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    • 1. 发明申请
    • DATA HIDING TECHNIQUE
    • 数据隐藏技术
    • WO2007136546A3
    • 2008-09-12
    • PCT/US2007011127
    • 2007-05-08
    • THOMSON LICENSINGZOU DEKUNTIAN JUNZHAI JIEFUBLOOM JEFFREY ADAMLLACH JOAN
    • ZOU DEKUNTIAN JUNZHAI JIEFUBLOOM JEFFREY ADAMLLACH JOAN
    • H04N1/32G06T5/00
    • H04N1/32251H04N1/32309H04N2201/3205H04N2201/3214H04N2201/3215H04N2201/323H04N2201/3236H04N2201/3239
    • Information available at a decoder is embedded into image content after decoding by first representing that information by at least one film grain pattern and then blending that at least one film grain pattern with the decoded image content. Such image content is typically in the form of a movie and examples of the information to be embedded include identification of the specific decoding device, the user of the decoding device, the time and date of decoding, the model number of the device, the versions of software running on the device, the status of the device or connections to the device, the contents of device registers or memory locations within the device, among many other possible data. When an unauthorized copy of image content is discovered, the copied image content undergoes a comparison to the decoded image content to generate difference data. Thereafter, the difference data undergoes comparison with a database of film grain patterns to recover the embedded data.
    • 通过首先通过至少一个胶片颗粒图案表示该信息,然后将该至少一个胶片颗粒图案与解码的图像内容进行混合,将解码器可用的信息嵌入到解码之后的图像内容中。 这样的图像内容通常是电影的形式,并且要嵌入的信息的示例包括特定解码设备的识别,解码设备的用户,解码的时间和日期,设备的型号,版本 在设备上运行的软件,设备的状态或与设备的连接,设备寄存器的内容或设备内的存储器位置以及许多其他可能的数据。 当发现图像内容的未授权复制时,复制的图像内容经历与解码的图像内容的比较以产生差异数据。 此后,差分数据与胶片颗粒图案的数据库进行比较以恢复嵌入数据。
    • 4. 发明申请
    • VIDEO QUALITY MONITORING
    • 视频质量监测
    • WO2012109434A8
    • 2012-11-01
    • PCT/US2012024464
    • 2012-02-09
    • DIALOGIC CORPWANG BEIBEIZOU DEKUNDING RANLIU TAOBHAGAVATHY SITARAMNARVEKAR NIRANJANBLOOM JEFFREY ACASH GLENN L
    • WANG BEIBEIZOU DEKUNDING RANLIU TAOBHAGAVATHY SITARAMNARVEKAR NIRANJANBLOOM JEFFREY ACASH GLENN L
    • H04N7/12
    • H04N17/004
    • Systems and methods of perceptual quality monitoring of video information, communications, and entertainment that can estimate the perceptual quality of video with high accuracy, and can be used to produce quality scores that better correlate with subjective quality scores of an end user. The systems and methods of perceptual quality monitoring of video can generate, from an encoded input video bitstream, estimates of one or more quality parameters relating to the video, such as the coding bit rate parameter, the video frame rate parameter, and the packet loss rate parameter, and provide these video quality parameter estimates to a predetermined video quality estimation model. Because the estimates of the video quality parameters are generated from the encoded input video bitstream as it is being received, the systems and methods are suitable for use as QoE monitoring tools.
