公开(公告)号：US20220094977A1

公开(公告)日：2022-03-24

申请号：US17479811

申请日：2021-09-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong-Hyun KIM ,  Ji-Hoon DO ,  Youn-Hee KIM ,  Se-Yoon JEONG ,  Hyoung-Jin KWON ,  Jong-Ho KIM ,  Joo-Young LEE ,  Jin-Soo CHOI ,  Tae-Jin LEE

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/436 ,  H04N19/136 ,  H04N19/184 ,  G06N3/04

Abstract: Disclosed herein are a method, an apparatus, and a storage medium for image encoding/decoding. An intra-prediction mode for the target block is derived, and intra-prediction for the target block that uses the derived intra-prediction mode is performed. The intra-prediction mode for the target block is derived using an artificial neural network, and an MPM list for the target block is derived using information about the target block, pieces of information about blocks adjacent to the target block, and the artificial neural network. The artificial neural network outputs one or more available intra-prediction modes. Further, the artificial neural network outputs match probabilities for one or more candidate intra-prediction modes, and each of the match probabilities for the candidate intra-prediction modes indicates a probability that the corresponding candidate intra-prediction mode matches the intra-prediction mode for the target block.

公开(公告)号：US20200175668A1

公开(公告)日：2020-06-04

申请号：US16697585

申请日：2019-11-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Se-Yoon JEONG ,  Dae-Yeol LEE ,  Seung-Hyun CHO ,  Hyunsuk KO ,  Youn-Hee KIM ,  Jong-Ho KIM ,  Jin-Wuk SEOK ,  Joo-Young LEE ,  Woong LIM ,  Hui-Yong KIM ,  Jin-Soo CHOI

IPC: G06T7/00 ,  G06T7/13 ,  H04N17/00

Abstract: Disclosed herein are a method and apparatus for measuring video quality based on a perceptually sensitive region. The quality of video may be measured based on a perceptually sensitive region and a change in the perceptually sensitive region. The perceptually sensitive region includes a spatial perceptually sensitive region, a temporal perceptually sensitive region, and a spatio-temporal perceptually sensitive region. Perceptual weights are applied to a detected perceptually sensitive region and a change in the detected perceptually sensitive region. Distortion is calculated based on the perceptually sensitive region and the change in the perceptually sensitive region, and a result of quality measurement for a video is generated based on the calculated distortion.

公开(公告)号：US20200162736A1

公开(公告)日：2020-05-21

申请号：US16684041

申请日：2019-11-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin-Wuk SEOK ,  Hyunsuk KO ,  Youn-Hee KIM ,  Jong-Ho KIM ,  Joo-Young LEE ,  Woong LIM ,  Se-Yoon JEONG ,  Seung-Hyun CHO ,  Hui-Yong KIM ,  Jin-Soo CHOI

IPC: H04N19/124 ,  H04N19/18 ,  H04N19/184

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In image encoding, encoding using multiple quantization parameters is performed on a transform coefficient. Two quantized coefficients are generated through encoding that uses two quantization parameters. Based on the two quantized coefficients, a quantized coefficient difference is generated. Information about the quantized coefficient difference is transmitted from an encoding apparatus to a decoding apparatus through binary encoding. The information about the quantized coefficient difference may be selectively transmitted. By means of the information about the quantized coefficient difference, a high-quality video may be provided.

公开(公告)号：US20170104993A1

公开(公告)日：2017-04-13

申请号：US15287345

申请日：2016-10-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Se-Yoon JEONG ,  Hui-Yong KIM ,  Jong-Ho KIM ,  Sung-Chang LIM ,  Shanglin Yang ,  C.-C. Jay Kuo ,  Qin Huang

IPC: H04N19/109 ,  H04N19/114 ,  H04N19/31 ,  H04N19/177

CPC classification number: H04N19/31 ,  H04N19/132 ,  H04N19/136 ,  H04N19/154 ,  H04N19/172

Abstract: Disclosed herein are a method and apparatus that adaptively perform encoding and decoding based on image quality. An encoding apparatus may determine optimal Frames Per Second (FPS) for a video and may encode the video based on the determined FPS. Further, the encoding apparatus may provide improved temporal scalability. A decoding apparatus may select a frame to be displayed from among frames of a video depending on a required minimum satisfied user ratio. Through the selection of the frame, the decoding apparatus may provide improved temporal scalability.