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公开(公告)号：EP3337165A1
公开(公告)日：2018-06-20
申请号：EP16840541.3
申请日：2016-03-03
申请人： Huawei Technologies Co., Ltd. , Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： REINHARDT, Michael , SCHREER, Oliver , FELDMANN, Ingo , GAO, Shan , YAO, Jun
IPC分类号： H04N7/15
CPC分类号： H04N7/144 , H04L65/403 , H04N7/15
摘要： Embodiments of the present invention provide a video communication method and system, applied to a scenario of video communication between a first location and a second location, and at least two users at the second location participate in the video communication. The method includes: determining a first user and a second user that are in a call or that are going to have a call with each other, where the first user is located at the first location, the second user is located at the second location, and the second user is any one of the at least two users; obtaining an eye-to-eye virtual view image of the first user; and displaying the eye-to-eye virtual view image of the first user on a display at the second location in a manner used for corresponding to the second user, so that the eye-to-eye virtual view image of the first user corresponds to the second user, where the manner used for corresponding to the second user is used to indicate that the first user and the second user are in a call or are going to have a call with each other. According to the embodiments of the present invention, multiple users at the second location can learn that the first user and the second user are in a call, thereby improving user experience.
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公开(公告)号：EP3849168A1
公开(公告)日：2021-07-14
申请号：EP19864611.9
申请日：2019-09-10
发明人： XIAO, Zhaolei , ZHOU, Jiantong , FANG, Yuntan , GAO, Shan , WU, Zhenhua , XIAO, Jing
IPC分类号： H04N5/225
摘要： 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. In this way, redundant background information can be reduced when the camera is moving.
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3.发明公开METHOD AND APPARATUS FOR EVALUATING QUALITY OF AUDIO STREAM 审中-公开VERFAHREN UND VORRICHTUNG ZUR BEWERTUNG DERQUALITÄTEINES AUDIOSTREAMS
公开(公告)号：EP2852099A1
公开(公告)日：2015-03-25
申请号：EP13830684.0
申请日：2013-08-08
发明人： GAO, Shan , SUN, Lina , YANG, Fuzheng
CPC分类号： G10L25/00 , G10L25/69 , H04L41/5067 , H04L41/509 , H04L43/0829
摘要： 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 a 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 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.
摘要翻译： 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非静音音频数据分组，其中将要被 - 经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非静音音频数据分组以产生音频质量评估信息。 用于评估本发明实施例提供的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。
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公开(公告)号：EP2830316A1
公开(公告)日：2015-01-28
申请号：EP12878144.0
申请日：2012-12-02
发明人： GAO, Shan , SUN, Lina , XIE, Qingpeng
IPC分类号： H04N17/00
CPC分类号： H04N17/004 , H04N17/02 , H04N19/89 , H04N21/23418 , H04N21/44008
摘要： The present invention is applicable to the communications field, and provides a method and an apparatus for evaluating media quality. The method includes: obtaining media reference quality and rebuffering event distortion quality; and determining final media quality 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. In the present invention, 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, and more consistent with subjective feelings of people.
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公开(公告)号：EP2790407A1
公开(公告)日：2014-10-15
申请号：EP12875390.2
申请日：2012-11-05
发明人： GAO, Shan , SUN, Lina , XIE, Qingpeng
CPC分类号： H04L43/0835 , H04N17/00 , H04N17/02
摘要： The present invention discloses a video quality assessment method. 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 according to the number of successively lost packets and a first packet threshold; 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. The present invention also discloses a video quality assessment apparatus.
摘要翻译： 本发明公开了一种视频质量评估方法。 该方法包括：获取视频数据的参数信息，该参数信息包括比特率，帧率和分组信息; 根据比特率或帧率进行计算，得到视频数据的基准视频质量; 根据分组信息计算连续丢失的分组数量，并根据连续丢失的分组数量和第一分组阈值计算有效丢包次数; 根据有效丢包次数进行计算，得到视频数据的视频丢包率和失真质量; 根据基准视频质量和视频丢包失真质量进行计算，得到最终的视频质量。 使用有效丢包次数可以更有效地准确评估视频并降低算法复杂度。 本发明还公开了一种视频质量评估装置。
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6.发明公开VIDEO DATA QUALITY ASSESSMENT METHOD AND DEVICE 有权VERFAHREN UND VORRICHTUNG ZURQUALITÄTSBEWERTUNGVON VIDEODATEN
公开(公告)号：EP2648415A1
公开(公告)日：2013-10-09
申请号：EP12770792.5
申请日：2012-03-30
发明人： SUN, Lina , GAO, Shan , XIE, Qingpeng
IPC分类号： H04N17/00
CPC分类号： H04N17/004 , H04N21/44008
摘要： A video data quality assessment method and apparatus are disclosed. The video data quality assessment method includes: acquiring a compression distortion parameter of video data; acquiring a frame impairment distortion parameter/video data rebuffering influence parameter; calculating a video quality parameter According to the compression distortion parameter and the frame impairment distortion parameter/video data rebuffering influence parameter, where the video quality parameter is a difference between the compression distortion parameter and the frame impairment distortion parameter/video data rebuffering influence parameter.
