Patents Assigned to DIGITALINSIGHTS INC.
  • Patent number: 11895289
    Abstract: Disclosed herein are an image decoding method, an image decoding apparatus, an image encoding method, an image encoding apparatus and a computer-readable recording medium. An image decoding method according to the present invention may include: decoding information on a prediction method of a current block; based on the information on the prediction method, determining a prediction method of the current block; and generating a prediction block of the current block by performing prediction for the current block based on the determined prediction method. Herein, the information on the prediction method of the current block may include at least one of information on subblock merge, information on MMVD, information on multi hypothesis prediction, and information on partition prediction.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: February 6, 2024
    Assignee: DIGITALINSIGHTS INC.
    Inventor: Yong Jo Ahn
  • Publication number: 20240031612
    Abstract: A method and an apparatus for video coding using pre-processing and post-processing are disclosed. The video coding method and the apparatus may model a noise model or a subjective video quality model for a current video, may pre-process and post-process a video on the basis of the model, and may signal information of the model.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20240031564
    Abstract: A method and an apparatus for video coding using adaptive intra prediction precision are disclosed. The video coding method and the apparatus select a precision mode for directionality of an intra prediction mode of a current block according to directional prediction modes of restored neighboring blocks. The video coding method and the apparatus adaptively use precision of the directionality based on the selected precision mode in intra prediction of a current block.
    Type: Application
    Filed: October 2, 2023
    Publication date: January 25, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20240022766
    Abstract: A dynamic mesh encoding/decoding method and the apparatus use motion information present between a plurality of frames constituting a dynamic mesh in order to improve coding efficiency by removing temporal redundancy of the dynamic mesh.
    Type: Application
    Filed: September 28, 2023
    Publication date: January 18, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230421752
    Abstract: A method and an apparatus for video coding using a matrix-based cross-component prediction are disclosed. The video coding method and apparatus predict a chroma component of a current block, by using a deep learning-based matrix operation, from a chroma component spatially adjacent to a chroma block of the current block and from a luma component spatially adjacent to a luma block corresponding to the chroma block.
    Type: Application
    Filed: September 1, 2023
    Publication date: December 28, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230410374
    Abstract: A mesh compression method and an apparatus utilize point cloud compression. The mesh compression method and apparatus transform the three-dimensional mesh into a point cloud and then compress/reconstruct the three-dimensional mesh using a point cloud compression method to improve the coding efficiency of a three-dimensional mesh.
    Type: Application
    Filed: September 5, 2023
    Publication date: December 21, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230412802
    Abstract: A video coding method and an apparatus using arbitrary block partitioning are disclosed. The video coding method and apparatus perform a transform and an inverse transform on residual signals of arbitrary partitioned blocks when predicting a current block by using arbitrary block. Alternatively, the video coding method and the video coding apparatus perform a transform and an inverse transform on residual signals corresponding to some pixels adjacent to a partitioning boundary after an arbitrary partitioning of the current block.
    Type: Application
    Filed: August 31, 2023
    Publication date: December 21, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230412811
    Abstract: A video coding method and an apparatus using a spiral scan order are disclosed. The video coding method and the apparatus perform encode/decode target blocks in a spiral scan order for allowing the blocks located centrally of a video frame to make use of more previously reconstructed neighboring blocks.
    Type: Application
    Filed: September 1, 2023
    Publication date: December 21, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Patent number: 11838509
    Abstract: The present invention relates to a method and apparatus for performing encoding and decoding using a variably-sized quantization coefficient group, in quantization coefficient group encoding and decoding of video compression technology.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: December 5, 2023
    Assignees: DIGITALINSIGHTS INC., KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Yongjo Ahn, Donggyu Sim, Hochan Ryu, Seanae Park, Woong Lim
  • Patent number: 11831890
    Abstract: An image encoding/decoding method of the present invention constructs a merge candidate list of a current block, derives motion information of the current block on the basis of the merge candidate list and a merge candidate index, and performs inter prediction on the current block on the basis of the derived motion information, wherein the merge candidate list can improve encoding/decoding efficiency by adaptively determining a plurality of merge candidates on the basis of the position or size of a merge estimation region (MER) to which the current block belongs.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: November 28, 2023
    Assignee: DIGITALINSIGHTS INC.
