专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

WO2012095465A1 VIDEO ENCODING AND DECODING WITH IMPROVED ERROR RESILIENCE 审中-公开
标题翻译：视频编码和解码与改进的错误恢复
公开(公告)号：WO2012095465A1
公开(公告)日：2012-07-19
申请号：PCT/EP2012/050390
申请日：2012-01-11
申请人： CANON KABUSHIKI KAISHA , GISQUET, Christophe , LAROCHE, Guillaume
发明人： GISQUET, Christophe , LAROCHE, Guillaume
IPC分类号： H04N7/64 , H04N7/26 , H04N7/36
CPC分类号： H04N19/139 , H04N19/103 , H04N19/176 , H04N19/192 , H04N19/46 , H04N19/52 , H04N19/65 , H04N19/89
摘要： A sequence of digital images is encoded into a bitstream, at least one portion of an image being encoded by motion compensation with respect to a reference image portion. A target number (Nmax) of motion information predictors is obtained. Using the target number a set of motion information predictors is generated having controlled diversity. A motion information predictor for the image portion to encode is selected from the generated set of motion information predictors. The target number is signaled in the bitstream, together with information relating to the selected motion information predictor.
摘要翻译：数字图像序列被编码成比特流，图像的至少一部分通过相对于参考图像部分的运动补偿进行编码。获得运动信息预测器的目标数（Nmax）。使用目标号码生成具有受控分集的一组运动信息预测器。从所生成的运动信息预测器集中选择用于编码图像部分的运动信息预测器。目标号码与比特流中的信号一起，以及与所选运动信息预测器有关的信息。

42. 发明申请

WO2012089773A1 VIDEO ENCODING AND DECODING WITH IMPROVED ERROR RESILIENCE 审中-公开
标题翻译：视频编码和解码与改进的错误恢复
公开(公告)号：WO2012089773A1
公开(公告)日：2012-07-05
申请号：PCT/EP2011/074174
申请日：2011-12-28
申请人： CANON KABUSHIKI KAISHA , LAROCHE, Guillaume , GISQUET, Christophe
发明人： LAROCHE, Guillaume , GISQUET, Christophe
IPC分类号： H04N7/26 , H04N7/36 , H04N7/64
CPC分类号： H04N19/00587 , H04N19/139 , H04N19/157 , H04N19/166 , H04N19/46 , H04N19/51 , H04N19/52 , H04N19/67 , H04N19/89
摘要： A sequence of digital images is encoded into a plurality of encoding units. An image portion is encoded by motion compensation with respect to a reference image portion indicated by an item of motion information. A motion information predictor is determined among a set of motion information predictors and the item of motion information is encoded with respect to the motion information predictor. It is determined to encode the motion information predictors of an encoding unit using either a first encoding mode, which provides encoded data efficiently compressed but not parseable by a decoder in case of losses in the bitstream, or a second encoding mode which provides encoded data less efficiently compressed but systematically parseable by a decoder even in case of losses in the bitstream.
摘要翻译：数字图像序列被编码成多个编码单元。相对于由运动信息项指示的参考图像部分，通过运动补偿编码图像部分。在一组运动信息预测器中确定运动信息预测器，并且相对于运动信息预测器对运动信息项进行编码。确定使用第一编码模式对编码单元的运动信息预测变量进行编码，该第一编码模式在比特流中的丢失的情况下提供被解码器有效压缩但不可解码的编码数据，或者提供编码数据较少的第二编码模式即使在比特流中的损失的情况下，也可以由解码器有效地压缩但可以系统地解析。

43. 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。

44. 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。

45. 发明申请

WO2012175646A1 METHOD AND DEVICE FOR PROCESSING COLOUR INFORMATION IN AN IMAGE 审中-公开
标题翻译：用于处理图像中的颜色信息的方法和装置
公开(公告)号：WO2012175646A1
公开(公告)日：2012-12-27
申请号：PCT/EP2012/062039
申请日：2012-06-21
申请人： CANON KABUSHIKI KAISHA , GISQUET, Christophe , FRANCOIS, Edouard
发明人： GISQUET, Christophe , FRANCOIS, Edouard
IPC分类号： H04N7/26 , H04N7/46
CPC分类号： H04N19/59 , H04N19/105 , H04N19/117 , H04N19/147 , H04N19/186 , H04N19/46 , H04N19/70
摘要： A method of and processing device for processing colour information in an image, the image being composed of at least one first colour component and at least one second colour component, wherein samples of the first colour component and the at least one second colour component are arranged according to a colour sampling format, and wherein samples of the at least one second colour component are predictable from samples of the first colour component, the method comprising: providing colour information representative of the colour sampling format; determining, based on the provided colour information, a prediction process for predicting samples of the at least one second colour component from samples of the first colour component and performing the determined prediction process on samples of the first colour component to predict samples of the at least one second colour component.
摘要翻译：一种用于处理图像中的颜色信息的装置的处理装置，所述图像由至少一个第一颜色分量和至少一个第二颜色分量组成，其中所述第一颜色分量和所述至少一个第二颜色分量的采样被布置根据颜色采样格式，并且其中所述至少一个第二颜色分量的样本可从所述第一颜色分量的样本预测，所述方法包括：提供表示所述颜色采样格式的颜色信息; 基于所提供的颜色信息，确定用于从所述第一颜色分量的样本预测所述至少一个第二颜色分量的样本的预测处理，并且对所述第一颜色分量的样本执行所确定的预测处理，以预测所述至少一个一秒钟的颜色成分。