摘要翻译： 公开了一种视频数据质量评估方法和装置。 视频数据质量评估方法包括：获取视频数据的压缩失真参数; 获取帧损害失真参数/视频数据拒绝影响参数; 计算视频质量参数根据压缩失真参数和帧损害失真参数/视频数据重播影响参数，其中视频质量参数是压缩失真参数和帧损害失真参数/视频数据重制影响参数之间的差异。
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公开(公告)号：EP3741127A1
公开(公告)日：2020-11-25
申请号：EP18717747.2
申请日：2018-03-07
发明人： STEPIN, Victor Alexeevich , IKONIN, Sergey Yurievich , GAO, Shan , CHEN, Huanbang , YANG, Haitao , SHINGALA, Jay , SETHURAMAN, Sriram , CHERNYAK, Roman Igorevich
IPC分类号： H04N19/82 , H04N19/117 , H04N19/147 , H04N19/176
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公开(公告)号：EP3720131A1
公开(公告)日：2020-10-07
申请号：EP18888481.1
申请日：2018-12-12
发明人： CHEN, Huanbang , GAO, Shan , YANG, Haitao
IPC分类号： H04N19/52 , H04N19/105
摘要： This application provides a video data inter prediction method and apparatus, to reduce bit overheads of video transmission. The method 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, and a plurality of pieces of index information used to index the first candidate motion information group and the 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.
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公开(公告)号：EP3282698A1
公开(公告)日：2018-02-14
申请号：EP16785751.5
申请日：2016-03-03
发明人： GAO, Shan , YANG, Fuzheng , XU, Ziqiang
CPC分类号： H04L43/0829 , H04L65/60 , H04L65/80 , H04N17/004
摘要： The present invention relates to the field of digital signal processing technologies, and discloses a video data quality estimation method and apparatus. 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. According to the present invention, quality estimation can be performed on video data in an application scenario in which a specific video stream is unavailable.
摘要翻译： 数字信号处理技术领域本发明涉及数字信号处理技术领域，并且公开了一种视频数据质量估计方法和装置。 所述视频数据质量估计方法包括：获取用于获取所述视频的视频质量的参数，所述用于获取所述视频的视频质量的参数包括所述视频的内容复杂度因子，平均视频帧损伤率 视频的序列减损率或视频的丢包事件频率; 以及根据用于获得视频的视频质量的参数来获得视频的质量。 根据本发明，可以在特定视频流不可用的应用场景中对视频数据执行质量估计。
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公开(公告)号：EP3203733A1
公开(公告)日：2017-08-09
申请号：EP16193850.1
申请日：2013-08-19
发明人： GAO, Shan , ZHANG, Lei , SUN, Lina
IPC分类号： H04N17/00 , H04N21/44 , H04L12/26 , H04N19/105 , H04N19/172 , H04N19/115 , H04N19/61 , H04N19/103 , H04N19/89 , H04N19/85 , H04N21/6437
CPC分类号： H04N19/89 , H04L43/0835 , H04N17/004 , H04N19/103 , H04N19/115 , H04N19/61 , H04N19/85 , H04N21/44008 , H04N21/6437
摘要： 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, where the current video frame is located after the first video frame of the video stream; obtaining a change feature value of the current video frame according to the current video frame and a size of a previous first video frame adjacent to the current video frame; obtaining an I-frame threshold of the current video frame according to a video frame rate and a location 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, and therefore only one video frame before a previous first video frame is considered during detection of a frame type of the previous first video frame; in addition, impact of a video frame rate is fully considered.
摘要翻译： 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。 所述视频帧类型检测方法包括：获取所述当前视频帧位于所述视频流的第一视频帧之后的当前视频帧的大小; 根据当前视频帧和与当前视频帧相邻的前一个第一视频帧的大小，获取当前视频帧的变化特征值; 根据视频帧率和当前视频帧的位置，获取当前视频帧的I帧阈值; 根据当前视频帧的变化特征值和前一个第一视频帧的变化特征值，当前视频帧的I帧阈值以及当前视频帧的大小，确定前一个第一视频帧是否为I帧。 当前视频帧，前一个第一视频帧的大小以及前一个第二视频帧的大小。 本发明提供了一种完整有效的帧类型检测方法，因此在检测前一个第一视频帧的帧类型时，只考虑前一个第一视频帧之前的一个视频帧; 另外，充分考虑了视频帧率的影响。
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