公开(公告)号：US11528503B2

公开(公告)日：2022-12-13

申请号：US16915678

申请日：2020-06-29

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：US20200213616A1

公开(公告)日：2020-07-02

申请号：US16815914

申请日：2020-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Huanbang Chen ,  Haitao Yang ,  Jiantong Zhou ,  Shan Liu ,  Sriram Sethuraman ,  Jay Shingala ,  Jeeva Raj A. ,  Sagar Kotecha

IPC: H04N19/56 ,  H04N19/523 ,  H04N19/176

Abstract: An image prediction method and apparatus includes obtaining predicted motion information of an image block; determining an initial predicted block of the image block according to the predicted motion information and a reference image of the image block; performing, according to the predicted motion information, L iterative searches in the reference image using an integer pixel step size to obtain an intermediate predicted block of the image block; performing a single search in the reference image using a fractional pixel step size to obtain M predicted blocks of the image block; determining a target predicted block of the image block according to the M predicted blocks and the intermediate predicted block; and obtaining a predicted value of a pixel value of the image block according to a pixel value of the target predicted block.

公开(公告)号：US20200059650A1

公开(公告)日：2020-02-20

申请号：US16662627

申请日：2019-10-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaomu Lu ,  Shan Gao ,  Haitao Yang

IPC: H04N19/14 ,  H04N19/593 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182

Abstract: An image prediction method and a related product, where the image prediction method includes performing intra-frame prediction on a current block using a reference block to obtain an initial predicted pixel value of a pixel in the current block, and performing weighted filtering on the initial predicted pixel value of the pixel in the current block to obtain a predicted pixel value of the pixel in the current block. Weighting coefficients used for the weighted filtering include a horizontal weighting coefficient and a vertical weighting coefficient, and a first attenuation rate factor acting on the horizontal weighting coefficient is different from a second attenuation rate factor acting on the vertical weighting coefficient.

公开(公告)号：US10530675B2

公开(公告)日：2020-01-07

申请号：US15796035

申请日：2017-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Fuzheng Yang ,  Ziqiang Xu

IPC: H04L12/26 ,  H04L29/06 ,  H04N17/00

Abstract: A video data quality estimation method and apparatus are provided. The video data quality estimation method includes: obtaining a parameter used to obtain video quality of the video, where the parameter used to obtain video quality of the video includes at least one of a content complexity factor of the video, an average video frame impairment rate of the video, a sequence impairment rate of the video, or a packet-loss event frequency of the video; and obtaining quality of the video according to the parameter used to obtain video quality of the video.

公开(公告)号：US10116929B2

公开(公告)日：2018-10-30

申请号：US15188611

申请日：2016-06-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Lina Sun ,  Qingpeng Xie

IPC: H04N17/00 ,  H04N19/154 ,  H04N21/24

Abstract: Embodiments of the present invention provide a multimedia quality monitoring method, and a device. The method includes: determining reference quality of multimedia according to reference video quality and reference audio quality of the multimedia; acquiring multimedia distortion quality that is after video distortion and/or audio distortion of the multimedia occur/occurs; and determining quality of the multimedia according to the reference quality of the multimedia and the multimedia distortion quality. Therefore, accuracy of a multimedia quality monitoring result is improved.

公开(公告)号：US20160366617A1

公开(公告)日：2016-12-15

申请号：US15248603

申请日：2016-08-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bing Chen ,  Shan Gao

IPC: H04W28/14 ,  H04L12/26 ,  H04W28/02

CPC classification number: H04W28/14 ,  H04L29/08 ,  H04L43/16 ,  H04L47/30 ,  H04L49/355 ,  H04L65/4084 ,  H04L65/608 ,  H04L65/80 ,  H04L69/16 ,  H04N21/44004 ,  H04N21/6125 ,  H04N21/6587 ,  H04W28/0278

Abstract: A Hypertext Transfer Protocol (HTTP)-based buffer status updating method, device and a buffer status processor are provided, where the method includes, receiving an HTTP request from a terminal, triggering a buffer event according to the HTTP request, where the buffer event includes seek, pause, resume, and stream switch, and the method further includes updating a buffer status according to the buffer event, where the buffer status includes a normal play state, a play paused state, a re-buffering state, and a stream switch state. Hence, the buffer status is updated based on the buffer event in a manner of analyzing only an HTTP Protocol field such that a buffer model is closer to a real client buffer situation.

