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1. 发明申请

WO2015051920A1 VIDEO ENCODING AND DECODING 审中-公开
标题翻译：视频编码和解码
公开(公告)号：WO2015051920A1
公开(公告)日：2015-04-16
申请号：PCT/EP2014/002746
申请日：2014-10-10
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： GISQUET, Christophe , LAROCHE, Guillaume , ONNO, Patrice
IPC分类号： H04N19/117 , H04N19/523
CPC分类号： H04N19/117 , H04N19/523
摘要： A lossy codec, in particular an encoder or decoder compliant with HEVC, has tools (functions or capabilities) which are not useful for lossless compression. Surprisingly, these existing tools in the HEVC specifications do not bring any coding efficiency gain when dealing with lossless compression. These tools (functions or capabilities) can then either be omitted entirely from the encoder or decoder or, alternatively, they can be inhibited in the lossless mode but available when lossy compression is to be performed. The proposed modifications can alternatively be applied for the coding of screen content sequences, both for the lossless and the lossy cases, due to their particular properties.
摘要翻译：有损编解码器，特别是符合HEVC的编码器或解码器，具有对无损压缩无用的工具（功能或功能）。令人惊讶的是，在处理无损压缩时，HEVC规范中的现有工具不会带来任何编码效率增益。这些工具（功能或功能）可以完全从编码器或解码器中省略，或者替代地，它们可以在无损模式下被禁止，但是当要进行有损压缩时可以使用它们。由于其特定的性质，所提出的修改可以替代地应用于屏幕内容序列的编码，无论是无损和有损的情况。

2. 发明申请

WO2015091879A2 IMPROVED ENCODING PROCESS USING A PALETTE MODE 审中-公开
标题翻译：使用PALETTE模式改进编码过程
公开(公告)号：WO2015091879A2
公开(公告)日：2015-06-25
申请号：PCT/EP2014/078606
申请日：2014-12-18
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： GISQUET, Christophe , ONNO, Patrice , LAROCHE, Guillaume
IPC分类号： H04N19/50
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的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，每当调色板条目定义新像素被添加到类时，调色板条目被修改为采用属于这种类的像素的均值。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的紧密条目代替调色板条目。在其他实施例中，连续测试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，以便在速率 - 失真准则方面使用最好的。

3. 发明申请

WO2015052273A1 METHOD AND APPARATUS FOR DISPLACEMENT VECTOR COMPONENT PREDICTION IN VIDEO CODING AND DECODING 审中-公开
标题翻译：视频编码和解码中位移矢量分量预测的方法与装置
公开(公告)号：WO2015052273A1
公开(公告)日：2015-04-16
申请号：PCT/EP2014/071621
申请日：2014-10-09
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： LAROCHE, Guillaume , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/52 , H04N19/593
CPC分类号： H04N19/593 , H04N19/105 , H04N19/147 , H04N19/176 , H04N19/52
摘要： The present invention concerns a method and a device for predicting a displacement vector component in the process of encoding or decoding a video. It applies more particularly to a mode of coding where a block of pixel is predictively encoded based on a predictor block pertaining to the same image. This mode of encoding a block of pixel is generally referred to as INTRA Block Copy mode. It proposes to improve the encoding of a displacement vector by introducing a step of prediction of this vector into an INTRA Block Copy encoding mode. Accordingly, the coding of the displacement vector is improved.
摘要翻译：本发明涉及一种用于在编码或解码视频的过程中预测位移矢量分量的方法和装置。更具体地，涉及基于与相同图像有关的预测器块来预测编码像素块的编码模式。编码像素块的这种模式通常被称为INTRA块复制模式。它提出通过将该向量的预测步骤引入INTRA块复制编码模式来改进位移矢量的编码。因此，能够提高位移矢量的编码。

4. 发明申请

WO2016055486A1 IMPROVED ENCODING PROCESS USING A PALETTE MODE 审中-公开
标题翻译：使用PALETTE模式改进编码过程
公开(公告)号：WO2016055486A1
公开(公告)日：2016-04-14
申请号：PCT/EP2015/073062
申请日：2015-10-06
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： LAROCHE, Guillaume , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/93 , H04N19/593 , H04N19/70
CPC分类号： H04N19/176 , H04N19/103 , H04N19/139 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/93
摘要： The present invention is related to video coding and decoding, in particular HEVC SCC that define a palette coding mode. In conventional palette modes, the block of levels built from the Coding Unit and from the palette is encoded using syntax elements, such as the "Pred mode" element, the optional "Level" element and the "Run" element defining the number of successive indexes of the block of indexes that are concerned by an operation defined by the "Pred mode" element and the optional "Level" element. In improved embodiments of the invention, the last "Run" element for the Coding Unit uses a particular up-to-end codeword, instead of a codeword associated with a defined number of successive indexes, in order to indicate to perform the operation for the indexes at all remaining block positions up to the end of the block of indexes, regardless the number of the remaining block positions, are concerned.
摘要翻译：本发明涉及视频编码和解码，特别是定义调色板编码模式的HEVC SCC。在常规调色板模式中，从编码单元和调色板构建的级别块使用诸如“Pred模式”元素，可选的“Level”元素和定义连续数目的“Run”元素的语法元素进行编码由“Pred模式”元素和可选“Level”元素定义的操作涉及的索引块的索引。在本发明的改进实施例中，用于编码单元的最后一个“运行”元素使用特定的最新码字，而不是与定义数量的连续索引相关联的码字，以便指示执行对于所有剩余的块位置的索引直到索引块的结尾，而不考虑剩余块位置的数量。

