公开(公告)号：US12301842B2

公开(公告)日：2025-05-13

申请号：US18337356

申请日：2023-06-19

Applicant: IDEAHUB INC.

Inventor： Yoon Sik Choe ,  Jang Won Choi

IPC: H04N19/00 ,  H04N19/117 ,  H04N19/186 ,  H04N19/80 ,  H04N19/11 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit receives an input image, removes high frequency ingredients by low pass filtering an encoded luma pixel value in the input image during intra prediction, and generates a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, which is an extended chroma mode technique for generating a prediction block by predicting the chroma pixel value by applying a correlation between color planes to the luma pixel value having removed therefrom the high frequency ingredients.

公开(公告)号：US11252421B2

公开(公告)日：2022-02-15

申请号：US17138076

申请日：2020-12-30

Applicant: IDEAHUB INC.

Inventor： Yoon Sik Choe ,  Jang Won Choi

IPC: H04N19/186 ,  H04N19/80 ,  H04N19/117 ,  H04N19/11 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit receives an input image, removes high frequency ingredients by low pass filtering an encoded luma pixel value in the input image during intra prediction, and generates a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, which is an extended chroma mode technique for generating a prediction block by predicting the chroma pixel value by applying a correlation between color planes to the luma pixel value having removed therefrom the high frequency ingredients.

公开(公告)号：US11683506B2

公开(公告)日：2023-06-20

申请号：US17576610

申请日：2022-01-14

Applicant: IDEAHUB INC.

Inventor： Yoon Sik Choe ,  Jang Won Choi

IPC: H04N19/186 ,  H04N19/80 ,  H04N19/117 ,  H04N19/11 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70

CPC classification number: H04N19/186 ,  H04N19/117 ,  H04N19/80 ,  H04N19/11 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit receives an input image, removes high frequency ingredients by low pass filtering an encoded luma pixel value in the input image during intra prediction, and generates a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, which is an extended chroma mode technique for generating a prediction block by predicting the chroma pixel value by applying a correlation between color planes to the luma pixel value having removed therefrom the high frequency ingredients.