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    • 3. 发明申请
    • SELECTION OF WATERMARKS FOR THE WATERMARKING OF COMPRESSED VIDEO
    • 选择压缩视频水印的水印
    • WO2010021694A1
    • 2010-02-25
    • PCT/US2009/004706
    • 2009-08-18
    • THOMSON LICENSINGZOU, DekunBLOOM, Jeffrey, AdamHE, Shan
    • ZOU, DekunBLOOM, Jeffrey, AdamHE, Shan
    • H04N7/26G06T1/00H04N7/34
    • H04N19/00763G06T1/0028G06T2201/0051G06T2201/0053G06T2201/0061G06T2201/0202H04N19/154H04N19/467H04N19/593
    • A method comprises accessing changes which can be watermarks in a list for coded data, the changes having an syntax element, an original value and an candidate alternative value; determining for a subset a group of compliant changes from the changes, the complaint changes being compliant with a coding protocol such as a CABAC encoding protocol; and selecting for the subset only compliant changes that result in the subset having only one candidate alternative value for each syntax elements and result in only compliant changes also meeting at least one performance criterion. The method can include determining fidelity, recoverability, or robustness of the watermarks and removing or preventing watermarks from being in the subset based on the fidelity, recoverability, or robustness, wherein fidelity, recoverability, and robustness are performance criteria. The method can include determining at least two performance values for the watermarks, determining some collective metric of the at least two performance values, and removing or preventing watermarks from being in the subset based on the same collective metric.
    • 一种方法包括访问可以是用于编码数据的列表中的水印的改变,所述改变具有语法元素,原始值和候选替代值; 根据变化确定子集一组合规变更,投诉变化符合诸如CABAC编码协议之类的编码协议; 以及仅为所述子集选择合规变化,所述变化导致所述子集对于每个语法元素仅具有一个候选替代值,并且仅导致符合变化也符合至少一个性能标准。 该方法可以包括确定水印的保真度,可恢复性或鲁棒性,并且基于保真度,可恢复性或鲁棒性去除或防止水印在子集中,其中保真度,可恢复性和鲁棒性是性能标准。 该方法可以包括确定水印的至少两个性能值,确定至少两个性能值的一些集合度量,以及基于相同的集合度量去除或防止水印在该子集中。
    • 6. 发明申请
    • CABAC/AVC COMPLIANT WATERMARKING OF SYNTAX ELEMENTS IN COMPRESSED VIDEO
    • CABAC / AVC在压缩视频中符合性语音元素的水印
    • WO2010021682A1
    • 2010-02-25
    • PCT/US2009/004689
    • 2009-08-17
    • THOMSON LICENSINGZOU, DekunBLOOM, Jeffrey, AdamHE, Shan
    • ZOU, DekunBLOOM, Jeffrey, AdamHE, Shan
    • H04N7/26H04N7/50G06T1/00
    • 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来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。
    • 9. 发明申请
    • CONTEXT-BASED ADAPTIVE BINARY ARITHMETIC CODING (CABAC) VIDEO STREAM COMPLIANCE
    • 基于语境的自适应二进制算术编码(CABAC)视频流符合
    • WO2010021699A1
    • 2010-02-25
    • PCT/US2009/004713
    • 2009-08-17
    • THOMSON LICENSINGZOU, DekunBLOOM, Jeffrey, AdamHE, Shan
    • ZOU, DekunBLOOM, Jeffrey, AdamHE, Shan
    • H03M7/00
    • H03M7/40G06T1/0021H04N19/13H04N19/467H04N19/513H04N19/61H04N19/70
    • A method of providing CABAC compliant changes such as watermarks comprises accessing encoded data such as video which comprise at least two blocks; creating or accessing a list of changes to the encoded data that include a direct change to a block; determining motion character or motion vector differential of non-immediate block, non-immediate blocks being adjacent to an immediate block that are immediately adjacent to the block; determining change to the immediate block based on original motion character of the block and the non-immediate block and the motion character of the block that would result from the application of the change; storing the change to the list if the change does not cause a difference to the immediate block; and evaluating other potential changes if other potential changes are available, wherein the other potential changes are subjected to the same process steps as the direct change.
    • 提供诸如水印的CABAC兼容改变的方法包括访问包括至少两个块的编码数据,例如视频; 创建或访问包括对块的直接改变的编码数据的改变列表; 确定与立即块相邻的非立即块非立即块相邻的运动特征或运动矢量差; 基于块的原始运动特征和由应用变化导致的块的非直接块和运动特性来确定对立即块的改变; 如果更改不会导致立即块的差异,则将更改存储到列表中; 并且如果其他潜在变化可用,则评估其他潜在变化,其中其他潜在变化经受与直接变化相同的处理步骤。
    • 10. 发明申请
    • MODIFYING A CODED BITSTREAM
    • 修改编码的BITSTREAM
    • WO2008154041A1
    • 2008-12-18
    • PCT/US2008/007441
    • 2008-06-13
    • THOMSON LICENSINGBLOOM, Jeffrey, AdamZOU, Dekun
    • BLOOM, Jeffrey, AdamZOU, Dekun
    • G06T1/00
    • 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 (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 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(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。 该方法确定(830)不同于特定值的替代值,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。