公开(公告)号：US11425419B2

公开(公告)日：2022-08-23

申请号：US16990532

申请日：2020-08-11

Applicant: IDEAHUB INC.

Inventor： Yoonsik Choe ,  Jang Won Choi

IPC: H04N19/176 ,  H04N19/117 ,  H04N19/11 ,  H04N19/593 ,  H04N19/82 ,  H04N19/186 ,  H04N19/182 ,  H04N19/184

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit that receives an input image, calculates a correlation between a Luma area block and Chroma area block in the input image in intra prediction, removes high frequency ingredients by low-pass filtering an encoded luma pixel based on the calculated correlation, and generates a prediction block by applying an LM chroma mode, which is an extended chroma mode technique, to the luma pixel removed therefrom the high frequency ingredients.

公开(公告)号：US12149736B2

公开(公告)日：2024-11-19

申请号：US17865551

申请日：2022-07-15

Applicant: IDEAHUB INC.

Inventor： Yoonsik Choe ,  Jang Won Choi

IPC: H04N19/593 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/82 ,  H04N19/11

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit that receives an input image, calculates a correlation between a Luma area block and Chroma area block in the input image in intra prediction, removes high frequency ingredients by low-pass filtering an encoded luma pixel based on the calculated correlation, and generates a prediction block by applying an LM chroma mode, which is an extended chroma mode technique, to the luma pixel removed therefrom the high frequency ingredients.