公开(公告)号：US10110893B2

公开(公告)日：2018-10-23

申请号：US14343047

申请日：2011-09-09

申请人： Xiao Dong Gu ,  Fan Zhang ,  Zhibo Chen

发明人： Xiao Dong Gu ,  Fan Zhang ,  Zhibo Chen

IPC分类号： H04N19/00 ,  H04N19/86 ,  H04N19/154

摘要： In video quality control and estimation, the joint evaluation of compression artifacts and channel artifacts is a problem. The invention considers the joint perception of both a compression artifact level Dm(V) and a channel artifact level Dh(V) in a method for calculating overall distortion in a video being affected by compression artifacts and channel artifacts. The method comprises a step of adding a compression artifact level Dm(V) and a summand S that is derived from log (Dh(V)) multiplied with a factor that decreases with increasing compression artifact level Dm, such as D(V)=Dm(V)+c·(K−Dm(V))·log(Dh(V)). The result obtained is a measure for the overall distortion.

公开(公告)号：US20110206356A1

公开(公告)日：2011-08-25

申请号：US12450873

申请日：2007-04-20

申请人： Qu Qing Chen ,  Zhibo Chen ,  Xiao Dong Gu

发明人： Qu Qing Chen ,  Zhibo Chen ,  Xiao Dong Gu

IPC分类号： H04N5/917 ,  H04N7/26

CPC分类号： G06F17/30858 ,  H04N19/00 ,  H04N19/70 ,  H04N21/23892 ,  H04N21/44008 ,  H04N21/84 ,  H04N21/8451

摘要： The invention concerns a method for embedding video annotation data into a coded video stream. The method comprises the step of—encapsulating said video annotation data into a unit, so-called video annotation unit, of the coded video data stream which format corresponds to at least one format used for sending the associated video data,—inserting an identifiable synchronizing code enabling the identification of said video annotation unit into the video data stream.

摘要翻译： 本发明涉及一种将视频注释数据嵌入到编码视频流中的方法。 所述方法包括以下步骤：将所述视频注释数据封装成编码视频数据流的单位即所谓的视频注释单元，该格式对应于用于发送相关视频数据的至少一种格式， - 插入可识别的同步 能够将所述视频注释单元识别为视频数据流的代码。

公开(公告)号：US20140219364A1

公开(公告)日：2014-08-07

申请号：US14343047

申请日：2011-09-09

申请人： Xiao Dong Gu ,  Fan Zhang ,  Zhibo Chen

发明人： Xiao Dong Gu ,  Fan Zhang ,  Zhibo Chen

IPC分类号： H04N19/86

CPC分类号： H04N19/154

摘要： In video quality control and estimation, the joint evaluation of compression artifacts and channel artifacts is a problem. The invention considers the joint perception of both a compression artifact level Dm(V) and a channel artifact level Dh(V) in a method for calculating overall distortion in a video being affected by compression artifacts and channel artifacts. The method comprises a step of adding a compression artifact level Dm(V) and a summand S that is derived from log (Dh(V)) multiplied with a factor that decreases with increasing compression artifact level Dm, such as D(V)=Dm(V)+c·(K−Dm(V))·log(Dh(V)). The result obtained is a measure for the overall distortion.

摘要翻译： 在视频质量控制和估计中，压缩伪像和通道伪像的联合评估是一个问题。 本发明考虑了在用于计算受压缩伪影和通道伪像影响的视频中的总体失真的方法中的压缩伪像级别Dm（V）和通道伪影级别Dh（V）的联合感知。 该方法包括以下步骤：添加压缩伪像级Dm（V）和从log（Dh（V））导出的加法乘积S乘以随着压缩伪影等级Dm增加而减小的因子，例如D（V）= Dm（V）+ c·（K-Dm（V））·log（Dh（V））。 获得的结果是整体失真的度量。

公开(公告)号：US20150304709A1

公开(公告)日：2015-10-22

申请号：US14443841

申请日：2012-11-30

申请人： Qian ZHANG ,  Ning LIAO ,  Fan ZHANG ,  Zhibo CHEN

发明人： Qian Zhang ,  Ning Liao ,  Fan Zhang ,  Zhibo Chen

IPC分类号： H04N21/44 ,  H04N21/61 ,  H04N21/647 ,  H04N21/643 ,  H04N21/442 ,  H04N21/234

CPC分类号： H04N21/44008 ,  H04N21/23418 ,  H04N21/44209 ,  H04N21/4425 ,  H04N21/6125 ,  H04N21/64322 ,  H04N21/6473 ,  H04N21/64738 ,  H04N21/64769

