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11. 发明申请

WO2010136547A1 METHOD AND DEVICE FOR PROCESSING A DIGITAL SIGNAL 审中-公开
标题翻译：用于处理数字信号的方法和装置
公开(公告)号：WO2010136547A1
公开(公告)日：2010-12-02
申请号：PCT/EP2010/057367
申请日：2010-05-27
申请人： CANON KABUSHIKI KAISHA , HENRY, Félix , GISQUET, Christophe , COROUGE, Isabelle
发明人： HENRY, Félix , GISQUET, Christophe , COROUGE, Isabelle
IPC分类号： H04N7/46
CPC分类号： H04N19/117 , H04N19/119 , H04N19/147 , H04N19/192 , H04N19/46 , H04N19/59
摘要： A method for processing a digital signal comprises receiving an output encoded signal (S d , s c ) obtained from an original digital signal (S i ) having an initial spatial resolution and an initial bit rate, the output encoded signal having a bitrate lower than the initial bitrate, processing the output encoded signal to obtain a source signal (S v ) having the initial spatial resolution, and dividing (E303) samples of the source signal into at least two subsets of samples, the subsets corresponding respectively to different spatial grids that are arranged so that at least some samples of one subset are interleaved spatially with at least some samples of another said subset. Further, for each said subset, the method comprises determining (E305, E309, E311 ), for at least one sample of the subset, at least one filter amongst a set of predetermined filters according to a first predetermined criterion and finally inserting (E310) in a side information signal information representative of the filter(s) determined for the samples of the subset concerned. The method is suitable for encoding an original digital signal into an output encoded signal and a side information signal, the original digital signal having an initial resolution and an initial bitrate.
摘要翻译：一种用于处理数字信号的方法包括接收从具有初始空间分辨率和初始比特率的原始数字信号（Si）获得的输出编码信号（Sd，sc），该输出编码信号具有比初始比特率低的比特率处理输出编码信号以获得具有初始空间分辨率的源信号（Sv），并且将源信号的样本（E303）分割为至少两个样本子集，子集分别对应于排列为不同的空间网格一个子集的至少一些样本与另一个所述子集的至少一些样本在空间上进行交织。此外，对于每个所述子集，所述方法包括针对所述子集的至少一个样本确定（E305，E309，E311）根据第一预定标准的一组预定滤波器中的至少一个滤波器，并最终插入（E310）在表示针对所涉及的子集的样本确定的滤波器的侧信息信号信息中。该方法适用于将原始数字信号编码为输出编码信号和侧信息信号，原始数字信号具有初始分辨率和初始比特率。

12. 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。

13. 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。

14. 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）。

15. 发明申请

WO2011030304A1 METHOD AND DEVICE FOR CODING A MULTI DIMENSIONAL DIGITAL SIGNAL 审中-公开
标题翻译：用于编码多维数字信号的方法和装置
公开(公告)号：WO2011030304A1
公开(公告)日：2011-03-17
申请号：PCT/IB2010/054078
申请日：2010-09-09
申请人： CANON KABUSHIKI KAISHA , HENRY, Félix , GISQUET, Christophe , COROUGE, Isabelle
发明人： HENRY, Félix , GISQUET, Christophe , COROUGE, Isabelle
IPC分类号： H04N7/26
CPC分类号： H04N19/635 , H04N19/11 , H04N19/117 , H04N19/122 , H04N19/14 , H04N19/147 , H04N19/172 , H04N19/46 , H04N19/463
摘要： The present invention relates to a method and a device for coding a multidimensional signal (LL 0 ) comprising samples to form a coded stream (FC), such as an image or a multimedia content. The method comprises: - filtering (E102) original samples by applying a first filter (F, G) to obtain filtered samples (L1) - coding (E172) said filtered samples to obtain coded filtered samples adapted to be decoded by a decoder into decoded filtered samples, - applying (E106) a lossy modification on the filtered samples to obtain modified samples (L 1dec ); - determining (E110, E130, E150) a geometric orientation of one second filter (F', G') to be applied by the decoder to a decoded filtered sample, the determining being based on the modified samples, the original samples and a predetermined criterion, and - providing (E174) said determined geometric orientations and said coded filtered samples to the decoder.
摘要翻译：本发明涉及一种用于对包含样本的多维信号（LL0）进行编码以形成诸如图像或多媒体内容的编码流（FC）的方法和装置。该方法包括： - 通过应用第一滤波器（F，G）对原始样本进行滤波（E102），以获得滤波样本（L1） - 编码（E172）所述滤波后的样本，以获得编码的滤波样本，其被适配成由解码器解码成解码过滤的样品， - 对过滤的样品施加（E106）有损修饰以获得修饰的样品（L1dec）; - 确定（E110，E130，E150）要由解码器施加到解码过滤样本的一秒滤波器（F'，G'）的几何取向，所述确定基于修改后的样本，原始样本和预定并且将（E174）所述确定的几何取向和所述经编码的滤波样本提供给解码器。

