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    • 13. 发明授权
    • Watermark detection using a propagation map
    • 使用传播图的水印检测
    • US09105091B2
    • 2015-08-11
    • US13577619
    • 2011-02-07
    • Shan HeDekun ZouJeffrey Adam Bloom
    • Shan HeDekun ZouJeffrey Adam Bloom
    • G06T1/00H04N21/8358H04N21/845
    • G06T1/0064H04N21/8358H04N21/8455
    • A method for detecting and selecting watermarking in video coding is provided that comprises accessing a list of possible watermarks; generating propagation maps of modifications to the video that would be caused by applying the respective watermarks; generating a detection region responsive to each respective propagation map that includes blocks within the propagation map that collectively rank highest with respect to a selected detection criteria compared to each other region within the propagation map; selecting a threshold metric for evaluating detection regions; and removing watermarks from the list responsive to a comparison of their detection regions with the threshold metric.
    • 提供了一种用于在视频编码中检测和选择水印的方法,包括访问可能水印的列表; 生成将通过应用各个水印引起的对视频的修改的传播图; 响应于每个相应的传播图生成检测区域,所述检测区域包括传播图中的块,其相对于所述传播图中的每个其他区域相对于所选择的检测标准统一地排列最高; 选择用于评估检测区域的阈值度量; 以及响应于它们的检测区域与阈值度量的比较,从列表中去除水印。
    • 15. 发明授权
    • Content identification using fingerprint matching
    • 内容识别使用指纹匹配
    • US08805827B2
    • 2014-08-12
    • US13215402
    • 2011-08-23
    • Sitaram BhagavathyJeffrey A. BloomDekun ZouWen Chen
    • Sitaram BhagavathyJeffrey A. BloomDekun ZouWen Chen
    • G06F17/30
    • G06F17/30784G06K9/00744
    • Systems and methods of identifying media content, such as video content, that employ fingerprint matching at the level of video frames. The presently disclosed systems and methods of identifying media content can extract one or more fingerprints from a plurality of video frames included in query video content, and, for each of the plurality of video frames from the query video content, perform frame-level fingerprint matching of the extracted fingerprints against fingerprints extracted from video frames included in a plurality of reference video content. Using the results of such frame-level fingerprint matching, the presently disclosed systems and methods of identifying media content can identify the query content in relation to an overall sequence of video frames from at least one of the plurality of reference content, and/or in relation to respective video frames included in a sequence of video frames from the reference content.
    • 识别在视频帧级采用指纹匹配的媒体内容(诸如视频内容)的系统和方法。 目前公开的识别媒体内容的系统和方法可以从查询视频内容中包括的多个视频帧中提取一个或多个指纹,并且对于来自查询视频内容的多个视频帧中的每一个,执行帧级指纹匹配 所提取的指纹针对从包括在多个参考视频内容中的视频帧提取的指纹。 使用这种帧级指纹匹配的结果,目前公开的识别媒体内容的系统和方法可以相对于来自多个参考内容中的至少一个的视频帧的总体序列来识别查询内容,和/或 与包括在来自参考内容的视频帧序列中的各个视频帧的关系。
    • 16. 发明授权
    • Modifying a coded bitstream
    • 修改编码比特流
    • US08588459B2
    • 2013-11-19
    • US12451551
    • 2008-06-13
    • Jeffrey Adam BloomDekun Zou
    • Jeffrey Adam BloomDekun Zou
    • G06K9/00
    • G06T1/0035G06T2201/0053H04N19/13H04N19/467H04N19/48H04N19/61H04N19/85H04N19/93H04N21/23892H04N21/8358
    • Various implementations are provided for, for example, determining watermarking data, performing the watermarking, and processing watermarked data. At least one implementation watermarks AVC bitstream that uses CAVLC entropy coding. The watermarking data may be determined in a pre-processing stage and stored for later use in watermark a bitstream. One method accesses variable-length encoded data including an encoding of information identifying an actual reference used to predictively encode an image. The encoding of the information has a particular value. The method determines an alternative value that is different from the particular value, such that the alternative value is an encoding of alternative information that identifies a different reference from the actual reference. The alternative value is for use in watermarking the variable-length encoded data.