Abstract translation: 提供了基于超文本传输​​协议（HTTP）的缓冲器状态更新方法，设备和缓冲状态处理器，其中该方法包括：从终端接收HTTP请求，根据HTTP请求触发缓冲事件，其中缓冲区事件 包括寻道，暂停，恢复和流切换，并且该方法还包括根据缓冲器事件来更新缓冲器状态，其中缓冲器状态包括正常播放状态，播放暂停状态，重新缓冲状态和流 开关状态。 因此，以仅分析HTTP协议字段的方式基于缓冲器事件来更新缓冲器状态，使得缓冲器模型更接近于真正的客户端缓冲器情况。

公开(公告)号：US20150189138A1

公开(公告)日：2015-07-02

申请号：US14574002

申请日：2014-12-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qingpeng Xie ,  Lei Zhang ,  Shanfu Li ,  Jun Yao ,  Shan Gao

IPC: H04N5/225 ,  H04N5/232

CPC classification number: H04N5/2256 ,  H04N5/23222 ,  H04N5/23293 ,  H04N5/2354 ,  H04N5/2355 ,  H04N5/2356

Abstract: Embodiments of the present invention disclose a shooting method, an apparatus, and a terminal. The method includes: after it is detected that a camera is started, instructing a display screen facing a shooting person to display a preview image; obtaining a preset lighting parameter; controlling a display screen facing a shot target to provide lighting by using the preset lighting parameter; and shooting an image according to a shooting instruction. In the embodiments of the present invention, a display screen may be used as an auxiliary light source, and the display screen is controlled to provide lighting by using a preset lighting parameter, so that the quality of an image shot by a camera in a low light condition is improved.

Abstract translation: 本发明的实施例公开了一种拍摄方法，装置和终端。 该方法包括：在检测到摄像机开始之后，指示面向拍摄人物的显示屏幕显示预览图像; 获得预设的照明参数; 控制面向射击目标的显示屏幕，通过使用预设的照明参数来提供照明; 并根据拍摄说明拍摄图像。 在本发明的实施例中，显示屏可以用作辅助光源，并且通过使用预设的照明参数来控制显示屏以提供照明，使得由相机拍摄的图像的质量低 光条件得到改善。

公开(公告)号：US20150117653A1

公开(公告)日：2015-04-30

申请号：US14586052

申请日：2014-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Lina Sun ,  Fuzheng Yang

IPC: G10L25/00

CPC classification number: G10L25/00 ,  G10L25/69 ,  H04L41/5067 ,  H04L41/509 ,  H04L43/0829

Abstract: Embodiments of the present invention provide a method and an apparatus for evaluating audio stream quality, where the method for evaluating audio stream quality includes: determining at least one non-silence audio data packet in a to-be-evaluated audio stream, where the to-be-evaluated audio stream includes at least one non-silence audio data packet, and each non-silence audio data packet includes at least one non-silence audio frame; and evaluating the at least one non-silence audio data packet in the to-be-evaluated audio stream to generate audio quality evaluation information. The method and the apparatus for evaluating audio stream quality provided by the embodiments of the present invention can avoid impact of a silence part on evaluation of audio quality, thereby improving accuracy of evaluating audio stream quality.

Abstract translation: 本发明的实施例提供了一种用于评估音频流质量的方法和装置，其中用于评估音频流质量的方法包括：确定待评估音频流中的至少一个非静音音频数据分组，其中， 被评估的音频流包括至少一个非静音音频数据分组，并且每个非静音音频数据分组包括至少一个非静音音频帧; 以及评估待评估音频流中的至少一个非静音音频数据分组以产生音频质量评估信息。 由本发明的实施例提供的用于评估音频流质量的方法和装置可以避免静音部分对音频质量评估的影响，从而提高评估音频流质量的准确性。

公开(公告)号：US20140328198A1

公开(公告)日：2014-11-06

申请号：US14331611

申请日：2014-07-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Lina Sun ,  Qingpeng Xie

IPC: H04L12/26 ,  H04N17/00

CPC classification number: H04L43/0835 ,  H04N17/00 ,  H04N17/02

Abstract: A video quality assessment method and a video quality assessment apparatus are provided. The method includes: acquiring parameter information of video data, where the parameter information includes a bit rate, a frame rate, and packet information; performing calculation according to the bit rate or the frame rate to obtain benchmark video quality of the video data; calculating the number of successively lost packets according to the packet information, and calculating the number of effective packet loss times; performing calculation according to the number of effective packet loss times to obtain video packet loss and distortion quality of the video data; and performing calculation according to the benchmark video quality and the video packet loss and distortion quality to obtain final video quality. Using the number of effective packet loss times can accurately assess videos more effectively and reduce algorithm complexity.

Abstract translation: 提供视频质量评估方法和视频质量评估装置。 该方法包括：获取视频数据的参数信息，其中参数信息包括比特率，帧速率和分组信息; 根据比特率或帧速率进行计算，以获得视频数据的基准视频质量; 根据分组信息计算连续丢失分组数，计算有效分组丢失次数; 根据有效分组丢失次数进行计算，获得视频数据丢失和视频数据的失真质量; 并根据基准视频质量和视频分组丢失和失真质量进行计算，以获得最终的视频质量。 使用有效数据包丢失次数可以更有效地准确评估视频，降低算法复杂度。

公开(公告)号：US20240267553A1

公开(公告)日：2024-08-08

申请号：US18538941

申请日：2023-12-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

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.