公开(公告)号：US10306256B2

公开(公告)日：2019-05-28

申请号：US14238821

申请日：2012-08-16

申请人： Guillaume Laroche

发明人： Guillaume Laroche

IPC分类号： H04N19/107 ,  H04N19/52 ,  H04N19/503 ,  H04N19/593 ,  H04N19/44 ,  H04N19/43 ,  H04N19/436

摘要： A method and device for deriving at least one motion information predictor for encoding of an image portion by motion compensation. At least two distinct first and second subsets of motion information predictors of a first set of motion information predictors are provided. Processing of the first subset of motion information predictors and processing of the second subset of motion information predictors is performed to obtain a final set of motion information predictors usable for predicting said image portion from the reference image portion. Processing of the second subset may comprise removing duplicates from among the motion information predictors of said second subset, and may be performed so as to exclude temporal predictors. At least part of the processing of the second subset of motion information predictors may be performed concurrently with at least part of the processing of the first subset of motion information predictors.

公开(公告)号：US10075707B2

公开(公告)日：2018-09-11

申请号：US14003789

申请日：2012-03-08

申请人： Guillaume Laroche ,  Edouard Francois ,  Patrice Onno

发明人： Guillaume Laroche ,  Edouard Francois ,  Patrice Onno

IPC分类号： H04N19/51 ,  H04N19/52 ,  H04N19/139 ,  H04N19/513 ,  H04N19/43

CPC分类号： H04N19/50 ,  H04N19/139 ,  H04N19/43 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52

摘要： Motion vectors of a first reference frame are permitted to point to a plurality of further reference frames. A method of storing the motion vectors comprises, when a block of the first reference frame has two motion vectors initially, selecting one of the two motion vectors, the non-selected motion vector not being stored. The selected motion vector may be scaled. This can reduce the motion vector memory size.

公开(公告)号：US09930332B2

公开(公告)日：2018-03-27

申请号：US14344315

申请日：2012-09-12

申请人： Edouard Francois ,  Guillaume Laroche ,  Patrice Onno

发明人： Edouard Francois ,  Guillaume Laroche ,  Patrice Onno

IPC分类号： H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/196 ,  H04N19/593 ,  H04N19/463 ,  H04N19/52

CPC分类号： H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/52 ,  H04N19/593

摘要： Reference prediction mode values, also referred to as most probable modes, usable for encoding or decoding of a prediction mode related to a current coding unit, are derived. First and second reference prediction mode values are derived (S402) from respective prediction modes of at least two neighboring coding units of the current coding unit. The first and second reference prediction modes are different. A third reference prediction mode value is derived (S403) from the first and second reference prediction mode values. The third reference prediction mode is different from each of said first and second reference prediction mode values.By deriving three MPMs instead of two for comparison with the prediction mode of the current coding block the coding efficiency is improved. This is due to the increase in the probability that the prediction mode of the current coding block corresponds to one of the derived most probable modes.

公开(公告)号：US08824555B2

公开(公告)日：2014-09-02

申请号：US14003564

申请日：2012-03-08

申请人： Guillaume Laroche ,  Patrice Onno

发明人： Guillaume Laroche ,  Patrice Onno

IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N7/50 ,  H04N7/26

CPC分类号： H04N19/503 ,  H04N19/105 ,  H04N19/107 ,  H04N19/139 ,  H04N19/176 ,  H04N19/43 ,  H04N19/46 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61

摘要： A temporal motion vector predictor is includable, together with one or more spatial motion vector predictors, in a set of motion vector predictors for a block to encode of a current frame. A method of determining the temporal motion vector predictor comprises selecting as the temporal predictor one motion vector from among motion vectors in a reference block of a reference frame different from the current frame. The reference block is a block of the reference frame collocated with the block to encode or a block of the reference frame neighboring the collocated block. The selection is based on a diversity criterion for achieving diversity among the predictors of the set.This can reduce the motion vector memory requirements with no or no significant additional coding efficiency penalty. Alternatively, even if the motion vector memory is not reduced in size, coding efficiency improvements can be achieved.

