公开(公告)号：US20160044337A1

公开(公告)日：2016-02-11

申请号：US14825825

申请日：2015-08-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Se Yoon JEONG ,  Suk Hee CHO ,  Ha Hyun LEE ,  Jong Ho KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN

IPC: H04N19/593 ,  H04N19/182 ,  H04N19/176 ,  H04N19/82 ,  H04N19/117

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/82

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction comprises the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

公开(公告)号：US20160044336A1

公开(公告)日：2016-02-11

申请号：US14823638

申请日：2015-08-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Se Yoon JEONG ,  Suk Hee CHO ,  Ha Hyun LEE ,  Jong Ho KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN

IPC: H04N19/593 ,  H04N19/44 ,  H04N19/176 ,  H04N19/182 ,  H04N19/82 ,  H04N19/117

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/82

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction comprises the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

公开(公告)号：US20150103912A1

公开(公告)日：2015-04-16

申请号：US14511333

申请日：2014-10-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/577

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46 ,  H04N19/52 ,  H04N19/573 ,  H04N19/58

Abstract: Disclosed are a method and apparatus for video encoding/decoding based on a multi-layer. The method for video decoding to support a plurality of layers, includes: decoding Picture Order Count (POC) reset information indicating whether a POC value of a current picture is reset to 0; calculating the POC value of the current picture and respective POC values of a long-term reference picture and a short-term reference picture in a decoded picture buffer (DPB) referred by the current picture; and configuring a Reference Picture Set (RPS) for inter-prediction of the current picture based on the POC value of the long-term reference picture and the POC value of the short-term reference picture.

Abstract translation: 公开了一种基于多层视频编码/解码的方法和装置。 用于支持多个层的视频解码方法包括：解码指示当前图像的POC值是否被重置为0的图像顺序计数（POC）复位信息; 计算当前图片的POC值和当前图片所引用的解码图像缓冲器（DPB）中的长期参考图像和短期参考图像的相应POC值; 以及基于长期参考图像的POC值和短期参考图像的POC值来配置用于当前图像的帧间预测的参考图像集（RPS）。

公开(公告)号：US20150010083A1

公开(公告)日：2015-01-08

申请号：US14324974

申请日：2014-07-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/583 ,  H04N19/196 ,  H04N19/82 ,  H04N19/51

CPC classification number: H04N19/187 ,  H04N19/105 ,  H04N19/30

Abstract: A video decoding method according to an embodiment of the present invention may include decoding information on a first-layer picture to which a second-layer picture as a decoding target refers; generating information on a base inter-layer reference picture using the information on the first-layer picture; generating information on an enhanced inter-layer reference picture using the information on the first-layer picture, the information on the base inter-layer reference picture and information on the second-layer picture; and generating a reference picture list used for inter prediction of the second-layer picture using the information on the base inter-layer reference picture, the information on the enhanced inter-layer reference picture and the information on the second-layer picture.

Abstract translation: 根据本发明的实施例的视频解码方法可以包括对作为解码目标的第二层图像所参照的第一层图像的解码信息; 使用关于第一层图像的信息在基础层间参考图像上生成信息; 使用关于第一层图像的信息，关于基础层间参考图像的信息和关于第二层图像的信息来生成关于增强的层间参考图像的信息; 以及使用关于基础层间参考图像的信息，关于增强的层间参考图像的信息和关于第二层图像的信息来生成用于第二层图像的帧间预测的参考图像列表。

公开(公告)号：US20140219337A1

公开(公告)日：2014-08-07

申请号：US14251113

申请日：2014-04-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/10 ,  H04N19/196 ,  H04N19/18 ,  H04N19/105 ,  H04N19/159

CPC classification number: H04N19/97 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82 ,  H04N19/86

Abstract: Provided are a method and apparatus for encoding and decoding images based on constrained offset compensation and a loop filter. The image decoding apparatus: receives, from an encoder, a first indicator indicating whether a sequence, a picture, a frame, a slice, a coding unit (CU), a prediction unit (PU), and/or a transform unit (TU) supports constrained offset compensation; receives, from the encoder, a second indicator indicating whether constrained sample adaptive offset (SAO) compensation or an adaptive loop filter (ALF) is applied; receives a parameter from the encoder; and applies the SAO compensation or the ALF to pixels of a restored image on the basis of the second indicator and the parameter.

Abstract translation: 提供了一种用于基于约束偏移补偿和环路滤波器对图像进行编码和解码的方法和装置。 图像解码装置从编码器接收指示序列，图像，帧，切片，编码单元（CU），预测单元（PU）和/或变换单元（TU）的第一指示符 ）支持约束偏移补偿; 从编码器接收指示是否应用受限采样自适应偏移（SAO）补偿或自适应环路滤波器（ALF）的第二指示符; 从编码器接收参数; 并且基于第二指示符和参数将SAO补偿或ALF应用于恢复图像的像素。

公开(公告)号：US20140205000A1

公开(公告)日：2014-07-24

申请号：US14221794

申请日：2014-03-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/80 ,  H04N19/82 ,  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：US20250106429A1

公开(公告)日：2025-03-27

申请号：US18977467

申请日：2024-12-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hui Yong KIM ,  Jin Ho LEE ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/51 ,  H04N19/105 ,  H04N19/182 ,  H04N19/196 ,  H04N19/42 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/82

Abstract: An image decoding method according to the present invention includes reconstructing a residual block by inverse-quantizing and inverse-transforming an entropy-decoded residual block, generating a prediction block by performing intra prediction on a current block, and reconstructing an picture by adding the reconstructed residual block to the prediction block, wherein generating the prediction block includes generating a final prediction value of a prediction target pixel included in the current block based on a first prediction value of the prediction target pixel and a final correction value calculated by performing an arithmetic right shift on a two's complementary integer representation for an initial correction value of the prediction target pixel by a binary digit of 1. Accordingly, upon image encoding/decoding, computation complexity may be reduced.

公开(公告)号：US20250106425A1

公开(公告)日：2025-03-27

申请号：US18977404

申请日：2024-12-11

Applicant: Electronics and Telecommunications Research Institute ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Ho KIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Sung Chang LIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Suk Hee CHO ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Mun Churl KIM ,  Bum Shik LEE

IPC: H04N19/44 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593 ,  H04N19/60 ,  H04N19/64 ,  H04N19/70

Abstract: Disclosed decoding method of the intra prediction mode comprises the steps of: determining whether an intra prediction mode of a present prediction unit is the same as a first candidate intra prediction mode or as a second candidate intra prediction mode on the basis of 1-bit information; and determining, among said first candidate intra prediction mode and said second candidate intra prediction mode, which candidate intra prediction mode is the same as the intra prediction mode of said present prediction unit on the basis of additional 1-bit information, if the intra prediction mode of the present prediction unit is the same as at least either the first candidate intra prediction mode or the second candidate intra prediction mode, and decoding the intra prediction mode of the present prediction unit.

公开(公告)号：US20250071324A1

公开(公告)日：2025-02-27

申请号：US18945720

申请日：2024-11-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/80 ,  H04N19/82 ,  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：US20250071271A1

公开(公告)日：2025-02-27

申请号：US18929071

申请日：2024-10-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Gwang Hoon PARK ,  Tae Hyun KIM ,  Dae Young LEE ,  Woo Woen GWUN ,  Won Jun LEE

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184

Abstract: An image encoding/decoding method and apparatus is provided. The method of decoding an image includes decoding at least one of prediction mode information of a neighbor block of a current block and length information of the current block, deriving an intra prediction mode of the current block into a predetermined mode using the decoded information, and reconstructing the current block based on the intra prediction mode of the current block.