5. 发明申请

WO2015086716A1 METHOD AND APPARATUS FOR SYNTAX ELEMENT ENCODING IN A VIDEO CODEC 审中-公开
标题翻译：在视频编解码器中编码的语音元素的方法和装置
公开(公告)号：WO2015086716A1
公开(公告)日：2015-06-18
申请号：PCT/EP2014/077295
申请日：2014-12-10
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： LAROCHE, Guillaume , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/13 , H04N19/157 , H04N19/169
CPC分类号： H04N19/13 , H04N19/157 , H04N19/184 , H04N19/1887 , H04N19/593 , H04N19/70 , H04N19/93
摘要： The present invention concerns a method and a device for predicting a displacement vector component syntax element encoding in the process of encoding or decoding a video. It particularly concerns the "Run" syntax element in a palette mode encoding in HEVC. It applies more particularly to a mode of coding where a block of pixel is predictively encoded based on a predictor block encoded with, or built from, a so-called palette. It proposes to improve the encoding of the Run syntax element by using a variable Golomb order. Several embodiments are describes where the Golomb order is adapted according to different parameters. Accordingly, the coding of the Run syntax element is improved.
摘要翻译：本发明涉及一种用于在编码或解码视频的过程中预测位移矢量分量语法元素编码的方法和装置。它尤其涉及HEVC中调色板模式编码中的“运行”语法元素。更具体地说，涉及一种编码模式，其中像素块基于由所谓的调色板编码或由所谓的调色板构建的预测器块进行预测编码。它提出通过使用变量Golomb顺序来改进Run语法元素的编码。几个实施例描述了根据不同参数调制哥伦布秩序。因此，Run语法元素的编码得到改进。

6. 发明申请

WO2016120468A1 PALETTE PREDICTOR INITIALIZER WHEN ENCODING OR DECODING SELF-CONTAINED CODING STRUCTURES 审中-公开
标题翻译：编码或解码自包含编码结构时的PALETTE PREDICTOR初始化
公开(公告)号：WO2016120468A1
公开(公告)日：2016-08-04
申请号：PCT/EP2016/051974
申请日：2016-01-29
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： GISQUET, Christophe , LAROCHE, Guillaume , ONNO, Patrice
IPC分类号： H04N19/196 , H04N19/103 , H04N19/174 , H04N19/70
CPC分类号： H04N19/103 , G06T9/004 , H04N19/119 , H04N19/174 , H04N19/197 , H04N19/70
摘要： The invention concerns a method and a device for processing images, e.g. for encoding or decoding the images into or from a bitstream, using a palette prediction mode as defined in HEVC SCC. The images are split into hierarchical coding structures. At the decoder, the method comprises: decoding encoded data of two self-contained coding structures having the same hierarchical level, using a palette coding mode which uses, for each processed block of the two coding structures, an associated palette that comprises entries associating respective entry indexes with corresponding pixel values, wherein the palette associated with each processed pixel block is predicted from a palette predictor using prediction information from the bitstream;obtaining, from the bitstream, a palette predictor initializer associated with a coding structure hierarchically above the two self-contained coding structures; and initializing the palette predictor for each self-contained coding structure using the same obtained palette predictor initializer.
摘要翻译：本发明涉及用于处理图像的方法和装置，例如，用于使用如在HEVC SCC中定义的调色板预测模式来将图像编码或解码成比特流。图像被分割成分层编码结构。在解码器中，该方法包括：使用调色板编码模式对具有相同层级的两个自包含编码结构的编码数据进行解码，该调色板编码模式对于两个编码结构的每个处理块使用相关联的调色板，该调色板包括相关联的条目具有相应像素值的条目索引，其中使用来自所述比特流的预测信息从调色板预测器预测与每个经处理的像素块相关联的调色板;从所述比特流中获取与所述两个自适应像素分层上方的编码结构相关联的调色板预测器初始化器，包含编码结构; 并使用相同的获得的调色板预测器初始化器来初始化每个自包含编码结构的调色板预测器。