摘要： A method and apparatus are disclosed for predicting subjective quality of a video contained in a bit stream on a packet layer. Header information of the bit-stream is parsed and frame layer information, such as frame type, is estimated. Visible artifact levels are then estimated based on frame layer information. An overall artifact level and quality metric are estimated based on artifact levels for individual frames with other parameters. Specifically, different weighting factors are used for different frame types when estimating the levels of initial visible artifacts and propagated visible artifacts. The number of slices per frame is used as a parameter when estimating the overall artifact level for the video. Moreover, the quality assessment model considers quality loss caused by both coding and channel artifacts.

摘要翻译： 公开了一种用于预测分组层中的比特流中包含的视频的主观质量的方法和装置。 解析比特流的报头信息，并估计帧类信息，如帧类型。 然后基于帧层信息来估计可见的伪像级别。 基于具有其他参数的单个帧的伪像级别来估计整体神器级别和质量度量。 具体来说，当估计初始可见伪像和传播的可见伪像的水平时，不同的加权因子被用于不同的帧类型。 当估计视频的整体神器级别时，每帧的片数被用作参数。 此外，质量评估模型考虑了由编码和通道伪影引起的质量损失。

公开(公告)号：US09288071B2

公开(公告)日：2016-03-15

申请号：US13695058

申请日：2010-04-30

申请人： Ning Liao ,  Zhibo Chen ,  Xianlei Wang

发明人： Ning Liao ,  Zhibo Chen ,  Xianlei Wang

IPC分类号： H04L12/725 ,  H04L12/24 ,  H04N17/00 ,  H04N21/435 ,  H04N21/6437 ,  H04L29/06 ,  H04N19/46 ,  H04N19/196 ,  H04N19/61 ,  H04N19/154 ,  H04N19/86 ,  H04N19/895

CPC分类号： H04L12/24 ,  H04L41/00 ,  H04L65/4076 ,  H04L65/80 ,  H04N17/004 ,  H04N19/154 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61 ,  H04N19/86 ,  H04N19/895 ,  H04N21/435 ,  H04N21/6437

摘要： Objective video quality assessment models at media-layer or at packet-layer are known for estimating audio/video quality of experience. Existing models are not able to provide stable performance. A method for enabling quality assessment of a stream of frames of video data comprises receiving a sequence of packets, generating a set of parameters and inserting said generated set of parameters as side information into said stream of frames, wherein at least one parameter refers to a video slice level. A method for assessing the quality of a stream of frames of video data comprises receiving a sequence of packets, extracting a set of parameters from said sequence of packets and generating an estimated mean opinion score, wherein the video data comprise a slice level and wherein the extracted set of parameters comprises at least one parameter that refers to a video slice level.

摘要翻译： 用于估计音频/视频体验质量的媒体层或分组层的目标视频质量评估模型是已知的。 现有型号不能提供稳定的性能。 一种用于实现视频数据帧流的质量评估的方法包括接收分组序列，产生一组参数，并将所述生成的参数集合作为辅助信息插入所述帧流中，其中至少一个参数是指 视频切片级别。 一种用于评估视频数据帧流的质量的方法包括接收分组序列，从所述分组序列中提取一组参数并生成估计的平均意见分数，其中所述视频数据包括切片级别，其中， 提取的参数集合包括参考视频片段级别的至少一个参数。

公开(公告)号：US20150373324A1

公开(公告)日：2015-12-24

申请号：US14763940

申请日：2013-06-09

申请人： Ning LIAO ,  Zhibo CHEN ,  Fan ZHANG ,  THOMSON LICENSING

发明人： Ning Liao ,  Zhibo Chen ,  Fan Zhang

IPC分类号： H04N17/00 ,  H04N19/114 ,  G06T7/00 ,  G06K9/03 ,  G06K9/00 ,  H04N19/103 ,  H04N19/154

CPC分类号： H04N17/004 ,  G06K9/00536 ,  G06K9/00711 ,  G06K9/036 ,  G06T7/0002 ,  G06T2207/10016 ,  H04N19/103 ,  H04N19/114 ,  H04N19/154 ,  H04N19/48 ,  H04N19/89

