公开(公告)号：US20250016358A1

公开(公告)日：2025-01-09

申请号：US18783100

申请日：2024-07-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Haitao Yang ,  Huanbang Chen ,  Shan Gao

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/182

Abstract: A picture prediction method is provided, which includes: obtaining initial motion information of a current picture block; determining, based on a matching cost criterion, that positions of a pair of reference blocks are a position of a target forward reference block of the current picture block and a position of a target backward reference block of the current picture block, where positions of each pair of reference blocks include a position of a forward reference block and a position of a backward reference block; and for the positions of each pair of reference blocks, a first position offset and a second position offset are in a mirror relationship; and obtaining a predicted value of a pixel value of the current picture block based on a pixel value of the target forward reference block and a pixel value of the target backward reference block.

公开(公告)号：US11889102B2

公开(公告)日：2024-01-30

申请号：US17590580

申请日：2022-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang Chen ,  Sixin Lin ,  Haitao Yang ,  Shan Gao

IPC: H04N19/52 ,  H04N19/117 ,  H04N19/119 ,  H04N19/86 ,  H04N19/139 ,  H04N19/176 ,  H04N19/583 ,  H04N19/61 ,  H04N19/43

CPC classification number: H04N19/52 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/43 ,  H04N19/583 ,  H04N19/61 ,  H04N19/86

Abstract: The present invention relates to the field of video image processing, and provides a filtering method and an apparatus, to resolve a problem that subjective quality and objective quality of an image deteriorate because filtering processing cannot be performed on internal blocks of a non-translational motion prediction unit.

公开(公告)号：US11765480B2

公开(公告)日：2023-09-19

申请号：US17582358

申请日：2022-01-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yifan Fu ,  Shan Gao ,  Jiantong Zhou ,  Jing Xiao

IPC: H04N25/75 ,  H04N25/50 ,  H04N25/772

CPC classification number: H04N25/75 ,  H04N25/50 ,  H04N25/772

Abstract: This application provides a pixel collection circuit comprising an optical-to-electrical converter circuit configured to convert a collected optical signal into an analog signal; an analog-to-digital converter circuit configured to: receive the analog signal from the optical-to-electrical converter circuit; and perform analog-to-digital conversion on the analog signal to obtain a digital signal; a differential circuit configured to: receive the digital signal from the analog-to-digital converter circuit; and obtain a difference signal between a digital signal of a previous triggering moment and the digital signal of a current triggering moment; the previous triggering moment and the current triggering moment are determined by at least a digital clock signal; a comparison circuit configured to receive the difference signal from the differential circuit, and output a pulse signal. A digital component is used to implement the pixel collection circuit in the dynamic vision sensor, so as to reduce noise, reduce interference, and facilitate debugging.

公开(公告)号：US11363274B2

公开(公告)日：2022-06-14

申请号：US16898973

申请日：2020-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Shan Gao ,  Haitao Yang

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

Abstract: A video data inter prediction method is provided, which includes: determining a candidate motion information list of a current picture block, where the candidate motion information list includes at least one first candidate motion information group, at least one second candidate motion information group, the first candidate motion information group is a motion information group determined based on motion information of preset locations on a first neighboring picture block of the current picture block and a motion model of the first neighboring picture block, the second candidate motion information group is a set of motion information of at least two sample locations that are respectively neighboring to at least two preset locations on the current picture block; determining target motion information from the candidate motion information list; and performing inter prediction on the current picture block based on the target motion information.

公开(公告)号：US11310445B2

公开(公告)日：2022-04-19

申请号：US17215729

申请日：2021-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhaolei Xiao ,  Jiantong Zhou ,  Yuntan Fang ,  Shan Gao ,  Zhenhua Wu ,  Jing Xiao

IPC: H04N5/351 ,  H04N5/378

Abstract: This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.

公开(公告)号：US11095891B2

公开(公告)日：2021-08-17

申请号：US16263824

申请日：2019-01-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Gao

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96 ,  H04N19/70

Abstract: An encoding and decoding method, where the decoding method includes obtaining first information of a coding tree unit (CTU) in a to-be-decoded picture from a bitstream, where the first information indicates an allowed value range of a width-to-height ratio of a coding unit (CU) obtained by dividing the CTU, obtaining division information of the CTU from the bitstream, dividing the CTU into one or more CUs based on the first information and the division information, where a width-to-height ratio of the one or more CUs falls within the value range indicated by the first information, and the plurality of CUs do not overlap each other, and decoding the one or more CUs to obtain a reconstructed pixel of the one or more CUs.

公开(公告)号：US20150296208A1

公开(公告)日：2015-10-15

申请号：US14751373

申请日：2015-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Lina Sun

IPC: H04N19/124 ,  H04N19/85

CPC classification number: H04N19/124 ,  H04N17/004 ,  H04N19/14 ,  H04N19/154 ,  H04N19/174 ,  H04N19/197 ,  H04N19/85

Abstract: A method and a device for assessing video encoding quality. The method includes: acquiring a quantization parameter of a slice of a video frame and a quantity of bytes per pixel of the slice of the video frame of the video stream; determining complexity of content of the video according to the quantity of bytes per pixel of the slice of the video frame of the video stream; and predicting the video encoding quality according to the complexity of content of the video and the quantization parameter of the video. In the present invention, the complexity of content of the video is also considered in predicting the video encoding quality. Therefore, encoding quality predicted by a model that is obtained by considering the complexity of content of the video better satisfies subjective feelings of human eyes, thereby improving accuracy of prediction.

