公开(公告)号：USRE49308E1

公开(公告)日：2022-11-22

申请号：US16908607

申请日：2020-06-22

Applicant: Electronics and Telecommunications Research Instit ,  IDEAHUB INC.

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 ,  Hae Chul Choi

IPC: H04N19/597 ,  H04N19/117 ,  H04N19/34 ,  H04N19/36 ,  H04N19/463 ,  H04N19/30 ,  H04N19/82 ,  H04N19/635 ,  H04N19/80

Abstract: Provided is a scalable video-decoding method based on multiple layers. The scalable video-decoding method according to the present invention comprises: a step of predicting first filter information of a video to be filtered using the information contained in an object layer and/or information contained in another layer, and generating second filter information in accordance with the prediction; and a step of filtering the video to be filtered using the second filter information. According to the present invention, the amount of information being transmitted is reduced, and video compression performance is improved.

公开(公告)号：US20180213238A1

公开(公告)日：2018-07-26

申请号：US15933051

申请日：2018-03-22

Applicant: Electronics and Telecommunications Research Instit

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

IPC: H04N19/159 ,  H04N19/187 ,  H04N19/184 ,  H04N19/30 ,  H04N19/172

CPC classification number: H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/187 ,  H04N19/30 ,  H04N19/70 ,  H05K999/99

Abstract: A method of decoding a image according to an embodiment of the present invention, which supports a plurality of layers, may comprise the steps of: receiving information on a reference layer used to decode a current picture for inter-layer prediction; inducing the number of valid reference layer pictures used to decode the current picture on the basis of the information on the reference layer; and performing inter-layer prediction on the basis of the number of valid reference layer pictures.

公开(公告)号：US12088807B2

公开(公告)日：2024-09-10

申请号：US18118004

申请日：2023-03-06

Applicant: IDEAHUB INC.

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: H04N19/00 ,  H04N19/119 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/33 ,  H04N19/463 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/119 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/33 ,  H04N19/463 ,  H04N19/70

Abstract: The present invention relates to a video encoding method and apparatus for setting and encoding quantization parameters, and to a video decoding method and apparatus for decoding and setting quantization parameters in a video encoding and decoding apparatus which uses blocks having various sizes and depths as encoding and decoding units.