    • 提供了各种实施例,例如,确定水印数据,执行水印和处理水印数据。 至少一个实现水印使用CAVLC熵编码的AVC比特流。 可以在预处理阶段中确定水印数据,并将其存储以供稍后在水印中使用比特流。 一种方法访问可变长度编码数据,包括识别用于预测编码图像的实际参考的信息的编码。 信息的编码具有特定的价值。 该方法确定与特定值不同的替代值,使得替代值是识别与实际参考的不同参考的替代信息的编码。 替代值用于对可变长度编码数据进行水印处理。
    • 17. 发明申请
    • SUPPORT VECTOR REGRESSION BASED VIDEO QUALITY PREDICTION
    • 支持向量回归的视频质量预测
    • US20130027568A1
    • 2013-01-31
    • US13193802
    • 2011-07-29
    • Dekun ZouBeibei Wang
    • Dekun ZouBeibei Wang
    • H04N17/00
    • H04N7/50H04N17/004H04N19/172H04N19/61
    • Systems and methods of objective video quality measurement based on support vector machines. The video quality measurement systems can obtain information pertaining to features of a target training video, obtain corresponding information pertaining to features of a reference version of the target training video, and employ the target training features and/or the reference training features to build video quality models using such support vector machines. Based on the target training features and/or the reference training features used to build such video quality models, the video quality models can be made to conform more closely to the human visual system. Moreover, using such video quality models in conjunction with target features of a target video whose perceptual quality is to be measured, and/or reference features of a reference video, the video quality measurement systems can be employed to predict measurements of the perceptual quality of such a target video with increased accuracy.
    • 基于支持向量机的客观视频质量测量的系统和方法。 视频质量测量系统可以获得关于目标训练视频的特征的信息,获得与目标训练视频的参考版本的特征相关的相关信息,并且使用目标训练特征和/或参考训练特征来构建视频质量 使用这种支持向量机的模型。 基于用于构建这样的视频质量模型的目标训练特征和/或参考训练特征,可以使视频质量模型更符合人类视觉系统。 此外,使用这样的视频质量模型结合目标视频的感知质量要被测量的目标特征和/或参考视频的参考特征,可以采用视频质量测量系统来预测感知质量的测量 这样的目标视频具有更高的准确性。
    • 20. 发明授权
    • Changeable block list
    • 可更改块列表
    • US09113231B2
    • 2015-08-18
    • US12737822
    • 2009-08-17
    • Dekun ZouJeffrey Adam BloomShan He
    • Dekun ZouJeffrey Adam BloomShan He
    • H04N9/80H04N21/8358G06T1/00H04N21/2389H04N19/13H04N19/61H04N19/48H04N19/467H04N19/517
    • H04N21/8358G06T1/0035H04N19/13H04N19/467H04N19/48H04N19/517H04N19/61H04N21/23892
    • A method comprises accessing encoded video data; accessing a list of watermarks to the encoded video data; determining syntax elements for current blocks of video data and syntax elements of currents blocks with the watermarks; removing watermarks that cause visible artifacts based on differences in the syntax elements between the current blocks and current blocks with watermarks, thereby creating filtered list of acceptable watermarks. The method can further include determining coding variable ranges for the current block and current block with watermarks from the list; comparing the coding variable ranges for the current blocks and current blocks with watermarks from the list; and filtering out watermarks that yield coding variable ranges outside the coding variable ranges of the current blocks. Additionally, the method can include determining bit lengths of the current blocks and current blocks with watermarks from the list; comparing bit lengths of the current blocks and current blocks with watermarks from the list; and filtering out watermarks that yield bit lengths not equal to the bit lengths of the current blocks.
    • 一种方法包括访问编码视频数据; 访问水印列表到编码视频数据; 确定视频数据的当前块和具有水印的电流块的语法元素的语法元素; 基于当前块和具有水印的当前块之间的语法元素的差异来去除导致可见伪像的水印,从而创建可接受水印的过滤列表。 该方法还可以包括使用来自列表的水印确定当前块和当前块的编码变量范围; 将来自列表的水印的当前块和当前块的编码变量范围进行比较; 并且滤出在当前块的编码变量范围之外产生编码变量范围的水印。 此外,该方法可以包括使用来自列表的水印确定当前块和当前块的比特长度; 将当前块和当前块的比特长度与来自列表的水印进行比较; 并且滤出产生不等于当前块的比特长度的比特长度的水印。