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    • 2. 发明申请
    • METHOD FOR CODING PULSE VECTORS USING STATISTICAL PROPERTIES
    • 使用统计特性编码脉冲矢量的方法
    • WO2016025282A1
    • 2016-02-18
    • PCT/US2015/043939
    • 2015-08-06
    • GOOGLE TECHNOLOGY HOLDINGS LLC
    • MITTAL, UdarASHLEY, James P.
    • H03M7/30G10L19/24
    • G10L19/038H03M7/3082H04N19/94
    • Improved methods for coding an ensemble of pulse vectors utilize statistical models (i.e., probability models) for the ensemble of pulse vectors, to more efficiently code each pulse vector of the ensemble. At least one pulse parameter describing the non-zero pulses of a given pulse vector is coded using the statistical models and the number of non-zero pulse positions for the given pulse vector. In some embodiments, the number of non-zero pulse positions are coded using range coding. The total number of unit magnitude pulses may be coded using conditional (state driven) bitwise arithmetic coding. The non-zero pulse position locations may be coded using adaptive arithmetic coding. The non-zero pulse position magnitudes may be coded using probability-based combinatorial coding, and the corresponding sign information may be coded using bitwise arithmetic coding. Such methods are well suited to coding non-independent-identically-distributed signals, such as coding video information.
    • 编码脉冲向量集合的改进方法利用用于脉冲向量集合的统计模型(即,概率模型),以更有效地编码集合的每个脉冲向量。 描述给定脉冲矢量的非零脉冲的至少一个脉冲参数使用统计模型和给定脉冲向量的非零脉冲位置的数量进行编码。 在一些实施例中,使用范围编码对非零脉冲位置的数量进行编码。 可以使用条件(状态驱动)按位算术编码对单位幅度脉冲的总数进行编码。 可以使用自适应算术编码对非零脉冲位置位置进行编码。 可以使用基于概率的组合编码来对非零脉冲位置幅度进行编码,并且可以使用按位运算编码对相应的符号信息进行编码。 这样的方法非常适合于编码非独立相同分布的信号,例如编码视频信息。
    • 3. 发明申请
    • METHOD AND TECHNICAL EQUIPMENT FOR VIDEO ENCODING AND DECODING
    • 用于视频编码和解码的方法和技术设备
    • WO2015140402A3
    • 2015-11-12
    • PCT/FI2015050172
    • 2015-03-16
    • NOKIA TECHNOLOGIES OY
    • BUGDAYCI DONELAINEMA JANIUGUR KEMALHANNUKSELA MISKA
    • H04N19/186G06T11/00
    • H04N19/136H04N19/105H04N19/124H04N19/159H04N19/182H04N19/187H04N19/423H04N19/94
    • There are disclosed various methods, apparatuses and computer program products for video encoding/decoding. In some embodiments the method comprises signalling a long-term palette information, where the long-term palette information comprises at least information on the color values for each entry in the long-term palette; generating a palette that is used for coding a coding unit by either selecting at least one color value from a long-term palette or by separately signaling at least one color value, or performing both. Alternatively the method comprises constructing a long-term palette during an encoding process or a decoding process; and updating the long-term palette dynamically after coding a coding unit, and constructing a palette used for encoding or decoding a coding unit using information from the long-term palette.
    • 公开了用于视频编码/解码的各种方法,装置和计算机程序产品。 在一些实施例中,该方法包括发信号通知长期调色板信息,其中长期调色板信息至少包括关于长期调色板中每个条目的颜色值的信息; 生成用于通过从长期调色板中选择至少一个颜色值或通过分别发送至少一个颜色值或执行两者的编码单元来编码的调色板。 或者,该方法包括在编码处理或解码过程期间构建长期调色板; 以及在对编码单元进行编码之后动态地更新长期调色板,以及使用来自长期调色板的信息构建用于对编码单元进行编码或解码的调色板。
    • 5. 发明申请
    • METHOD AND APPARATUS FOR ENCODING OR DECODING A PALETTE IN PALETTE CODING MODE
    • 在PALETTE编码模式下编码或解码PALETTE的方法和装置
    • WO2015086718A3
    • 2015-10-29
    • PCT/EP2014077297
    • 2014-12-10
    • CANON KKCANON EUROP LTD
    • LAROCHE GUILLAUMEGISQUET CHRISTOPHEONNO PATRICE
    • H04N19/463H04N19/186H04N19/50H04N19/593H04N19/94
    • H04N19/186H04N19/176H04N19/463H04N19/593H04N19/94
    • The invention concerns a method and a device for processing a current pixel block of an image using a palette prediction mode according to HEVC RExt. The mode uses a current palette to build a predictor block of indexes to predict the current pixel block. The current palette comprises entries associating entry indexes with pixel values. The method comprises predicting the current palette from entries of two or more palettes that are palettes previously used to process blocks of pixels. A palette predictor may be used that is built from the two or more palettes, preferably from the last used palette for a coding unit in the current coding entity and from the previously used palette for which a flag bitmap indicates whether or not its elements have been copied into the last used palette. Accordingly, the coding of the palette mode is improved.
    • 本发明涉及一种使用根据HEVC REXT的调色板预测模式来处理图像的当前像素块的方法和装置。 该模式使用当前调色板来构建索引的预测块来预测当前像素块。 当前调色板包括将条目索引与像素值相关联的条目。 该方法包括从先前用于处理像素块的调色板的两个或更多个调色板的条目预测当前调色板。 可以使用从两个或更多个调色板构建的调色板预测器,优选地来自当前编码实体中的编码单元的最后使用的调色板,以及来自标记位图指示其元素是否已经被使用的先前使用的调色板 复制到最后使用的调色板。 因此,提高了调色板模式的编码。