公开(公告)号：US20220109853A1

公开(公告)日：2022-04-07

申请号：US17553449

申请日：2021-12-16

Applicant: Intel Corporation

Inventor： Ximin Zhang ,  Yi-Jen Chiu ,  Keith Rowe

IPC: H04N19/147 ,  G06N20/00 ,  H04N19/117 ,  H04N19/127 ,  H04N19/107

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to improve video encoding. An example apparatus includes at least one memory, instructions, and processor circuitry to generate a pool of clipping index set candidates by executing a machine learning model, select a clipping index set from the pool of the clipping index set candidates based on a rate distortion cost associated with the clipping index set, the clipping index set including clipping coefficients, and filter a video frame based on the clipping coefficients.

公开(公告)号：US11108987B2

公开(公告)日：2021-08-31

申请号：US16707986

申请日：2019-12-09

Applicant: Intel Corporation

Inventor： Joydeep Ray ,  Abhishek R. Appu ,  Stanley J. Baran ,  Sang-Hee Lee ,  Atthar H. Mohammed ,  Jong Dae Oh ,  Hiu-Fai R. Chan ,  Ximin Zhang

IPC: H04N17/00 ,  H04N13/00 ,  H04N5/52 ,  H04N19/124 ,  H04N19/154 ,  H04N13/139 ,  H04N19/176 ,  H04N19/167 ,  H04N19/597 ,  H04N19/436 ,  H04N19/86 ,  H04N5/232 ,  H04N5/14

Abstract: An embodiment may include a display processor, memory to store a 2D frame corresponding to a projection from a 360 video, and a quality selector to select a quality factor for a block of the 2D frame based on quality information from neighboring blocks of the 2D frame, including blocks which are neighboring only in the 360 video space. The system may also include a range adjuster to adjust a search range for the 2D frame based on a search area of the 2D frame, a viewport manager to determine if a request for a viewport of the 2D frame extends beyond a first edge of the 2D frame and to fill the requested viewport with wrap-around image information, and/or a motion estimator to estimate motion information based on both color information and depth information. Other embodiments are disclosed and claimed.

公开(公告)号：US20210218954A1

公开(公告)日：2021-07-15

申请号：US17252843

申请日：2018-09-28

Applicant: Intel Corporation

Inventor： Changliang Wang ,  Ximin Zhang ,  Jill Boyce ,  Sang-Hee Lee ,  Scott Janus ,  Yunbiao Lin

IPC: H04N19/102 ,  H04N19/146

Abstract: Embodiments are generally directed to transport controlled video coding. An embodiment of an apparatus includes one or more processors to process data; a memory to store data, including data for video streaming; and a video processing mechanism including an encoder and a transport mechanism, wherein the video processing mechanism is to generate a prediction of channel throughput for a network channel, encode one or more bitstreams based on the prediction, including encoding a plurality of bitstreams including a first bitstream and a second bitstream if the prediction indicates an increase or decrease in channel throughput and encoding a single bitstream if the prediction indicates a stable channel throughput; and select a bitstream of the one or more bitstreams for a current frame.

公开(公告)号：US20210144377A1

公开(公告)日：2021-05-13

申请号：US16953098

申请日：2020-11-19

Applicant: Intel Corporation

Inventor： Zhijun Lei ,  Ximin Zhang ,  Sang-hee Lee

IPC: H04N19/124 ,  H04N19/61 ,  H04N19/18 ,  H04N19/176

Abstract: Techniques related to video coding include content adaptive quantization that provides a selection between objective quality and subjective quality delta QP offsets.

公开(公告)号：US10931950B2

公开(公告)日：2021-02-23

申请号：US16195531

申请日：2018-11-19

Applicant: Intel Corporation

Inventor： Ximin Zhang ,  Sang-hee Lee ,  Keith W. Rowe

IPC: H04N19/126 ,  H04N19/146 ,  H04N19/172 ,  H04N19/159 ,  H04N19/142

Abstract: Techniques related to coding video using adaptive quantization rounding offsets for use in transform coefficient quantization are discussed. Such techniques may include determining the value of a quantization rounding offset for a picture of a video sequence based on evaluating a maximum coding bit limit of the picture, a quantization parameter of the picture, and parameters corresponding to the video.