16. 发明申请

WO2020002117A2 METHODS AND DEVICES FOR PERFORMING SAMPLE ADAPTIVE OFFSET (SAO) FILTERING 审中-公开
公开(公告)号：WO2020002117A2
公开(公告)日：2020-01-02
申请号：PCT/EP2019/066320
申请日：2019-06-20
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LIMITED
发明人： LAROCHE, Guillaume , TAQUET, Jonathan , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/80 , H04N19/86
摘要： The present invention relates to methods for improving the coding efficiency of images subjected to the SAO filtering. According to a first aspect of the invention, there is provided a method of performing sample adaptive offset (SAO) filtering on an image comprising a plurality of image parts, the method comprising: obtaining an edge offset to perform a SAO filtering; applying an edge offset classification to at least one pixel of the image using a predetermined sign method for determining an index of the edge offset; wherein the predetermined sign method is signalled in the bitstream. Correspondingly, there is provided a method of providing an edge offset to perfom a sample adaptive offset (SAO) filtering on an image, the method comprising: computing an edge offset to perform the SAO filtering; selecting a sign method among a plurality of possible sign methods for determining an index of the edge offset; and signalling the selected sign method in the bitstream thereby allowing the edge offset classification to be performed according to the selected sign method.

17. 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。

18. 发明申请

WO2019234001A1 VIDEO CODING AND DECODING 审中-公开
公开(公告)号：WO2019234001A1
公开(公告)日：2019-12-12
申请号：PCT/EP2019/064458
申请日：2019-06-04
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LIMITED
发明人： LAROCHE, Guillaume , TAQUET, Jonathan , GISQUET, Christophe , ONNO, Patrice
IPC分类号： H04N19/82 , H04N19/86 , H04N19/174 , H04N19/117 , H04N19/46
摘要： It is proposed a method of signalling in a bitstream, a Sample Adaptive Offset (SAO) filtering on an image, the image comprising a plurality of image parts, the image parts being grouped into a plurality of groups. The method comprises: determining whether an image part is of a predetermined group, and if the image part is of the predetermined group, then including in the bitstream a first syntax element, for signalling that SAO parameters for performing SAO filtering on the image part are inferred from SAO parameters used for filtering another image part, else not including the first syntax element.

19. 发明申请

WO2019162414A1 NEW SAMPLE SETS AND NEW DOWN-SAMPLING SCHEMES FOR LINEAR COMPONENT SAMPLE PREDICTION 审中-公开
公开(公告)号：WO2019162414A1
公开(公告)日：2019-08-29
申请号：PCT/EP2019/054377
申请日：2019-02-21
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LIMITED
发明人： ONNO, Patrice , GISQUET, Christophe , LAROCHE, Guillaume , TAQUET, Jonathan
IPC分类号： H04N19/50 , H04N19/42 , H04N19/186 , H04N19/156
摘要： The disclosure regards cross-component prediction and methods for deriving of a linear model for obtaining a first-component sample for a first- component block from an associated reconstructed second-component sample of a second-component block in the same frame, the method comprising determining the parameters of a linear equation representing a straight line passing through two points, each point being defined by two variables, the first variable corresponding to a second-component sample value, the second variable corresponding to a first-component sample value, based on reconstructed samples of both the first-component and the second-component; and deriving the linear model defined by the straight line parameters; wherein said determining the parameters uses integer arithmetic.

20. 发明申请

WO2019002136A1 METHOD AND APPARATUS FOR ENCODING OR DECODING VIDEO DATA IN FRUC MODE WITH REDUCED MEMORY ACCESSES 审中-公开
公开(公告)号：WO2019002136A1
公开(公告)日：2019-01-03
申请号：PCT/EP2018/066786
申请日：2018-06-22
申请人： CANON KABUSHIKI KAISHA , CANON EUROPE LIMITED
发明人： LAROCHE, Guillaume , ONNO, Patrice , TAQUET, Jonathan , GISQUET, Christophe
IPC分类号： H04N19/433 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/513
摘要： The present disclosure concerns a method and a device for encoding or decoding video data. It concerns more particularly the encoding according to a particular encoding mode using a decoder side motion vector derivation mode referenced as frame-rate up conversion mode or FRUC mode. It concerns encoding and decoding improvement which reduce the need for memory accesses when using an encoding mode where the motion information is predicted using a decoder side motion vector derivation method.

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