公开(公告)号：US20190268604A1

公开(公告)日：2019-08-29

申请号：US16407095

申请日：2019-05-08

Applicant: Ideahub Inc.

Inventor： Je Chang JEONG ,  Soon Jong JIN ,  Sang Jun PARK ,  Hyuk LEE

IPC: H04N19/159 ,  H04N19/547 ,  H04N19/513 ,  H04N19/152 ,  H04N19/11 ,  H04N19/124 ,  H04N19/176 ,  H04N19/61 ,  H04N19/196

Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.

公开(公告)号：US20190268603A1

公开(公告)日：2019-08-29

申请号：US16407086

申请日：2019-05-08

Applicant: Ideahub Inc.

Inventor： Je Chang JEONG ,  Soon Jong JIN ,  Sang Jun PARK ,  Hyuk LEE

IPC: H04N19/159 ,  H04N19/547 ,  H04N19/513 ,  H04N19/152 ,  H04N19/11 ,  H04N19/124 ,  H04N19/176 ,  H04N19/61 ,  H04N19/196

Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.

公开(公告)号：US10277660B1

公开(公告)日：2019-04-30

申请号：US16228097

申请日：2018-12-20

Applicant: IDEAHUB INC.

Inventor： Truong Cong Thang ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Soon Heung Jung ,  Sang Taick Park ,  Won Ryu ,  Jae Gon Kim

IPC: G06F15/16 ,  H04L29/08 ,  H04L29/06 ,  H04N21/8543 ,  H04N21/84 ,  H04N21/658 ,  H04N21/61 ,  H04N21/472 ,  H04N21/262 ,  H04N21/2343 ,  H04N21/43

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata may include one or more BaseURL elements. Uniform Resource Locators (URLs) of segments forming media may be generated based on the BaseURL elements. Additionally, a URL of a segment may be generated by mapping a BaseURL element among the BaseURL elements to a sourceURL attribute of the segment. Segments indicated by generated URLs may be identical to each other.

公开(公告)号：US20250039442A1

公开(公告)日：2025-01-30

申请号：US18911731

申请日：2024-10-10

Applicant: IDEAHUB INC.

Inventor： Yoonsik CHOE ,  Jang Won CHOI

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

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：US11968373B2

公开(公告)日：2024-04-23

申请号：US17407865

申请日：2021-08-20

Applicant: Ideahub Inc.

Inventor： Je Chang Jeong ,  Soon Jong Jin ,  Sang Jun Park ,  Hyuk Lee

IPC: H04N19/159 ,  H04N19/11 ,  H04N19/124 ,  H04N19/152 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/50 ,  H04N19/513 ,  H04N19/547 ,  H04N19/61

CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/124 ,  H04N19/152 ,  H04N19/176 ,  H04N19/197 ,  H04N19/513 ,  H04N19/547 ,  H04N19/61 ,  H04N19/184 ,  H04N19/50

Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.

公开(公告)号：US20230353761A1

公开(公告)日：2023-11-02

申请号：US18337356

申请日：2023-06-19

Applicant: IDEAHUB INC.

Inventor： Yoon Sik CHOE ,  Jang Won CHOI

IPC: H04N19/186 ,  H04N19/80 ,  H04N19/117

CPC classification number: H04N19/186 ,  H04N19/80 ,  H04N19/117 ,  H04N19/11

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：US20220217365A1

公开(公告)日：2022-07-07

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

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：US10826956B2

公开(公告)日：2020-11-03

申请号：US16166492

申请日：2018-10-22

Applicant: IDEAHUB, INC.

Inventor： Seong Yong Lim ,  Joo Myoung Seok ,  Sang Woo Ahn ,  Yong Ju Cho ,  Ji Hun Cha

IPC: H04L29/06

Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.

公开(公告)号：US20190379715A1

公开(公告)日：2019-12-12

申请号：US16421087

申请日：2019-05-23

Applicant: IDEAHUB INC.

Inventor： Truong Cong Thang ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Soon Heung Jung ,  Sang Taick Park ,  Won Ryu

IPC: H04L29/06 ,  H04N21/239 ,  H04N21/845 ,  H04N21/2343 ,  H04N21/258 ,  H04N21/262 ,  H04L29/08

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata of the content may be efficiently divided for a purpose of use of a terminal based on general media information or specific media information, and may be transmitted to the terminal. A group may include one or more representations of content. The metadata may include a group element, and the group element may provide a summary of attributes of one or more representations included in the group.

公开(公告)号：US20190124132A1

公开(公告)日：2019-04-25

申请号：US16228097

申请日：2018-12-20

Applicant: IDEAHUB INC.

Inventor： Truong Cong THANG ,  Jin Young LEE ,  Seong Jun BAE ,  Jung Won KANG ,  Soon Heung JUNG ,  Sang Taick PARK ,  Won RYU ,  Jae Gon KIM

IPC: H04L29/08 ,  H04L29/06 ,  H04N21/8543 ,  H04N21/84 ,  H04N21/658 ,  H04N21/61 ,  H04N21/472 ,  H04N21/262 ,  H04N21/2343

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata may include one or more BaseURL elements. Uniform Resource Locators (URLs) of segments forming media may be generated based on the BaseURL elements. Additionally, a URL of a segment may be generated by mapping a BaseURL element among the BaseURL elements to a sourceURL attribute of the segment. Segments indicated by generated URLs may be identical to each other.