公开(公告)号：US10397574B2

公开(公告)日：2019-08-27

申请号：US14275109

申请日：2014-05-12

Applicant: Intel Corporation

Inventor： Ximin Zhang ,  Sang-Hee Lee ,  Zhijun Lei

IPC: H04N7/12 ,  H04N19/124 ,  H04N19/172 ,  H04B1/66 ,  H04N19/503 ,  H04N19/593 ,  H04N19/65 ,  H04N19/14 ,  H04N19/142 ,  H04N19/146

Abstract: Systems and methods for determining quantization parameter (QP) for video coding. Embodiments may be particularly advantageous for strongly temporal correlated frames, such as for video conferencing applications. An initial QP for a frame of a video sequence may be modified based on a spatial complexity or a temporal complexity associated with the video frame, and/or based on an inter-predicted frame bitrate target cycle, as a function of whether the frame is intra- or inter-predicted. The inter-predicted frame bitrate target cycle includes a sequence of two or more inter-predicted frame bitrate targets that are assigned to the frame according to the inter-predicted frame bitrate target cycle. A reference frame for an inter-predicted frame may be selected based on the bitrate target associated with candidate reference frames. Initial QP of an inter-predicted frame with a scene change may be modified in a manner independent of an inter-predicted frame bitrate target cycle.

公开(公告)号：US20190052911A1

公开(公告)日：2019-02-14

申请号：US16001488

申请日：2018-06-06

Applicant: Intel Corporation

Inventor： Ximin Zhang ,  Sang-Hee Lee ,  Keith W. Rowe

IPC: H04N19/82 ,  H04N19/117

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/136 ,  H04N19/172 ,  H04N19/182

Abstract: Techniques related to selecting restoration filter coefficients for 2-dimensional loop restoration filters for super resolution video coding are discussed. Such techniques include upscaling reconstructed video frames along only a first dimension and selecting filter coefficients for portions of the frame by an evaluation that, for each pixel of the portion, uses only pixel values that are aligned with the first dimension. Selection of filter coefficients for the second dimension may be skipped or made using only a subset of available filter coefficients.

公开(公告)号：US20190052877A1

公开(公告)日：2019-02-14

申请号：US16048952

申请日：2018-07-30

Applicant: INTEL CORPORATION

Inventor： Ximin Zhang ,  Sang-Hee Lee ,  Keith W. Rowe

IPC: H04N19/124 ,  H04N19/117 ,  H04N19/82

Abstract: Techniques related to coding video using adaptive in-loop filtering enablement are discussed. Such techniques may include determining whether or not to perform in-loop filtering based on evaluating a maximum coding bit limit of a picture of the video, a quantization parameter of the picture, and a coding structure of the video.

公开(公告)号：US20180184089A1

公开(公告)日：2018-06-28

申请号：US15392449

申请日：2016-12-28

Applicant: Intel Corporation

Inventor： Ximin Zhang ,  Sang-Hee Lee

IPC: H04N19/126 ,  H04N19/31 ,  H04N19/15

CPC classification number: H04N19/172 ,  H04N19/114 ,  H04N19/124 ,  H04N19/146 ,  H04N19/31

Abstract: A system, method, and apparatus for video encoding with a target bit allocation is described herein. The method comprises obtaining an initial bit allocation ratio, estimating a temporal correlation, and adjusting the initial bit allocation ratio based on the temporal correlation. The method also comprises calculating a target frame size based on the adjusted bit allocation ratio and the temporal correlation and generating transform coefficients to achieve a quantization parameter based on the target frame size.

公开(公告)号：US20250126261A1

公开(公告)日：2025-04-17

申请号：US18991939

申请日：2024-12-23

Applicant: Intel Corporation

Inventor： James Holland ,  Sang-hee Lee ,  Ximin Zhang ,  Zhan Lou

IPC: H04N19/126 ,  G06N20/00 ,  H04N19/149 ,  H04N19/172

Abstract: Techniques related to adaptive quantization matrix selection using machine learning for video coding are discussed. Such techniques include applying a machine learning model to generate an estimated quantization parameter for a frame and selecting a set of quantization matrices for encode of the frame from a number of sets of quantization matrices based on the estimated quantization parameter.