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    • 8. 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。
    • 9. 发明专利
    • Moving picture coding device, control method thereof, and computer program
    • 移动图像编码设备,其控制方法和计算机程序
    • JP2014017626A
    • 2014-01-30
    • JP2012153022
    • 2012-07-06
    • Canon Incキヤノン株式会社
    • MADA KOJI
    • H04N19/00H04N19/593H04N5/92
    • H04N19/00763H04N19/115H04N19/152H04N19/172
    • PROBLEM TO BE SOLVED: To provide a technology capable of simultaneously realizing seamless recording and pre-recording by appropriately controlling an encoding amount so as not to cause an underflow of a virtual buffer, even if a recorded coded stream and the virtual buffer are connected at any timing.SOLUTION: A moving picture coding device calculates an occupancy amount of a virtual buffer assumed when storing a picture contained in a generated coded stream for decoding processing, and controls a generation code amount at coding means according to information on the occupancy amount. The moving picture coding device configures the virtual buffer having an initial value which matches with an occupancy amount of a virtual buffer at an end of a coded stream written in a recording medium, every time a picture group on a coded stream starts, updates the occupancy amount of the virtual buffer based on a size of a picture contained in the coded stream, compares the minimum occupancy amount within a plurality of calculated occupancy amounts of the virtual buffer and a generated code amount, and controls the code generation amount not to exceed the minimum occupancy amount.
    • 要解决的问题:即使记录的编码流和虚拟缓冲器被连接在一起,提供能够通过适当地控制编码量以便不引起虚拟缓冲器的下溢来同时实现无缝记录和预先记录的技术 任何时间。解决方案:运动图像编码装置计算当存储包含在生成的用于解码处理的编码流中的图像时假设的虚拟缓冲器的占用量,并且根据占用量的信息来控制编码装置处的生成代码量。 运动图像编码装置在编码流中写入的编码流结束时配置具有与虚拟缓冲器的占有量相匹配的初始值的虚拟缓冲器,每当编码流的图像组开始时,更新占有率 基于包含在编码流中的图像的大小的虚拟缓冲器的数量,将多个计算出的虚拟缓冲器的占用量和生成的代码量之间的最小占用量进行比较,并且控制代码生成量不超过 最低入住金额
    • 10. 发明专利
    • Image coding device and image decoding device
    • 图像编码装置和图像解码装置
    • JP2012142886A
    • 2012-07-26
    • JP2011001136
    • 2011-01-06
    • Kddi CorpKddi株式会社
    • KATO HARUHISANAITO HITOSHI
    • H04N19/50H04N19/11H04N19/136H04N19/154H04N19/176H04N19/186H04N19/196H04N19/423H04N19/46H04N19/593H04N19/60H04N19/61H04N19/70H04N19/80H04N19/91
    • H04N19/00763H04N19/105H04N19/593
    • PROBLEM TO BE SOLVED: To provide an image coding device with high coding efficiency and an image decoding device.SOLUTION: A plurality of prediction systems using various types of correlations between pixels are adaptively applied with reference to a coded signal. A first residual and prediction information are obtained by first prediction means 10 for carrying out intra prediction or the like on an input pixel and the like, a second residual and prediction information are obtained by second prediction means 20 for predicting the first residual as serial additional processing and the like, and a third residual and prediction information are obtained by third prediction means 30 for directly predicting a pixel to be coded as parallel additional processing on the input pixel and the like. It is determined which of the second residual and the third residual is to be coded based on coding cost, and the signals are switched by first switching means 40 or the like.
    • 要解决的问题:提供具有高编码效率的图像编码装置和图像解码装置。 解决方案:参考编码信号自适应地应用使用像素之间的各种类型的相关性的多个预测系统。 由输入像素等进行帧内预测等的第一预测单元10获得第一残差预测信息,第二残差预测信息由预测第一残差的第二预测单元20获得,作为串行附加 处理等,并且第三预测装置30通过第三预测装置30直接预测要编码的像素作为对输入像素等的并行附加处理。 确定基于编码成本对第二残差和第三残差中的哪一个进行编码,并且通过第一切换装置40等来切换信号。 版权所有(C)2012,JPO&INPIT