摘要： Spatial distortion (i.e., when a frame is viewed independently of other frames in a video sequence) may be quite different from temporal distortion (i.e., when frames are viewed continuously). To estimate temporal distortion, a sliding window approach is used. Specifically, multiple sliding windows around a current frame are considered. Within each sliding window, a large distortion density is calculated and a sliding window with the highest large distortion density is selected. A distance between the current frame and the closest frame with large distortion in the selected window is calculated. Subsequently, the temporal distortion is estimated as a function of the highest large distortion ratio, the spatial distortion for the current frame, and the distance. In another embodiment, a median of spatial distortion values is calculated for each sliding window and the maximum of median spatial distortion values is used to estimate the temporal distortion.

摘要翻译： 空间失真（即，当视频序列中独立于其他帧观看帧）可能与时间失真（即，连续观看帧时）完全不同。 为了估计时间失真，使用滑动窗口方法。 具体地说，考虑当前帧周围的多个滑动窗口。 在每个滑动窗口内，计算出较大的失真密度，并选择具有最大大失真密度的滑动窗口。 计算当前帧与所选窗口中具有大失真的最近帧之间的距离。 随后，将时间失真估计为最大的大失真比，当前帧的空间失真和距离的函数。 在另一个实施例中，为每个滑动窗口计算空间失真值的中值，并且使用中值空间失真值的最大值来估计时间失真。

公开(公告)号：US20130044224A1

公开(公告)日：2013-02-21

申请号：US13695058

申请日：2010-04-30

申请人： Ning Liao ,  Zhibo Chen ,  Xianlel Wang

发明人： Ning Liao ,  Zhibo Chen ,  Xianlel Wang

IPC分类号： H04N17/00

CPC分类号： H04L12/24 ,  H04L41/00 ,  H04L65/4076 ,  H04L65/80 ,  H04N17/004 ,  H04N19/154 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61 ,  H04N19/86 ,  H04N19/895 ,  H04N21/435 ,  H04N21/6437

摘要： Objective video quality assessment models at media-layer or at packet-layer are known for estimating audio/video quality of experience. Existing models are not able to provide stable performance. A method for enabling quality assessment of a stream of frames of video data comprises receiving a sequence of packets, generating a set of parameters and inserting said generated set of parameters as side information into said stream of frames, wherein at least one parameter refers to a video slice level. A method for assessing the quality of a stream of frames of video data comprises receiving a sequence of packets, extracting a set of parameters from said sequence of packets and generating an estimated mean opinion score, wherein the video data comprise a slice level and wherein the extracted set of parameters comprises at least one parameter that refers to a video slice level.

摘要翻译： 用于估计音频/视频体验质量的媒体层或分组层的目标视频质量评估模型是已知的。 现有型号不能提供稳定的性能。 一种用于实现视频数据帧流的质量评估的方法包括接收分组序列，产生一组参数，并将所述生成的参数集合作为辅助信息插入所述帧流中，其中至少一个参数是指 视频切片级别。 一种用于评估视频数据帧流的质量的方法包括接收分组序列，从所述分组序列中提取一组参数并生成估计的平均意见分数，其中所述视频数据包括切片级别，其中， 提取的参数集合包括参考视频片段级别的至少一个参数。

公开(公告)号：US09323997B2

公开(公告)日：2016-04-26

申请号：US14358304

申请日：2011-11-28

申请人： Xiaodong Gu ,  Kai Xie ,  Zhibo Chen

发明人： Xiaodong Gu ,  Kai Xie ,  Zhibo Chen

IPC分类号： G06K9/03 ,  H04N17/00

CPC分类号： G06K9/036 ,  H04N17/004

摘要： Various implementations address distortion and quality measurements related to, for example, freeze-with-skip and/or a freeze-without-skip events. In several implementations, information is accessed indicating that a first and second set of one or more consecutive pictures are not to be displayed. A first and second indicator are determined. In one such implementation, the first and second indicators indicate an amount of distortion across one or more types of distortive effects that result from displaying substantially a first, or second, same picture during a display time for the first, or second, set of pictures. The first and second indicators are combined in a non-linear manner. In another such implementation, the distortion is associated with a given type of distortive effect, from among multiple types of distortive effects, and the first and second indicators are combined for the given type of distortive effect.

