公开(公告)号：US20230013063A1

公开(公告)日：2023-01-19

申请号：US17782489

申请日：2020-12-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Woong LIM ,  Gun BANG

IPC: H04N19/159 ,  H04N19/186 ,  H04N19/176

Abstract: Disclosed herein are a method, an apparatus and a storage medium for image encoding/decoding using a palette mode. Prediction using a palette mode may be performed for a target block. Various types of predictions may be performed for the target block, and pieces of information to be signaled from an encoding apparatus to a decoding apparatus may be changed depending on the type of prediction to be performed for the target block. Determination of the pieces of information to be signaled may be optimized for the case where a palette mode is to be used for the target block, and thus efficiency of image encoding and decoding may be improved.

公开(公告)号：US20220217407A1

公开(公告)日：2022-07-07

申请号：US17613866

申请日：2020-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gun BANG ,  Woong LIM ,  Hui Yong KIM

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/14 ,  H04N19/82 ,  H04N19/86 ,  H04N19/172

Abstract: Disclosed herein are a video encoding/decoding method and apparatus. The video decoding method according to the present invention includes: obtaining information on whether filtering is performed on a virtual boundary for a current picture from a bitstream; decoding information on the number of virtual boundaries based on the information on whether filtering is performed on a virtual boundary; decoding information on a position of a virtual boundary based on the information on the number of virtual boundaries; and reconstructing the current picture based on the information on the position of the virtual boundary.

公开(公告)号：US20210314566A1

公开(公告)日：2021-10-07

申请号：US17219141

申请日：2021-03-31

Applicant: Electronics and Telecommunications Research Institute

Inventor： Woong LIM ,  Gun BANG

IPC: H04N19/119 ,  H04N19/184 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70

Abstract: Disclosed herein are a method, an apparatus and a storage medium for image encoding/decoding. For efficient image compression, efficient syntax is required. Pieces of information required for image decoding may be structurally or semantically associated with each other. Based on this association, whether signaling of one piece of information is to be performed may be determined based on another piece of information. Further, based on this association, the signaling order or priority of multiple pieces of information may be determined. Depending on this determination, based on the number of subpictures present in a picture in high-level syntax, the number of slices present in the picture may be selectively signaled.