公开(公告)号：US20150036743A1

公开(公告)日：2015-02-05

申请号：US14374488

申请日：2013-02-01

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ha Hyun Lee ,  Jung Won Kang ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/593 ,  H04N19/33

CPC classification number: H04N19/30 ,  H04N19/33 ,  H04N19/463 ,  H04N19/593

Abstract: The present invention relates to a multilayer structure-based image coding and decoding method. The present invention provides a method of using an intra prediction mode of a corresponding block of a lower layer in intra-frame predictive coding of a target block of an upper layer to increase coding efficiency and decrease complexity by removing redundancy from inter-layer intra prediction mode information.

Abstract translation: 本发明涉及一种基于多层结构的图像编码和解码方法。 本发明提供一种在上层的目标块的帧内预测编码中使用下层的相应块的帧内预测模式的方法，以通过从层间帧内预测中去除冗余来提高编码效率和降低复杂度 模式信息。

公开(公告)号：US20140310010A1

公开(公告)日：2014-10-16

申请号：US14358104

申请日：2012-11-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jeong ll Seo ,  Seung Kwon Beack ,  Kyeong Ok Kang ,  Tae Jin Lee ,  Yong Ju Lee ,  Jae Hyoun Yoo ,  Keun Woo Choi ,  Jin Woong Kim

IPC: G10L19/008

CPC classification number: G10L19/008 ,  G10L19/24

Abstract: An encoding apparatus and a decoding apparatus supporting a scalable multichannel audio signal, and methods performed by the apparatuses art provided. When compressing and decompressing a multichannel audio signal to compress and reproduce high quality 3-dimensional (3D) audio, the apparatuses and the methods in integrated form of (1) a sound quality scalability function for providing various qualities of audio adaptively to a transmission environment, terminal performance, and a listening environment (2) a channel scalability function for providing multichannel signals of various formats adaptively to the transmission environment, the terminal performance, and a reproduction environment of a terminal, such as speaker arrangement, and (3) an object scalability function for independently controlling a particular audio object to maximize a 3D sound field effect.

Abstract translation: 支持可扩展多声道音频信号的编码装置和解码装置，以及由所提供的装置技术执行的方法。 当压缩和解压缩多声道音频信号以压缩和再现高质量的三维（3D）音频时，所述装置和方法以（1）声音质量可扩展性功能的综合形式，用于自适应地向传输环境提供音频质量 ，终端性能和收听环境（2）用于自适应地提供诸如扬声器布置的终端的传输环境，终端性能和再现环境的各种格式的多信道信号的信道可扩展性功能，以及（3） 用于独立地控制特定音频对象以最大化3D声场效应的对象可伸缩性功能。

公开(公告)号：US12244855B2

公开(公告)日：2025-03-04

申请号：US18330440

申请日：2023-06-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho Lee ,  Hui Yong Kim ,  Sung Chang Lim ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/117 ,  H04N19/122 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/182 ,  H04N19/44 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82 ,  H04N19/176 ,  H04N19/96

Abstract: According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved.

公开(公告)号：US12212741B2

公开(公告)日：2025-01-28

申请号：US18498663

申请日：2023-10-31

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Hui Yong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim ,  Sang Min Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/105 ,  H04N19/103 ,  H04N19/136 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/503 ,  H04N19/513 ,  H04N19/52 ,  H04N19/124 ,  H04N19/172

Abstract: The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.

公开(公告)号：US12166975B2

公开(公告)日：2024-12-10

申请号：US18345301

申请日：2023-06-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho Lee ,  Hui Yong Kim ,  Sung Chang Lim ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/11 ,  H04N19/107 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/91

Abstract: An image decoding method, according to the present invention, includes the steps of: deriving an MPM candidate mode from neighboring blocks adjacent to a target block to be decoded; generating an MPM list using the MPM candidate mode derived from the neighboring blocks; and deriving an intra prediction mode for the target block to be decoded using the generated MPM list. According to the present invention, image compression efficiency can be improved.

