公开(公告)号：US20160301926A1

公开(公告)日：2016-10-13

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 ,  H04N21/24 ,  H04N19/154

CPC classification number: H04N17/004 ,  H04N19/154 ,  H04N21/2402

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：US20150003530A1

公开(公告)日：2015-01-01

申请号：US14469953

申请日：2014-08-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Shan GAO ,  Lei ZHANG ,  Lina SUN

IPC: H04N19/89 ,  H04N19/172 ,  H04N19/105

CPC classification number: H04N19/89 ,  H04L43/0835 ,  H04N17/004 ,  H04N19/103 ,  H04N19/115 ,  H04N19/61 ,  H04N19/85 ,  H04N21/44008 ,  H04N21/6437

Abstract: Embodiments of the present invention provide frame type detection and frame size detection methods and apparatuses for a video stream. The video frame type detection method includes: obtaining a size of a current video frame; obtaining a change feature value of the current video frame; obtaining an I-frame threshold of the current video frame; and determining whether the previous first video frame is an I frame according to the change feature value of the current video frame and a change feature value of the previous first video frame, the I-frame threshold of the current video frame, and the size of the current video frame, the size of the previous first video frame, and a size of a previous second video frame. The present invention provides a complete and effective frame type detection method; in addition, impact of a video frame rate is fully considered.

Abstract translation: 本发明的实施例提供了用于视频流的帧类型检测和帧大小检测方法和装置。 视频帧类型检测方法包括：获得当前视频帧的大小; 获取当前视频帧的改变特征值; 获得当前视频帧的I帧阈值; 以及根据当前视频帧的变化特征值和前一个第一视频帧的改变特征值，当前视频帧的I帧阈值以及当前视频帧的I帧阈值来确定先前的第一视频帧是否是I帧 当前视频帧，先前第一视频帧的大小，以及之前的第二视频帧的大小。 本发明提供一种完整且有效的帧类型检测方法; 另外，视频帧速率的影响也被充分考虑。

公开(公告)号：US20150097971A1

公开(公告)日：2015-04-09

申请号：US14570992

申请日：2014-12-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan GAO ,  Lina SUN ,  Qingpeng XIE

IPC: H04N17/00

CPC classification number: H04N17/004 ,  H04N19/154 ,  H04N21/2402

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.

Abstract translation: 本发明的实施例提供一种多媒体质量监测方法和装置。 该方法包括：根据多媒体的参考视频质量和参考音频质量确定多媒体的参考质量; 获取在出现/发生多媒体视频失真和/或音频失真之后的多媒体失真质量; 并根据多媒体的参考质量和多媒体失真质量确定多媒体的质量。 因此，提高了多媒体质量监控结果的准确性。

公开(公告)号：US20150071363A1

公开(公告)日：2015-03-12

申请号：US14539423

申请日：2014-11-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lina SUN ,  Shan GAO ,  Fuzheng YANG

IPC: H04N19/85 ,  H04N19/124

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

Abstract: Embodiments of the present invention provide a method and an apparatus for assessing video quality. The method includes: determining an actual quantization parameter and a critical quantization parameter of the target video according to a target video, where the critical quantization parameter is a maximum quantization parameter of the target video in a case in which a distortion is not evidently identifiable by human eyes; and determining quality of the target video according to the actual quantization parameter and the critical quantization parameter. According to the method and apparatus of the present invention, a critical quantization parameter of a target video is determined, and the actual quantization parameter is compared with the critical quantization parameter, which can accurately determine whether subjective quality of the target video changes strictly monotonically relative to the used actual quantization parameter, so that the video quality can be assessed accurately.

Abstract translation: 本发明的实施例提供了一种用于评估视频质量的方法和装置。 该方法包括：根据目标视频确定目标视频的实际量化参数和关键量化参数，其中临界量化参数是目标视频的最大量化参数，在失真不能被明显识别的情况下 人眼 以及根据实际量化参数和临界量化参数确定目标视频的质量。 根据本发明的方法和装置，确定目标视频的临界量化参数，并将实际的量化参数与临界量化参数进行比较，这可以准确地确定目标视频的主观质量是否严格单调变化 到使用的实际量化参数，使得可以准确地评估视频质量。

公开(公告)号：US20150035996A1

公开(公告)日：2015-02-05

申请号：US14518164

申请日：2014-10-20

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Shan GAO ,  Lina SUN ,  Qingpeng XIE

IPC: H04N17/00 ,  H04N21/234 ,  H04N7/64 ,  H04N17/02 ,  H04N21/44

CPC classification number: H04N17/004 ,  H04N17/02 ,  H04N19/89 ,  H04N21/23418 ,  H04N21/44008

Abstract: In a method for evaluating media quality, media reference quality and rebuffering event distortion quality are obtained, final media quality are determined according to the obtained media reference quality and rebuffering event distortion quality, where a parameter of the rebuffering event distortion quality includes at least one of the following: the number of rebuffering events, a duration of the rebuffering event, a multiple rebuffering event interaction impact parameter, initial media quality, and a factor describing media content complexity. When media quality is calculated, impact of the multiple rebuffering event interaction impact parameter, the initial media quality, and the factor describing media content complexity on the media quality is considered, thereby making a media quality evaluation result more accurate.

Abstract translation: 在评估媒体质量的方法中，获得媒体参考质量和回退事件失真质量，根据所获得的媒体参考质量和再生事件失真质量来确定最终媒体质量，其中，回退事件失真质量的参数包括至少一个 以下内容：重新绑定事件的数量，重新绑定事件的持续时间，多重缓冲事件交互影响参数，初始媒体质量以及描述媒体内容复杂性的因素。 当媒体质量得到计算时，考虑到多重回滚事件交互影响参数的影响，初始媒体质量以及描述媒体内容对媒体质量复杂度的因素，从而使媒体质量评估结果更准确。

公开(公告)号：US20150009406A1

公开(公告)日：2015-01-08

申请号：US14492508

申请日：2014-09-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lina SUN ,  Shan GAO ,  Qingpeng XIE

IPC: H04L29/06 ,  H04N9/64

CPC classification number: H04L65/80 ,  H04N9/64 ,  H04N17/004

Abstract: The present invention discloses a method and an apparatus for evaluating multimedia quality. The method includes: obtaining reference quality of a video and final quality of the video of a multimedia sequence, and reference quality of an audio and final quality of the audio of the multimedia sequence; determining reference quality of the multimedia sequence; determining a distortion value of the multimedia sequence according to the reference quality of the video, the final quality of the video, the reference quality of the audio, and the final quality of the audio; and determining multimedia quality of the multimedia sequence according to the reference quality of the multimedia sequence and the distortion value of the multimedia sequence. The method and apparatus for evaluating multimedia quality can directly reflect distortion of a multimedia sequence, accord with a subjective feeling of a person, and therefore can accurately and effectively evaluate the multimedia quality.

Abstract translation: 本发明公开了一种评估多媒体质量的方法和装置。 该方法包括：获得视频的参考质量和多媒体序列的视频的最终质量，以及多媒体序列的音频的音频和最终质量的参考质量; 确定多媒体序列的参考质量; 根据视频的参考质量，视频的最终质量，音频的参考质量以及音频的最终质量确定多媒体序列的失真值; 以及根据多媒体序列的参考质量和多媒体序列的失真值确定多媒体序列的多媒体质量。 用于评估多媒体质量的方法和装置可以直接反映多媒体序列的失真，符合人的主观感觉，因此可以准确有效地评估多媒体质量。