46. 发明申请

WO2011036653A1 METHODS AND DEVICES FOR FILTERING AND CODING A DIGITAL SIGNAL 审中-公开
标题翻译：用于过滤和编码数字信号的方法和设备
公开(公告)号：WO2011036653A1
公开(公告)日：2011-03-31
申请号：PCT/IB2010/054360
申请日：2010-09-28
申请人： CANON KABUSHIKI KAISHA , GISQUET, Christophe , HENRY, Félix
发明人： GISQUET, Christophe , HENRY, Félix
IPC分类号： H04N7/26
CPC分类号： H04N19/86 , H04N19/117 , H04N19/147 , H04N19/177 , H04N19/182 , H04N19/192 , H04N19/46
摘要： The method of filtering at least one group of at least one sample of a digital signal comprises a step of initializing current values of coefficients associated with each filter support, and, for at least two iterations, for each group of samples: - for each sample, determining a filter support, - filtering the samples in the group with this filter support and the current coefficients, - for each filter support: ○ obtaining, among the samples, a subgroup of samples corresponding to the filter support, and ○ determining optimal values of the coefficients of the filter associated with said support according to a predetermined criterion, each iteration, as from the second, using as current values of coefficients the optimal values of coefficients of the previous iteration.
摘要翻译：对数字信号的至少一组至少一个采样进行滤波的方法包括初始化与每个滤波器支持相关联的系数的电流值的步骤，对于每组采样的至少两次迭代： - 对于每个采样，确定滤波器支持， - 使用此滤波器支持和当前系数对组中的采样进行滤波， - 对于每个滤波器支持：？在样本中获得与过滤器支撑相对应的子样本组，根据预定标准确定与所述支持相关联的滤波器的系数的最佳值，从第二次开始，每次迭代使用系数的当前值作为先前迭代的系数的最优值。

47. 发明申请

WO2007105118A2 A METHOD AND DEVICE FOR ADAPTING A TEMPORAL FREQUENCY OF A SEQUENCE OF VIDEO IMAGES 审中-公开
标题翻译：用于适应视频图像序列的时间频率的方法和装置
公开(公告)号：WO2007105118A2
公开(公告)日：2007-09-20
申请号：PCT/IB2007/001768
申请日：2007-03-09
申请人： CANON KABUSHIKI KAISHA , LE FLOCH, Hervé , GISQUET, Christophe
发明人： LE FLOCH, Hervé , GISQUET, Christophe
CPC分类号： H04N19/132 , H04N7/0135 , H04N19/154 , H04N19/156 , H04N19/164 , H04N19/172 , H04N19/587 , H04N19/61
摘要： The invention concerns a method of adapting a temporal frequency of a sequence of video images for the purpose of its transmission over a communication network, characterized in that images of the sequence having been sampled at a temporal frequency f 1 . The method and device for adapting a temporal frequency of a sequence of video images, the method comprises a step of deciding as to the carrying out of a step of simulating a coding of images of the video sequence sampled at a temporal frequency f 2 > f 1 , for the purpose of determining whether the sampling temporal frequency fa method and device for adapting a temporal frequency f 1 of the sequence can be increased, the decision being taken on the basis of at least one criterion (409; 513) relative to the resources of a communication apparatus able to perform the simulation step (412; 516) and/or on the basis of the evolution over time of the characteristics of the video sequence and/or of the network (512, 515).
摘要翻译：本发明涉及一种适于通过通信网络传输视频图像序列的时间频率的方法，其特征在于，序列的图像以时间频率f 1采样，。用于调整视频图像序列的时间频率的方法和装置，该方法包括以下步骤：确定执行以时间频率f 1采样的视频序列的图像的编码的步骤，为了确定采样时间频率fa方法和用于调整序列的时间频率f 1> 1的装置是否可以增加的目的基于能够执行模拟步骤（412; 516）的通信装置的资源和/或基于随时间推移的演进的至少一个标准（409; 513）来执行该决定视频序列和/或网络的特征（512,515）。

48. 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。

49. 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。

50. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式