公开(公告)号：US12063385B2

公开(公告)日：2024-08-13

申请号：US18347483

申请日：2023-07-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang Lim ,  Hui Yong Kim ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jong Ho Kim ,  Ha Hyun Lee ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Chie Teuk Ahn

IPC: H04N19/52

CPC classification number: H04N19/52

Abstract: An inter prediction method according to the present invention comprises: a step for deriving reference motion information related to a unit to be decoded in a current picture; and a step for performing motion compensation for the unit to be decoded, using the reference motion information that has been derived. According to the present invention, image encoding/decoding efficiency can be enhanced.

公开(公告)号：US20240205428A1

公开(公告)日：2024-06-20

申请号：US18588746

申请日：2024-02-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/187 ,  H04N19/124 ,  H04N19/13 ,  H04N19/169 ,  H04N19/182 ,  H04N19/30 ,  H04N19/31 ,  H04N19/33 ,  H04N19/46 ,  H04N19/503 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91

CPC classification number: H04N19/187 ,  H04N19/124 ,  H04N19/13 ,  H04N19/182 ,  H04N19/188 ,  H04N19/30 ,  H04N19/31 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91 ,  H04N19/33 ,  H04N19/503

Abstract: The present invention relates to a decoding method for a bit stream that supports a plurality of layers. The decoding method may include receiving information on a set of video parameters that includes information on the plurality of layers, and parsing the set of video parameters to 5 grasp information on the layers in the bit stream.

公开(公告)号：US11997263B2

公开(公告)日：2024-05-28

申请号：US18191297

申请日：2023-03-28

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Hui Yong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/12 ,  H04N19/11 ,  H04N19/129 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/61 ,  H04N19/96

CPC classification number: H04N19/11 ,  H04N19/12 ,  H04N19/129 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/61 ,  H04N19/96

Abstract: An encoding method obtains an intra prediction mode related to a current block from a bitstream; obtains prediction samples of the current block by performing intra prediction on the current block based on the intra prediction mode; scans transform coefficients of the current block, obtains dequantized transform coefficients of the current block by performing a dequantization on the transform coefficients; determines a transform type of the current block; and obtains residual samples of the current block by performing an inverse-transform on the dequantized transform coefficients based on the determined transform type, the inverse-transform being performed in a horizontal direction and a vertical direction. The transform type is determined to be a Discrete Cosine Transform or Discrete Sine Transform, the size of the current block is equal to or greater than 4×4, and the transform type is determined independently to a direction of the intra prediction mode of the current block.

公开(公告)号：US11875802B2

公开(公告)日：2024-01-16

申请号：US17706400

申请日：2022-03-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jeong Il Seo ,  Seung Kwon Beack ,  Dae Young Jang ,  Kyeong Ok Kang ,  Tae Jin Park ,  Yong Ju Lee ,  Keun Woo Choi ,  Jin Woong Kim

IPC: G10L19/008 ,  H04S3/00

CPC classification number: G10L19/008 ,  H04S3/00

Abstract: An encoding/decoding apparatus and method for controlling a channel signal is disclosed, wherein the encoding apparatus may include an encoder to encode an object signal, a channel signal, and rendering information for the channel signal, and a bit stream generator to generate, as a bit stream, the encoded object signal, the encoded channel signal, and the encoded rendering information for the channel signal.

公开(公告)号：US11871031B2

公开(公告)日：2024-01-09

申请号：US16927003

申请日：2020-07-13

Applicant: Electronics and Telecommunications Research Institute ,  Industry-University Cooperation Foundation Korea Aerospace University

Inventor： Sung Chang Lim ,  Hui Yong Kim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Jae Gon Kim ,  Sang Yong Lee ,  Un Ki Park

IPC: H04N19/56 ,  H04N19/70 ,  H04N19/52 ,  H04N19/13 ,  H04N19/593 ,  H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176

CPC classification number: H04N19/56 ,  H04N19/13 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176

Abstract: Disclosed are a method for inducing a prediction motion vector and an apparatus using the same. An image decoding method can include: a step of determining the information related to a plurality of spatial candidate prediction motion vectors from peripheral predicted blocks of a predicted target block; and a step of determining the information related to temporal candidate prediction motion vectors on the basis of the information related to the plurality of spatial candidate prediction motion vectors. Accordingly, the present invention can reduce complexity and can enhance coding efficiency when inducing the optimum prediction motion vector.