公开(公告)号：US10455252B2

公开(公告)日：2019-10-22

申请号：US16025391

申请日：2018-07-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoon-Mi Hong ,  Woo-Jin Han ,  Min-Su Cheon ,  Jianle Chen

IPC: H04N19/60 ,  G06F17/14 ,  H04N19/625 ,  H04N19/126 ,  H04N19/176

Abstract: A video encoding method, a video encoding apparatus, a video decoding method, and a video decoding apparatus are provided. The video encoding method includes producing a fast transform matrix based on a transform matrix which is used for frequency transformation on a block which has a predetermined size; producing a transformed block by transforming the block having the predetermined size by using the fast transform matrix; and performing scaling with respect to the transformed block in order to correct a difference between the transform matrix used for the frequency transformation and the fast transform matrix.

公开(公告)号：US09788013B2

公开(公告)日：2017-10-10

申请号：US15149931

申请日：2016-05-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoon-Mi Hong ,  Woo-Jin Han ,  Min-Su Cheon ,  Jianle Chen

IPC: H04N19/60 ,  G06F17/14 ,  H04N19/625 ,  H04N19/126 ,  H04N19/176

CPC classification number: H04N19/60 ,  G06F17/147 ,  H04N19/126 ,  H04N19/176 ,  H04N19/625

Abstract: A video encoding method, a video encoding apparatus, a video decoding method, and a video decoding apparatus are provided. The video encoding method includes producing a fast transform matrix based on a transform matrix which is used for frequency transformation on a block which has a predetermined size; producing a transformed block by transforming the block having the predetermined size by using the fast transform matrix; and performing scaling with respect to the transformed block in order to correct a difference between the transform matrix used for the frequency transformation and the fast transform matrix.

公开(公告)号：US10038918B2

公开(公告)日：2018-07-31

申请号：US15700668

申请日：2017-09-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoon-Mi Hong ,  Woo-Jin Han ,  Min-Su Cheon ,  Jianle Chen

IPC: H04N19/60 ,  H04N19/126 ,  G06F17/14 ,  H04N19/176 ,  H04N19/625 ,  G06F7/32

CPC classification number: H04N19/60 ,  G06F17/147 ,  H04N19/126 ,  H04N19/176 ,  H04N19/625

Abstract: A video encoding method, a video encoding apparatus, a video decoding method, and a video decoding apparatus are provided. The video encoding method includes producing a fast transform matrix based on a transform matrix which is used for frequency transformation on a block which has a predetermined size; producing a transformed block by transforming the block having the predetermined size by using the fast transform matrix; and performing scaling with respect to the transformed block in order to correct a difference between the transform matrix used for the frequency transformation and the fast transform matrix.