公开(公告)号：US20240236329A1

公开(公告)日：2024-07-11

申请号：US18616776

申请日：2024-03-26

Applicant: HFI Innovation Inc.

Inventor： Yu-Cheng LIN ,  Chun-Chia CHEN ,  Chih-Wei HSU ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Yu-Wen HUANG

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513

Abstract: Exemplary video processing methods and apparatuses for encoding or decoding a current block by inter prediction are disclosed. Input data of a current block is received and partitioned into sub-partitions and motion refinement is independently performed on each sub-partition. A reference block for each sub-partition is obtained from one or more reference pictures according to an initial motion vector (MV). A refined MV for each sub-partition is derived by searching around the initial MV with N-pixel refinement. One or more boundary pixels of the reference block for a sub-partition is padded for motion compensation of the sub-partition. A final predictor for the current block is generated by performing motion compensation for each sub-partition according to its refined MV. The current block is then encoded or decoded according to the final predictor.

公开(公告)号：US20230300373A1

公开(公告)日：2023-09-21

申请号：US18321606

申请日：2023-05-22

Applicant: HFI Innovation Inc.

Inventor： Zhi-Yi LIN ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Chih-Wei HSU

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/61 ,  H04N19/70

Abstract: An image or video processing method comprises receiving input data of a current block, mapping an MIP mode index to a default mode, and encoding or decoding the current block by referencing the default mode. Another image or video processing method comprises receiving input data of a current block coded or to be coded by an MIP mode, and parsing or signaling a transpose flag for the current block indicating whether transposing is applied in coding the current block. Reference samples of the current block are prepared from neighboring boundary samples according to the transpose flag. A matrix is selected to be multiplied to the reference samples to generate predicted samples. A transposing process is adaptively applied to the current block according to the transpose flag, and the predicted samples are used to encode or decode the current block.

公开(公告)号：US20230140961A1

公开(公告)日：2023-05-11

申请号：US18150576

申请日：2023-01-05

Applicant: HFI Innovation Inc.

Inventor： Zhi-Yi LIN ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Chia-Ming TSAI

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: Video processing methods include receiving input data of a current block in a current slice, determine determining whether one or more components of the current block satisfy one or more predefined criteria during partitioning, and applying a mode constraint to the current block only if the one or more components of the current block satisfy the one or more predefined criteria, wherein the mode constraint restricts all blocks within the current block to be processed by a same prediction mode when the current block is split into a plurality of blocks. The methods adaptively split the current block into one or more blocks, and pare one or more prediction mode syntax elements of a first block in the current block according to a constrained mode of the current block. The methods further encode the current block with the mode constraint.

公开(公告)号：US20230130131A1

公开(公告)日：2023-04-27

申请号：US17904836

申请日：2021-02-24

Applicant: HFI Innovation Inc.

Inventor： Man-Shu CHIANG ,  Chih-Wei HSU ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN

IPC: H04N19/60 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A method for video encoding and decoding using Low-Frequency Non-Separable Transform (LFNST) mode and apparatus thereof are disclosed. The input data correspond to primary transformed data at the encoder and the input data correspond to coded data of the current CU at the decoder. A CU is partitioned into one or more transform blocks (TBs). An LFNST syntax is determined at an encoder side or at a decoder side if one or more conditions are satisfied. The LFNST syntax indicates whether the LFNST mode is applied to the current CU and/or which LFNST kernel is applied when the LFNST mode is applied. The conditions comprise the CBF indications for the target TBs being false. The current CU is encoded or decoded according to the LFNST mode as indicated by the LFNST syntax.

公开(公告)号：US20230007281A1

公开(公告)日：2023-01-05

申请号：US17781497

申请日：2020-12-10

Applicant: HFI Innovation Inc.

Inventor： Tzu-Der CHUANG ,  Chih-Wei HSU ,  Ching-Yeh CHEN ,  Chia-Ming TSAI ,  Chun-Chia CHEN ,  Olena CHUBACH ,  Lulin CHEN ,  Yu-Wen HUANG

IPC: H04N19/196 ,  H04N19/139 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/52

Abstract: Video processing methods and apparatuses for processing a current block in a current picture by reference picture resampling include receiving input data of the current block, determining a scaling window of the current picture and a scaling window of a reference picture. The current picture and reference picture may have different scaling window sizes. A ratio between a scaling window width, height, or size of the current picture and a scaling window width, height, or size of the reference picture is constrained to be within a ratio constraint. A reference block is generated from the reference picture according to the ratio, and used to encode or decode the current block.

公开(公告)号：US20220385946A1

公开(公告)日：2022-12-01

申请号：US17783954

申请日：2020-12-10

Applicant: HFI Innovation Inc.