    • 对视频信息,通信和娱乐进行感知质量监测的系统和方法,可以高准确度地估计视频的感知质量,并可用于产生与最终用户的主观质量分数更好相关的质量分数。 视频的感知质量监测系统和方法可以从编码输入视频比特流生成与视频有关的一个或多个质量参数的估计,诸如编码比特率参数,视频帧率参数和分组丢失 速率参数,并将这些视频质量参数估计提供给预定的视频质量估计模型。 由于视频质量参数的估计是在编码输入视频比特流被接收时从其生成的,所以这些系统和方法适合用作QoE监视工具。
    • 5. 发明专利
    • Selection of watermarks for watermark processing in compressed video
    • 在压缩视频中选择水印进行水印
    • JP2014099904A
    • 2014-05-29
    • JP2014007029
    • 2014-01-17
    • Thomson Licensingトムソン ライセンシングThomson Licensing
    • ZOU DEKUNJEFFREY ADAM BLOOMHE SHAN
    • H04N19/00H04N19/467H04N19/70
    • H04N19/00763G06T1/0028G06T2201/0051G06T2201/0053G06T2201/0061G06T2201/0202H04N19/154H04N19/467H04N19/593
    • PROBLEM TO BE SOLVED: To provide an effective method for embedding watermarks in a CABAC bit stream.SOLUTION: A method includes the steps of: accessing alteration of watermarks, etc. having a syntax element, an original value, and a candidate alternative value in a list of coded data; determining, from that alteration, a compliance change group compliant with a coding protocol such as a CABAC coding protocol, etc. as a subset; and selecting, for a subset, only a compliance change constituting a subset having only one candidate alternative value for each syntax value and conforming to at least one performance criterion. The method can include the steps of: determining the fidelity, restoration possibility, or robustness of the watermark; and removing the watermark from within the subset on the basis of the fidelity, restoration possibility, or robustness, or preventing the watermark from being present in the subset, the fidelity, restoration possibility, and robustness being referenced to performance.
    • 要解决的问题:提供一种在CABAC比特流中嵌入水印的有效方法。解决方案:一种方法包括以下步骤:访问具有语法元素,原始值和候选替代值的水印等的改变, 编码数据列表; 根据该改变确定符合诸如CABAC编码协议等编码协议的合规变更组作为子集; 以及对于子集,仅选择构成仅具有每个语法值的一个候选替代值并且符合至少一个性能标准的子集的顺应性改变。 该方法可以包括以下步骤:确定水印的保真度,恢复可能性或鲁棒性; 并且基于保真度,恢复可能性或鲁棒性,或者防止水印存在于子集中,从子集内去除水印,保真度,恢复可能性和鲁棒性参考性能。
    • 6. 发明专利
    • Modifying coded bitstream
    • 修改编码的BITSTREAM
    • JP2014042311A
    • 2014-03-06
    • JP2013208787
    • 2013-10-04
    • Thomson Licensingトムソン ライセンシングThomson Licensing
    • JEFFREY ADAM BLOOMZOU DEKUN
    • H04N19/50
    • G06T1/0035G06T2201/0053H04N19/13H04N19/467H04N19/48H04N19/61H04N19/85H04N19/93H04N21/23892H04N21/8358
    • PROBLEM TO BE SOLVED: To provide methods for determining watermarking data, performing the watermarking, and processing watermarked data.SOLUTION: A method watermarks an AVC bitstream that uses CAVLC entropy coding. The watermarking data may be determined in a pre-processing stage and stored for later use in watermarking a bitstream. One method accesses (810) 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 (830) an alternative value, which is different from the particular information and thus 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.
    • 要解决的问题:提供用于确定水印数据,执行水印和处理水印数据的方法。解决方案:一种使用CAVLC熵编码的AVC比特流的水印。 可以在预处理阶段确定水印数据,并且将其存储以用于稍后用于对比特流进行加水印。 一种方法访问(810)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。 方法确定(830)与特定信息不同的替代值,因此是识别与实际参考不同的参考的备选信息的编码。 替代值用于对可变长度编码数据进行水印处理。
    • 8. 发明专利
    • MODIFYING A CODED BITSTREAM
    • CA2681402C
    • 2016-02-16
    • CA2681402
    • 2007-11-02
    • THOMSON LICENSING
    • ZOU DEKUNBLOOM JEFFREY ADAMYIN PENGDIVORRA ESCODA OSCAR
    • G06T1/00
    • Implementations may relate to various aspects of modifying, or using, a coded bitstream, or to recovering watermarking information from data. In one implementation, a coded bitstream is modified to allow for the application of a watermark to the coded bitstream without changing the coding of any other syntax elements in the bitstream. This is performed by identifying conditions necessary to change a coded syntax element without disrupting the interpretation of subsequent coded elements. The coded syntax element is replaced with another coded value if the modified value generates the same decoding variables as the original value would have generated. Particular implementations focus on syntax elements coded using entropy coding, including, for example, Context-based Adaptive Binary Arithmetic Coding (CABAC). Regardless of the type of coding or watermarking, various implementations may provide for recovering watermarking information. Particular implementations recover watermarking information using detection data and feature information.