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11. 发明申请

WO2007080520A2 ADAPTIVE ENCODING AND DECODING 审中-公开
标题翻译：自适应编码和解码
公开(公告)号：WO2007080520A2
公开(公告)日：2007-07-19
申请号：PCT/IB2007000812
申请日：2007-01-12
申请人： FRANCE TELECOM , JUNG JOEL , LAROCHE GUILLAUME , BAILLAVOINE MARC
发明人： JUNG JOEL , LAROCHE GUILLAUME , BAILLAVOINE MARC
CPC分类号： H04N19/517 , H04N19/196 , H04N19/463 , H04N19/52
摘要： The invention relates to a method for transmitting part of an image, said method comprising, in an encoding phase: the analysis of an encoding context; the adaptation of a parameter of a group of prediction functions that can be used for the encoding; the formation of a first predicted descriptor by means of a selected prediction function; and the determination and transmission of a residue (e) between the predicted descriptor and a current descriptor. The inventive method also has a decoding phase comprising: the analysis of a decoding context; the adaptation of a parameter of a group of prediction functions that can be used for the encoding; the formation of a second predicted descriptor (P*)by means of a selected prediction function; and the combination of the second predicted descriptor and the received residue for providing a decoded version (V*) of the current descriptor.
摘要翻译：本发明涉及一种用于发送图像的一部分的方法，所述方法包括：在编码阶段：对编码上下文的分析; 适用于可用于编码的一组预测函数的参数; 通过选择的预测函数形成第一预测描述符; 以及在预测描述符和当前描述符之间的残差（e）的确定和传输。本发明的方法还具有解码阶段，包括：解码上下文的分析; 适用于可用于编码的一组预测函数的参数; 通过选择的预测函数形成第二预测描述符（P *）; 以及第二预测描述符和接收到的残差的组合，用于提供当前描述符的解码版本（V *）。

12. 发明申请

WO2010072946A2 IMAGE PREDICTION USING THE REPARTITIONING OF A REFERENCE CAUSAL AREA, AND ENCODING AND DECODING USING SUCH A PREDICTION 审中-公开
标题翻译：使用参考原因区域的重新编码进行图像预测，以及使用这种预测进行编码和解码
公开(公告)号：WO2010072946A2
公开(公告)日：2010-07-01
申请号：PCT/FR2009052560
申请日：2009-12-16
申请人： FRANCE TELECOM , LAROCHE GUILLAUME , JUNG JOEL
发明人： LAROCHE GUILLAUME , JUNG JOEL
IPC分类号： H04N7/26 , H04N7/32 , H04N7/36 , H04N7/50
CPC分类号： H04N19/537 , H04N19/51 , H04N19/52 , H04N19/61
摘要： The invention relates to a method for decoding a data stream (F) representative of an image or an image sequence, said stream (F) including data representative of at least one portion of said images (IE), wherein said method comprises the step of predicting a partition movement vector (P1; P'1 ) of a current image portion relative to a reference causal image (Cs; Ct) that has been partitioned according to a predetermined encoding mode for said area. The prediction step comprises, relative to the current partition (P1; P'1 ), the steps of: again partitioning (D3) at least one portion (MBra, MBrb, MBrc; MBnE-i) of the reference causal area into a plurality of reference partitions; determining (D4) the movement vectors (MVM -MVr3; MVr'1) respectively associated with reference partitions (Pr4a, Pr16b, Pr13c; Pr'1 ) resulting after the new partitioning; determining (D5) a predictive movement vector from said determined movement vectors (MVr1-MVr3, MVr'1 ); and predicting (D6) the movement vector of said current partition from said determined predictive movement vector.
摘要翻译：本发明涉及一种用于解码表示图像或图像序列的数据流（F）的方法，所述流（F）包括表示所述图像（IE）的至少一部分的数据，其中所述方法包括步骤预测当前图像部分相对于已经根据所述区域的预定编码模式划分的参考因果图像（Cs; Ct）的分区移动向量（P1; P'1）。相对于当前分区（P1; P'1），预测步骤包括以下步骤：再次将参考因果区域的至少一部分（MBra，MBrb，MBrc; MBnE-i）划分为多个的参考分区; 确定（D4）分别与在新分割之后产生的参考分区（Pr4a，Pr16b，Pr13c; Pr'1）相关联的移动向量（MVM -MVr3; MVr'1）从所述确定的运动矢量（MVr1-MVr3，MVr'1）确定（D5）预测运动矢量; 以及从所确定的预测运动矢量中预测（D6）所述当前分区的运动矢量。