    Inventor: Yong Jo Ahn
  • Patent number: 11831870
    Abstract: The invention relates to a method for encoding/decoding an image. The image decoding method according to the invention comprises the steps of: obtaining diagonal partition information on a current block; determining a diagonal partition structure of the current block using the diagonal partition information; and diagonally partitioning the current block into a first and a second area based on the determined diagonal partition structure, the current block being a leaf node of a square or rectangular partition.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: November 28, 2023
    Assignee: DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Ho Chan Ryu
  • Patent number: 11818378
    Abstract: An image encoding/decoding method of the present invention constructs a merge candidate list of a current block, derives motion information of the current block on the basis of the merge candidate list and a merge candidate index, and performs inter prediction on the current block on the basis of the derived motion information, wherein the merge candidate list can improve encoding/decoding efficiency by adaptively determining a plurality of merge candidates on the basis of the position or size of a merge estimation region (MER) to which the current block belongs.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: November 14, 2023
    Assignee: DIGITALINSIGHTS INC.
    Inventor: Yong Jo Ahn
  • Publication number: 20230306650
    Abstract: A point cloud coding device and a method using a dead zone quantization scheme adaptively, when encoding attribute values of points in a point cloud, are disclosed. The point cloud coding device and method adjust the size of dead zones based on the impact of various characteristics of the points on the prediction performance with the attribute values.
    Type: Application
    Filed: June 1, 2023
    Publication date: September 28, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230308662
    Abstract: A video coding method and an apparatus using block merging are presented. The video coding method and apparatus adaptively generate a block merge list, to predict and transform a current block, by referencing encoding information of the current block and by referencing encoding information of spatially and temporally adjacent blocks.
    Type: Application
    Filed: June 1, 2023
    Publication date: September 28, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230300382
    Abstract: The present disclosure relates to a point cloud coding device and a method using a mapping function. The point cloud coding device and method compress attribute values of a point cloud by generating a piecewise linear function that is a nonlinear mapping function based on a distribution of the attribute values. The point cloud coding device and method map the attribute values to values within a limited range by utilizing the nonlinear mapping function.
    Type: Application
    Filed: May 26, 2023
    Publication date: September 21, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230300325
    Abstract: The present disclosure is related to a video encoding/decoding method and an apparatus using an intra prediction. The video encoding/decoding method and apparatus generate a predictor by performing a direction-based prediction and generate a predictor by performing a rule-based (or matrix operation-based) prediction. The video encoding/decoding method and apparatus combine the two predictors to generate a final intra predictor of the current block.
    Type: Application
    Filed: May 25, 2023
    Publication date: September 21, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park
  • Publication number: 20230199169
    Abstract: The present disclosure intends to provide a video encoding/decoding method of performing intra prediction for a current block by using luma reference samples derived based on a luma mapping function in order to enhance performance of intra prediction for a case where restored samples around the current block to be predicted cannot be used.
    Type: Application
    Filed: June 11, 2021
    Publication date: June 22, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DIGITALINSIGHTS INC.
    Inventors: Yong Jo Ahn, Jong Seok Lee, Seung Wook Park, Wha Pyeong Lim
  • Patent number: 11582480
    Abstract: In a method and a device for encoding or decoding an image according to the present invention, motion information for bidirectional prediction of a current block may be derived on the basis of an inter mode previously defined in the device for encoding or decoding an image, and inter prediction may be performed on the current block on the basis of the motion information, wherein the motion information for bidirectional prediction is adjusted to be motion information for unidirectional prediction according to the predefined inter mode.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: February 14, 2023
    Assignee: DIGITALINSIGHTS INC.
    Inventor: Yong Jo Ahn
  • Patent number: 11575898
    Abstract: A video decoding/decoding method and apparatus according to the present disclosure may obtain a transform coefficient of a current block, obtain an inverse-quantized transform coefficient by performing inverse-quantization on a transform coefficient based on a quantization-related parameter of an adaptation parameter set, and reconstruct a residual block of a current block based on an inverse-quantized transform coefficient.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: February 7, 2023
    Assignee: DIGITALINSIGHTS INC.
    Inventor: Yong Jo Ahn
  • Patent number: 11490077
    Abstract: An image encoding/decoding apparatus according to the present invention can configure a merge candidate list of a current block to which a diagonal motion partition is applied, derive the motion information of the current block on the basis of the merge candidate list and a merge candidate index, and perform inter-prediction on the current block on the basis of the derived motion information.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: November 1, 2022
    Assignee: DIGITALINSIGHTS INC.
    Inventor: Yong Jo Ahn