, the MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream. Responsive to the MIP predicted block having multiple transform blocks: deriving a first MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream and remaining MIP predicted blocks are derived based further on decoded elements in at least one decoded transform block of the current block. The MIP predicted block(s) are output for subsequent processing.
    Type: Grant
    Filed: March 8, 2024
    Date of Patent: April 15, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhi Zhang, Kenneth Andersson, Davood Saffar, Rickard Sjöberg, Jacob Ström, Ruoyang Yu
  • Publication number: 20250119590
    Abstract: A method for deriving a value for a first syntax element, Syntax_A. The method comprises determining whether Syntax_A is present in a bitstream. The method comprises, as a result of determining that Syntax_A is not present in the bitstream, deriving the value for Syntax_A to be equal to a first value, B, if a first condition is satisfied, or deriving the value for Syntax_A to be equal to a second value, C, if a second condition is satisfied.
    Type: Application
    Filed: October 25, 2024
    Publication date: April 10, 2025
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rickard SJÖBERG, Martin PETTERSSON, Mitra DAMGHANIAN, Jacob STRÖM, Zhi ZHANG, Kenneth ANDERSSON, Jack ENHORN
  • Patent number: 12250413
    Abstract: A deblocking the method. The method includes deblocking a block boundary between a first block (B1) and a second block (B2) with the restriction that not more than 5 samples are modified on the B2 side of the block boundary as a result of the deblocking. The deblocking method also includes deblocking a sub-block boundary within the B2 block such that not more than 2 samples on the side of the sub-block boundary within the B2 block that is closest to the block boundary between B1 and B2 are modified by the deblocking.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: March 11, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kenneth Andersson, Rickard Sjöberg, Zhi Zhang
  • Publication number: 20250071346
    Abstract: A first filter decision value is calculated for a block of pixels in a video frame based on pixel values of pixels in a first line of pixels in the block. A second filter decision value is also calculated for the block based on pixel values of pixels in a corresponding first line of pixels in a neighboring block in the video frame. The first filter decision value is used to determine how many pixels in a line of pixels in the block to filter relative to a block boundary between the block and the neighboring block. The second filter decision value is used to determine how many pixels in a corresponding line of pixels in the neighboring block to filter relative to the block boundary.
    Type: Application
    Filed: November 14, 2024
    Publication date: February 27, 2025
    Inventors: Andrey NORKIN, Kenneth ANDERSSON, Rickard SJÖBERG
  • Publication number: 20250071283
    Abstract: There is provided a method. The method comprises obtaining a weighting factor. The method comprises obtaining input sample values. The method further comprises determining neural network, NN, filtered sample values by providing the input sample values to a neural network. The method comprises determining revised sample values based on (i) the weighting factor and (ii) the NN filtered sample values.
    Type: Application
    Filed: December 14, 2022
    Publication date: February 27, 2025
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Jacob STRÖM, Du LIU
  • Publication number: 20250063163
    Abstract: Methods and apparatuses for applying a deblocking to a coding unit in video pictures a provided. In one aspect, the deblocking is applied to sub-block boundaries in the coding unit and to implicit transform unit boundaries in the coding unit.
    Type: Application
    Filed: August 28, 2024
    Publication date: February 20, 2025
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Rickard SJÖBERG, Jacob STRÖM, Zhi ZHANG
  • Publication number: 20250063174
    Abstract: A method for encoding or decoding an image. The method includes obtaining a CTB having a vertical size (CtbSizeY) and a horizontal size (CtbSizex), the CTB comprising set of sample values comprising a current sample value having a location (x,y) within the CTB. The method also includes selecting a filter strength value for the current sample based on y and filtering the current sample using the selected filter strength value. Selecting a filter strength value for the current sample based on y comprises: i) determining whether the following first condition is true: (y==(CtbSizeY-5) OR y==(CtbSizeY-4)) AND var==1, where var is set equal to 1 as a result of a determination that a second condition is satisfied; and ii) choosing a filter strength value of 10 as a result of determining the first condition is true.
    Type: Application
    Filed: August 29, 2024
    Publication date: February 20, 2025
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Jacob STRÖM, Zhi ZHANG, Jack ENHORN
  • Patent number: 12200206
    Abstract: There is provided a method for encoding or decoding an image. The method comprises obtaining a first luma sample value, L1, associated with the image. The method comprises obtaining a second luma sample value, L2, associated with the image. The method further comprises obtaining a first luma delta value, ?L1, wherein ?L1=L2?L1. The method comprises obtaining a first product, P1, using ?L1 and a first coefficient value, C1, wherein P1=(C1)(?L1). The method comprises calculating a first residual correction value, ?I1 using P1 and a set of other products. The method comprises filtering an unfiltered chroma value, RC, associated with the image using the first residual correction value, ?I1, thereby producing a filtered chroma value RFC associated with the image.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: January 14, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jacob Ström, Zhi Zhang, Kenneth Andersson
  • Publication number: 20240430416
    Abstract: In one aspect there is disclosed a method of applying deblocking on implicit vertical TU boundaries when the CU width is larger than the maximum TU width and applying deblocking on implicit horizontal TU boundaries when the CU height is larger than the maximum TU height. Some exemplary embodiments include HEVC deblocking and deblocking using longer filters.