13. 发明申请

WO2015086717A3 IMPROVED PALETTE MODE IN HEVC 审中-公开
标题翻译：改善HEVC中的PALETTE模式
公开(公告)号：WO2015086717A3
公开(公告)日：2015-08-06
申请号：PCT/EP2014077296
申请日：2014-12-10
申请人： CANON KK , CANON EUROP LTD
发明人： LAROCHE GUILLAUME , GISQUET CHRISTOPHE , ONNO PATRICE
IPC分类号： H04N19/50 , H04N19/105 , H04N19/159 , H04N19/182 , H04N19/463 , H04N19/93
CPC分类号： H04N19/463 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/93
摘要： A method for determining encoding parameters for encoding indexes of a block of indexes used for encoding a coding unit of an image according to a palette, each index being related to one of the pixels forming the coding unit, the palette comprising a set of indexes associated to pixel values. The method comprises: - generating each index of the block of indexes related to the coding unit from the palette based on corresponding encoding parameters, and - if indexes of the block of indexes cannot be generated from the palette for at least one pixels of the coding unit, generating index values corresponding to escape values for replacing said indexes of the block of indexes which cannot be generated, wherein encoding parameters corresponding to an index are determined according to the spatial neighbourhood of said pixel regarding to an encoding order.
摘要翻译：一种确定编码参数的方法，用于编码用于根据调色板对图像的编码单元进行编码的索引索引的索引，每个索引与形成编码单元的像素之一相关，该调色板包括一组相关的索引到像素值。该方法包括： - 基于对应的编码参数，从调色板生成与编码单元相关的索引块的每个索引，以及 - 如果编码块的至少一个像素不能从调色板生成索引块的索引生成对应于用于替换不能生成的索引块的所述索引的转义值的索引值，其中根据关于编码顺序的所述像素的空间邻域确定与索引对应的编码参数。

14. 发明申请

WO2015086718A3 METHOD AND APPARATUS FOR ENCODING OR DECODING A PALETTE IN PALETTE CODING MODE 审中-公开
标题翻译：在PALETTE编码模式下编码或解码PALETTE的方法和装置
公开(公告)号：WO2015086718A3
公开(公告)日：2015-10-29
申请号：PCT/EP2014077297
申请日：2014-12-10
申请人： CANON KK , CANON EUROP LTD
发明人： LAROCHE GUILLAUME , GISQUET CHRISTOPHE , ONNO PATRICE
IPC分类号： H04N19/463 , H04N19/186 , H04N19/50 , H04N19/593 , H04N19/94
CPC分类号： H04N19/186 , H04N19/176 , H04N19/463 , H04N19/593 , H04N19/94
摘要： 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.
摘要翻译：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。

15. 发明申请

WO2015091879A3 IMPROVED ENCODING PROCESS USING A PALETTE MODE 审中-公开
标题翻译：使用调色板模式改进编码过程
公开(公告)号：WO2015091879A3
公开(公告)日：2015-08-20
申请号：PCT/EP2014078606
申请日：2014-12-18
申请人： CANON KK , CANON EUROP LTD
发明人： GISQUET CHRISTOPHE , ONNO PATRICE , LAROCHE GUILLAUME
IPC分类号： H04N19/50 , G09G5/06 , H04N1/64 , H04N19/182 , H04N19/94
CPC分类号： H04N19/186 , G09G5/06 , G09G2320/106 , G09G2340/02 , H04N1/644 , H04N19/124 , H04N19/147 , H04N19/176 , H04N19/182 , H04N19/50 , H04N19/94
摘要： The present invention is related to video coding and decoding, in particular HEVC RExt that define a palette coding mode dedicated to the coding of screen contents. In improved palette coding modes according to the invention, when building a palette, each time a new pixel is added to the class a palette entry defines, the palette entry is modified to take the means value of the pixels belonging to such class. In other improved palette coding modes, a built palette is post-processed to substitute a palette entry with a close entry of a palette predictor PRED. In yet other embodiments, palette coding modes having different threshold values to drive the building of their respective palettes are successively tested to use the best one in terms of rate-distortion criterion.
摘要翻译：本发明涉及视频编码和解码，特别是定义专用于屏幕内容编码的调色板编码模式的HEVC RExt。在根据本发明的改进的调色板编码模式中，当构建调色板时，每当新的像素被添加到调色板条目定义的类中时，调色板条目被修改以获取属于该类的像素的平均值。在其他改进的调色板编码模式中，内置的调色板被后处理以用调色板预测器PRED的近距输入代替调色板条目。在其他实施例中，具有不同阈值以驱动其各自调色板的构建的调色板编码模式被连续地测试以使用就速率失真标准而言最好的调色板编码模式。

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