Abstract translation: 一种用于评估视频编码质量的方法和装置。 该方法包括：获取视频帧的切片的量化参数和视频流的视频帧的切片的每像素的数量; 根据视频流的视频帧的片的每像素的字节数量确定视频的内容的复杂度; 并根据视频内容的复杂度和视频的量化参数来预测视频编码质量。 在本发明中，在预测视频编码质量时也考虑到视频内容的复杂性。 因此，通过考虑视频内容的复杂度获得的模型预测的编码质量更好地满足人眼的主观感觉，从而提高预测的准确性。

公开(公告)号：US20150256822A1

公开(公告)日：2015-09-10

申请号：US14721610

申请日：2015-05-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Lina Sun

IPC: H04N17/00 ,  H04N5/38 ,  H04N5/14

CPC classification number: H04N17/004 ,  H04N5/145 ,  H04N5/38 ,  H04N19/00 ,  H04N19/89

Abstract: A method and an apparatus for assessing a video freeze distortion degree. The method includes acquiring a frame rate and a freeze feature parameter of a freeze event that are of a video stream, and the freeze event is used to represent a pause of the video stream; and acquiring a freeze event distortion value of the video stream according to the frame rate and the freeze feature parameter that are of the video stream, where the freeze event distortion value is used to represent a distortion degree of the video stream. The method and the apparatus for assessing a video freeze distortion degree in the embodiments of the present invention are more in line with subjective feelings of human, and improve accuracy of a distortion degree assessment.

Abstract translation: 一种用于评估视频冻结失真度的方法和装置。 该方法包括获取视频流的冻结事件的帧率和冻结特征参数，并且冻结事件用于表示视频流的暂停; 以及根据视频流的帧速率和冻结特征参数获取视频流的冻结事件失真值，其中使用冻结事件失真值来表示视频流的失真度。 用于评估本发明的实施例中的视频冻结失真度的方法和装置更符合人的主观感觉，并提高失真度评估的准确性。

公开(公告)号：US20150110204A1

公开(公告)日：2015-04-23

申请号：US14583478

申请日：2014-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lina Sun ,  Shan Gao ,  Qingpeng Xie

IPC: H04N17/02

CPC classification number: H04N17/02 ,  H04N17/004 ,  H04N19/102 ,  H04N19/14 ,  H04N19/146 ,  H04N19/159

Abstract: Embodiments of the present invention disclose a method and an apparatus for acquiring video coding compression quality. The method may include: acquiring video stream information; calculating video content complexity according to the video stream information; and calculating video coding compression quality according to the bit rate, the frame rate and the video content complexity. In the embodiments of the present invention, the video coding compression quality may be acquired as long as the video frame information, the bit rate, the frame rate and the video content complexity of a video stream are acquired. The video coding compression quality may be used in subsequent video quality assessment. This process greatly reduces video quality assessment complexity and the assessment may be performed in real time. In addition, the assessed coding compression quality meets the subjective feeling of human eyes better.

Abstract translation: 本发明的实施例公开了一种获取视频编码压缩质量的方法和装置。 该方法可以包括：获取视频流信息; 根据视频流信息计算视频内容复杂度; 并根据比特率，帧速率和视频内容复杂度来计算视频编码压缩质量。 在本发明的实施例中，只要获取视频帧的视频帧信息，比特率，帧速率和视频内容复杂度，就可以获取视频编码压缩质量。 视频编码压缩质量可用于随后的视频质量评估。 这个过程大大降低了视频质量评估的复杂性，并且可以实时地进行评估。 此外，评估的编码压缩质量更好地满足人眼的主观感觉。

公开(公告)号：US20140255007A1

公开(公告)日：2014-09-11

申请号：US14196997

申请日：2014-03-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bing Chen ,  Shan Gao

IPC: H04N9/87

CPC classification number: H04N9/87 ,  H04N5/76 ,  H04N21/2401 ,  H04N21/44004

Abstract: Embodiments of the present invention provide a buffer state estimation method and device. The method includes: obtaining a first continuous play duration corresponding to media data received by a terminal in a period of the present state estimation; calculating a second continuous play duration corresponding to media data in a current buffer according to a buffer state before the present state estimation and the first continuous play duration; and performing state estimation on the buffer according to the buffer state before the present state estimation, preset buffer configuration parameters and the second continuous play duration, and obtaining the present buffer state and start time and duration of the present buffer state, where the buffer state includes at least one of an initial buffering state, a normal play state, a rebuffering state, a play stop state and a play pause state.

Abstract translation: 本发明的实施例提供一种缓冲状态估计方法和装置。 该方法包括：在当前状态估计的周期内获得对应于由终端接收的媒体数据的第一连续播放持续时间; 根据当前状态估计和第一连续播放持续时间之前的缓冲状态，计算与当前缓冲器中的媒体数据相对应的第二连续播放持续时间; 以及根据当前状态估计之前的缓冲状态，预设缓冲器配置参数和第二连续播放持续时间对缓冲器执行状态估计，并获得当前缓冲状态的当前缓冲状态和当前缓冲状态的开始时间和持续时间，其中缓冲状态 包括初始缓冲状态，正常播放状态，重新接受状态，播放停止状态和播放暂停状态中的至少一个。