    Type: Application
    Filed: June 26, 2024
    Publication date: December 26, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Rickard SJÖBERG, Jacob STRÖM, Zhi ZHANG
  • Patent number: 12177494
    Abstract: A first filter decision value is calculated for a block of pixels in a video frame based on pixel values of pixels in a first line of pixels in the block. A second filter decision value is also calculated for the block based on pixel values of pixels in a corresponding first line of pixels in a neighboring block in the video frame. The first filter decision value is used to determine how many pixels in a line of pixels in the block to filter relative to a block boundary between the block and the neighboring block. The second filter decision value is used to determine how many pixels in a corresponding line of pixels in the neighboring block to filter relative to the block boundary.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: December 24, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Andrey Norkin, Kenneth Andersson, Rickard Sjöberg
  • Publication number: 20240414379
    Abstract: There is provided a method. The method comprises obtaining an input video frame data associated with an input video frame. The method comprises performing a deblocking filtering operation on one or more samples included in the input video frame, thereby generating one or more deblocked samples. The method further comprises performing a machine-learning (ML)-based filtering operation and/or adaptive loop filtering operation on one or more samples included in the input video frame, thereby generating one or more filtered samples. The method comprises, using said one or more deblocked samples and/or said one or more filtered samples, producing encoded or decoded video frame data including an encoded or decoded video frame.
    Type: Application
    Filed: August 24, 2022
    Publication date: December 12, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Jacob STRÖM, Du LIU
  • Patent number: 12167041
    Abstract: A method for deriving a value for a first syntax element, Syntax_A. The method comprises determining whether Syntax_A is present in a bitstream. The method comprises, as a result of determining that Syntax_A is not present in the bitstream, deriving the value for Syntax_A to be equal to a first value, B, if a first condition is satisfied, or deriving the value for Syntax_A to be equal to a second value, C, if a second condition is satisfied.
    Type: Grant
    Filed: April 19, 2023
    Date of Patent: December 10, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rickard Sjöberg, Martin Pettersson, Mitra Damghanian, Jacob Ström, Zhi Zhang, Kenneth Andersson, Jack Enhorn
  • Patent number: 12167043
    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.
    Type: Grant
    Filed: September 19, 2023
    Date of Patent: December 10, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kenneth Andersson, Jack Enhorn, Zhi Zhang
  • Publication number: 20240364875
    Abstract: The long filter decision in VVC is modified by adding at least one gradient check that at least includes sample p6 or q6. This makes it possible to avoid using the long filters when there is some natural structure at sample p6 or q6. In one specific embodiment at least two gradient checks including both q6 and p6 are added. In another embodiment, the dpq threshold is modified from beta>>2 to beta>>4. This threshold change embodiment may be used in conjunction with or instead of the embodiment in which a gradient check that includes p6 and/or q6 is added to the long filter decision.
    Type: Application
    Filed: April 17, 2024
    Publication date: October 31, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Jack ENHORN
  • Publication number: 20240364938
    Abstract: An asymmetric deblocking method for deblocking a boundary between a P block and a Q block such that 5 samples within the P block and 7 or 3 samples within the Q block are modified. The method includes determining a value refP based on at least p5, determining a value refQ based on at least qx, wherein qx is q3 or q7; determining a value refMiddle based on at least p0 and q0, wherein p0 is directly adjacent to the boundary and q0 is directly adjacent to the boundary; performing a linear interpolation between refP and refMiddle; and performing a linear interpolation between refQ and refMiddle.
    Type: Application
    Filed: May 13, 2024
    Publication date: October 31, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Jack ENHORN, Zhi ZHANG
  • Publication number: 20240340446
    Abstract: Methods and devices for determining video picture resolution. A first source picture is obtained and a first reduced resolution picture is generated based on the first source picture. A first similarity metric is determined for the first reduced resolution picture and the first source picture. A picture resolution is selected based at least in part on the first similarity metric.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 10, 2024
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kenneth ANDERSSON, Jacob STRÖM, Ruoyang YU
  • Publication number: 20240340454
    Abstract: A method, decoder, and apparatus are provided. Responsive to a current block being a MIP predicted block, it is determined whether it has one or multiple transform blocks. A MIP weight matrix to be used to decode the current block is determined based on a MIP prediction mode. Responsive to the MIP predicted block having one transform block, the MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream. Responsive to the MIP predicted block having multiple transform blocks: deriving a first MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream and remaining MIP predicted blocks are derived based further on decoded elements in at least one decoded transform block of the current block. The MIP predicted block(s) are output for subsequent processing.
    Type: Application
    Filed: March 8, 2024
    Publication date: October 10, 2024
    Inventors: Zhi ZHANG, Kenneth ANDERSSON, Davood SAFFAR, Rickard SJÖBERG, Jacob STRÖM, Ruoyang YU
  • Patent number: 12113970
    Abstract: A deblocking method for deblocking a boundary between a first block of samples, block P, and a second block of samples, block Q. The method includes determining whether at least one of the P block or the Q block is a combined intra-inter prediction block; and, as a result of determining that at least one of the P block or the Q block is a combined intra-inter prediction block, deblocking the boundary between the P block and the Q block.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: October 8, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kenneth Andersson, Jack Enhorn, Ruoyang Yu, Zhi Zhang