公开(公告)号：US12154302B2

公开(公告)日：2024-11-26

申请号：US17542002

申请日：2021-12-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joo-Young Lee ,  Se-Yoon Jeong ,  Hyoung-Jin Kwon ,  Dong-Hyun Kim ,  Youn-Hee Kim ,  Jong-Ho Kim ,  Ji-Hoon Do ,  Jin-Soo Choi ,  Tae-Jin Lee

IPC: G06T9/00

Abstract: Disclosed herein are a method, an apparatus and a storage medium for image encoding/decoding using a binary mask. An encoding method includes generating a latent vector using an input image, generating a selected latent vector component set using a binary mask, and generating a main bitstream by performing entropy encoding on the selected latent vector component set. A decoding method includes generating a selected latent vector component set including one or more selected latent vector components by performing entropy decoding on a main bitstream and generating the latent vector in which the one or more selected latent vector components are relocated by relocating the selected latent vector component set in the latent vector.

公开(公告)号：US11769276B2

公开(公告)日：2023-09-26

申请号：US17192480

申请日：2021-03-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joo-Young Lee ,  Se-Yoon Jeong ,  Hyoung-Jin Kwon ,  Dong-Hyun Kim ,  Youn-Hee Kim ,  Jong-Ho Kim ,  Tae-Jin Lee ,  Jin-Soo Choi

IPC: G06T9/00 ,  G06T3/40 ,  G06V10/764 ,  G06V10/82 ,  G06V10/44

CPC classification number: G06T9/002 ,  G06T3/4046 ,  G06V10/454 ,  G06V10/764 ,  G06V10/82

Abstract: An encoding apparatus extracts features of an image by applying multiple padding operations and multiple downscaling operations to an image represented by data and transmits feature information indicating the features to a decoding apparatus. The multiple padding operations and the multiple downscaling operations are applied to the image in an order in which one padding operation is applied and thereafter one downscaling operation corresponding to the padding operation is applied. A decoding method receives feature information from an encoding apparatus, and generates a reconstructed image by applying multiple upscaling operations and multiple trimming operations to an image represented by the feature information. The multiple upscaling operations and the multiple trimming operations are applied to the image in an order in which one upscaling operation is applied and thereafter one trimming operation corresponding to the upscaling operation is applied.

公开(公告)号：US11205257B2

公开(公告)日：2021-12-21

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: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  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：US10827173B2

公开(公告)日：2020-11-03

申请号：US16188587

申请日：2018-11-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Woong Lim ,  Seung-Hyun Cho ,  Joo-Young Lee ,  Youn-Hee Kim ,  Jin-Wuk Seok ,  Jong-Ho Kim ,  Dae-Yeol Lee ,  Se-Yoon Jeong ,  Hui-Yong Kim ,  Jin-Soo Choi

IPC: H04N19/124 ,  H04N19/70

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In quantization and dequantization, multiple quantization methods and multiple dequantization methods may be used. The multiple quantization methods include a variable-rate step quantization method and a fixed-rate step quantization method. The variable-rate step quantization method may be a quantization method in which an increment in a quantization step depending on an increase in a value of a quantization parameter by 1 is not fixed. The fixed-rate step quantization method may be a quantization method in which the increment in the quantization step depending on the increase of the value of the quantization parameter by 1 is fixed.