Inventor： Man-Shu CHIANG ,  Tzu-Der CHUANG ,  Chih-Wei HSU ,  Ching-Yeh CHEN ,  Zhi-Yi LIN

IPC: H04N19/70 ,  H04N19/96 ,  H04N19/186 ,  H04N19/176

Abstract: In a method and apparatus for video coding using Low-Frequency Non-Separable Transform (LFNST) mode, a coding unit (CU) is partitioned into one or more transform blocks (TBs). A syntax is determined at an encoder side or at a decoder side, where the determining step is performed by signaling the syntax at the encoder side or by parsing the syntax at the decoder side if one or more conditions are satisfied. The syntax indicates whether the LFNST mode is applied to the current CU and/or which LFNST kernel is applied when the LFNSF is applied, and the conditions comprise a target condition corresponding to that all target TBs in a target TB set have a TS mode indication as false, and the target TB set is selected from the TBs in the current CU. The current CU is encoded or decoded according to the LFNST mode.

公开(公告)号：US20220329874A1

公开(公告)日：2022-10-13

申请号：US17851268

申请日：2022-06-28

Applicant: HFI Innovation Inc.

Inventor： Ching-Yeh CHEN ,  Olena CHUBACH ,  Chen-Yen LAI ,  Tzu-Der CHUANG ,  Chih-Wei HSU ,  Yu-Wen HUANG

IPC: H04N19/82 ,  H04N19/176 ,  H04N19/186 ,  H04N19/174 ,  H04N19/46 ,  H04N19/172 ,  H04N19/117 ,  H04N19/70

Abstract: Encoding methods and apparatuses include receiving input video data of a current block in a current picture and applying a Cross-Component Adaptive Loop Filter (CCALF) processing on the current block based on cross-component filter coefficients to refine chroma components of the current block according to luma sample values. The method further includes signaling two Adaptive Loop Filter (ALF) signal flags and two CCALF signal flags in an Adaptation Parameter Set (APS) with an APS parameter type equal to ALF or parsing two ALF signal flags and two CCALF signal flags from an APS with an APS parameter type equal to ALF, signaling or parsing one or more Picture Header (PH) CCALF syntax elements or Slice Header (SH) CCALF syntax elements, wherein both ALF and CCALF signaling are present either in a PH or SH, and encoding or decoding the current block in the current picture.

公开(公告)号：US20220303587A1

公开(公告)日：2022-09-22

申请号：US17636935

申请日：2020-09-02

Applicant: HFI Innovation Inc.

Inventor： Chen-Yen LAI ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Lulin CHEN

IPC: H04N19/82 ,  H04N19/182 ,  H04N19/117 ,  H04N19/96

Abstract: Methods and apparatus for video coding using Adaptive Loop Filter (ALF) processing are disclosed. According to one method, the ALF virtual boundary processing is always applied to the bottom CTU row regardless whether the bottom CTU row is for a picture or a sub-picture. In another method, the ALF padding process is unified for different boundary types belonging to the target boundary belongs to a boundary-type group comprising two or more of slice boundary, tile boundary, VR360 face boundary, and sub-picture boundary. In yet another method, the ALF VB processing has a fixed priority for a corner region that both horizontal and vertical virtual boundaries can be applied.

公开(公告)号：US20220286714A1

公开(公告)日：2022-09-08

申请号：US17634341

申请日：2020-08-21

Applicant: HFI Innovation Inc.

Inventor： Zhi-Yi LIN ,  Tzu-Der CHUANG ,  Ching-Yeh CHEN

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70

Abstract: A method and apparatus of video coding are disclosed. According to one method of the present invention, a root block comprising one luma component and one or more chroma components in a 420 or 422 chroma format is received at the encoder side or compressed data comprising the root block at the decoder side. A target mode type is determined for all of the child blocks within the root block when one or more conditions are satisfies. The conditions comprise a child block width equal to 2 or a child block less than 16 for the chroma components. If Intra type mode is not selected for an image area enclosing the root block, the target mode type corresponds to the Intra or Inter type mode and otherwise, the target mode type corresponds to the Intra type mode. The child blocks in the root block are encoded or decoded accordingly.

公开(公告)号：US20180098093A1

公开(公告)日：2018-04-05

申请号：US15563811

申请日：2016-04-08

Applicant: HFI Innovation Inc.

Inventor： Jing YE ,  Jungsun KIM ,  Shan LIU ,  Wang-Lin LAI ,  Tzu-Der CHUANG

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/70 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463 ,  H04N19/593 ,  H04N19/91

Abstract: A simplified syntax signalling for the number of palette indices is disclosed, where the syntax element corresponding to the total number of palette indices minus one is signalled and the palette indices are associated with the copy-index modes in the current block. In another embodiment, a syntax corresponding to the number of palette indices minus 1 is signalled, where the palette indices are associated with the copy-index modes in the current block. According to this embodiment, the syntax is constrained to a range from 0 to block size minus 1. In yet another embodiment, conformance constraint is imposed on the palette predictor run. For a current position of the palette predictor list, a syntax element corresponding to a current palette predictor run is parsed from the input bitstream and the syntax element is constrained to a range of values access valid entries in the palette predictor.