摘要翻译： 各种实施方案涉及与例如冻结跳过和/或冻结无跳跃事件相关的失真和质量测量。 在几个实现中，访问指示不显示第一和第二组一个或多个连续图片的信息。 确定第一和第二指示符。 在一个这样的实施方案中，第一和第二指示符指示在一个或多个类型的失真效应的失真量，这是由在第一或第二组图像的显示时间期间显示基本上第一或第二相同图像而导致的 。 第一和第二指标以非线性方式组合。 在另一个这样的实现中，失真与多种类型的失真效应中的给定类型的失真效应相关联，并且对于给定类型的失真效应组合第一和第二指示符。

公开(公告)号：US09672636B2

公开(公告)日：2017-06-06

申请号：US14358289

申请日：2012-04-23

申请人： Fan Zhang ,  Kai Xie ,  Wenfei Jiang ,  Zhibo Chen

发明人： Fan Zhang ,  Kai Xie ,  Wenfei Jiang ,  Zhibo Chen

IPC分类号： G06T7/40 ,  G06T7/00 ,  H04N19/154 ,  H04N19/172 ,  H04N19/117 ,  H04N19/14 ,  H04N19/86 ,  G06T7/13 ,  G06T7/44 ,  H04N19/162

CPC分类号： G06T7/40 ,  G06T7/0002 ,  G06T7/13 ,  G06T7/44 ,  G06T2207/10016 ,  G06T2207/20028 ,  G06T2207/30168 ,  H04N19/117 ,  H04N19/14 ,  H04N19/154 ,  H04N19/162 ,  H04N19/172 ,  H04N19/865

摘要： A particular implementation decomposes an image into a structure component and a texture component. An edge strength map is calculated for the structure component, and a texture strength map is calculated for the texture component. Using the edge strength and the texture strength, texture masking weights are calculated. The stronger the texture strength is, or the weaker the edge strength is, the more distortion can be tolerated by human eyes, and thus, the smaller the texture masking weight is. The local distortions are then weighted by the texture masking weights to generate an overall distortion level or an overall quality metric.

公开(公告)号：US09532056B2

公开(公告)日：2016-12-27

申请号：US14233519

申请日：2011-07-18

申请人： Wenfei Jiang ,  Kangying Cai ,  Zhibo Chen

发明人： Wenfei Jiang ,  Kangying Cai ,  Zhibo Chen

IPC分类号： H04N7/12 ,  H03M5/00 ,  H04N19/96 ,  G06T9/40 ,  G06T9/00 ,  H04N19/44 ,  H03M7/30 ,  H03M7/40

CPC分类号： H04N19/96 ,  G06T9/00 ,  G06T9/001 ,  G06T9/005 ,  G06T9/40 ,  H03M7/40 ,  H03M7/4056 ,  H03M7/6088 ,  H03M7/6094 ,  H04N19/44

摘要： In 3D mesh coding, the geometry data is compressed by spatial tree based approaches. Bitstreams that result from the traversal of a tree structure of spatial tree based approaches for encoding 3D mesh models have systematically special redundancies, which is exploited for further improving the mesh model compression. A method for encoding a bitstream comprises steps of defining at least a first and a second symbol group of binary symbols, with S1 being a subset of S2, determining within the bitstream first portions, second portions and third portions, wherein first portions have Th1 or more consecutive S1 symbols and second portions have Th2 or more consecutive S2 symbols, encoding the bitstream, wherein first portions, second portions and third portions are encoded using different codes, and encoding values indicating the boundary positions between the first, second and third portions in the bitstream.

摘要翻译： 在3D网格编码中，几何数据通过基于空间树的方法进行压缩。 通过遍历基于空间树的基于空间树的编码3D网格模型的方法产生的位流具有系统的特殊冗余，被用于进一步改进网格模型压缩。 一种用于编码比特流的方法包括以下步骤：定义二进制符号的至少第一和第二符号组，其中S1是S2的子集，在比特流第一部分，第二部分和第三部分内确定其中第一部分具有Th1或 更连续的S1符号和第二部分具有Th2个或更多个连续的S2符号，对比特流进行编码，其中使用不同的代码对第一部分，第二部分和第三部分进行编码，并且编码指示第一，第二和第三部分之间的边界位置的值 比特流。