7. 发明申请

WO2016055484A1 METHOD AND APPARATUS FOR VECTOR ENCODING IN VIDEO CODING AND DECODING 审中-公开
标题翻译：用于视频编码和解码的矢量编码的方法和装置
公开(公告)号：WO2016055484A1
公开(公告)日：2016-04-14
申请号：PCT/EP2015/073060
申请日：2015-10-06
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： LAROCHE, Guillaume , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/105 , H04N19/593 , H04N19/156 , H04N19/174 , H04N19/436 , H04N19/176
CPC分类号： H04N19/105 , H04N19/156 , H04N19/174 , H04N19/176 , H04N19/436 , H04N19/593
摘要： The present invention concerns a method and a device for encoding or decoding blocks of pixelsin the process of encoding or decoding a video. It concerns more particularly methods to handle parallelization when using INTRA Block Copy mode of HEVC Screen Content extension. It is based on the control of the area available for providing predictor blocks in INTRA Block Copy mode. Accordingly, Accordingly, the implementation is simple in order to allow parallelized process.
摘要翻译：本发明涉及一种在视频编码或解码过程中对像素块进行编码或解码的方法和装置。当使用HEVC屏幕内容扩展的INTRA块复制模式时，它更特别地涉及处理并行化的方法。它是基于可用于在INTRA块复制模式中提供预测块的区域的控制。因此，因此，为了允许并行处理，实现是简单的。

8. 发明申请

WO2015086718A2 METHOD AND APPARATUS FOR ENCODING OR DECODING BLOCKS OF PIXEL 审中-公开
标题翻译：用于编码或解码像素块的方法和装置
公开(公告)号：WO2015086718A2
公开(公告)日：2015-06-18
申请号：PCT/EP2014/077297
申请日：2014-12-10
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： LAROCHE, Guillaume , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/463
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。

9. 发明申请

WO2015086717A2 IMPROVED PALETTE MODE IN HEVC 审中-公开
标题翻译：改进了HEVC中的调色板模式
公开(公告)号：WO2015086717A2
公开(公告)日：2015-06-18
申请号：PCT/EP2014/077296
申请日：2014-12-10
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： LAROCHE, Guillaume , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/50
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：一种用于根据调色板来确定用于编码用于对图像的编码单元进行编码的索引块的索引的编码参数的编码参数的方法，每个索引与形成编码单元的像素中的一个相关，调色板包括与像素值相关联的一组索引。该方法包括： - 基于相应的编码参数，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转义值的索引值，以替换不能生成的索引块的所述索引，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。

10. 发明申请

WO2014106746A1 METHOD AND DEVICE FOR PROCESSING PREDICTION INFORMATION FOR ENCODING AN IMAGE 审中-公开
标题翻译：用于处理编码图像的预测信息的方法和装置
公开(公告)号：WO2014106746A1
公开(公告)日：2014-07-10
申请号：PCT/GB2014/050006
申请日：2014-01-02
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LTD
发明人： EDOUARD, Francois , ONNO, Patrice , GISQUET, Christophe , LAROCHE, Guillaume
IPC分类号： H04N19/187 , H04N19/33 , H04N19/463 , H04N19/11
CPC分类号： H04N19/11 , H04N19/176 , H04N19/187 , H04N19/33 , H04N19/463 , H04N19/593
摘要： A method of providing a mode value representing a prediction mode of at least part of an image to be encoded, the image being composed of a plurality of processing blocks, each processing block being predictable by applying a prediction mode of a plurality M of available prediction modes, the method comprising: determining first data indicative of a first set of n most probable prediction modes, from the plurality M of available prediction modes, for predicting the said at least part of an image; determining, for the case where a most probable prediction mode is not used, second data representative of a second set of prediction modes of the plurality M of available prediction modes wherein the second set of prediction modes comprise a restricted number N of prediction modes of the M available prediction modes, the prediction modes of the second set being selected from the M available prediction modes according to a predefined condition.
摘要翻译：一种提供表示要编码的图像的至少一部分的预测模式的模式值的方法，所述图像由多个处理块组成，每个处理块可通过应用多个可用预测M的预测模式来预测模式，所述方法包括：从所述可用预测模式的多个M中确定指示n个最可能的预测模式的第一组的第一数据，以预测所述至少部分图像; 确定对于不使用最可能的预测模式的情况，表示可用预测模式的多个M的第二组预测模式的第二数据，其中第二组预测模式包括限制数量N的预测模式 M个可用预测模式，根据预定义条件，从M个可用预测模式中选择第二组的预测模式。

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