摘要翻译： 时间运动矢量预测器可与一个或多个空间运动矢量预测器一起包含在用于编码当前帧的块的一组运动矢量预测器中。 确定时间运动矢量预测器的方法包括从与当前帧不同的参考帧的参考块中的运动矢量中选择一个运动矢量作为时间预测器。 参考块是与要编码的块并置的参考帧的块或与并置块相邻的参考帧的块。 该选择基于用于在集合的预测器之间实现多样性的分集标准。 这可以减少运动矢量存储器的需求，没有或没有显着的附加编码效率损失。 或者，即使运动矢量存储器的尺寸没有减小，也可以实现编码效率的提高。

公开(公告)号：US20140169476A1

公开(公告)日：2014-06-19

申请号：US14123941

申请日：2012-06-05

申请人： Guillaume Laroche ,  Patrice Onno

发明人： Guillaume Laroche ,  Patrice Onno

IPC分类号： H04N19/503 ,  H04N19/51

CPC分类号： H04N19/105 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/65 ,  H04N19/70 ,  H04N19/89

摘要： A method and device for deriving motion information of an image portion of an image predicted by motion prediction with respect to at least one reference image, the method comprising for said image portion: obtaining a number i of motion information predictors 808 of a second set of motion information predictors 814 taken from a first set of motion information predictors for decoding the image portion; generating said second set of motion information predictors 814 consisting of said number i of motion information predictors, wherein there are no duplicates among the i motion information predictors of said second set. A method and device for of decoding a bitstream, and a method and device for encoding a sequence of image including a method for deriving motion information of an image portion of an image predicted by motion prediction with respect to at least one reference image as described above.

摘要翻译： 一种用于导出关于至少一个参考图像通过运动预测预测的图像的图像部分的运动信息的方法和装置，所述方法包括用于所述图像部分：获得第二组的运动信息预测器808的数量i 运动信息预测器814取自用于解码图像部分的第一组运动信息预测器; 生成由运动信息预测器的所述数量i组成的所述第二组运动信息预测器814，其中在所述第二组的i个运动信息预测器中不存在重复。 一种用于对比特流进行解码的方法和装置，以及用于编码图像序列的方法和装置，所述方法和装置包括用于导出如上所述的关于至少一个参考图像的通过运动预测预测的图像的图像部分的运动信息的方法 。

公开(公告)号：US08731045B2

公开(公告)日：2014-05-20

申请号：US12744544

申请日：2008-11-19

申请人： Joël Jung ,  Guillaume Laroche

发明人： Joël Jung ,  Guillaume Laroche

IPC分类号： H04N19/00 ,  H04N7/26

CPC分类号： H04N19/00 ,  H04N19/44 ,  H04N19/51

摘要： A method is provided for encoding a portion of a current image, including: an estimation of motion between the current image portion and a plurality of candidate image portions in order to form motion components, an evaluation of a performance criterion for each candidate image portion, and the selection of a reference image portion using said performance criteria. In the method, for at least one motion component, the motion estimation, the performance criteria evaluation and the reference image portion selection only use information considered to be available at the decoder and no motion information is inserted into an output flow intended for a decoder. A corresponding decoding method is also provided.

摘要翻译： 提供了一种用于编码当前图像的一部分的方法，包括：对当前图像部分和多个候选图像部分之间的运动的估计，以形成运动分量，评估每个候选图像部分的性能标准， 以及使用所述性能标准来选择参考图像部分。 在该方法中，对于至少一个运动分量，运动估计，性能标准评估和参考图像部分选择仅使用在解码器处认为可用的信息，并且没有运动信息被插入到用于解码器的输出流中。 还提供了相应的解码方法。

公开(公告)号：US20130301734A1

公开(公告)日：2013-11-14

申请号：US13979027

申请日：2012-01-11

申请人： Christophe Gisquet ,  Guillaume Laroche

发明人： Christophe Gisquet ,  Guillaume Laroche

IPC分类号： H04N7/36

CPC分类号： H04N19/105 ,  H04N19/103 ,  H04N19/139 ,  H04N19/176 ,  H04N19/192 ,  H04N19/46 ,  H04N19/51 ,  H04N19/52 ,  H04N19/89

摘要： A target number of motion information predictors to be used for an image portion to encode is obtained. A first set of motion information predictors is obtained each associated with an image portion having a predetermined spatial and/or temporal relationship with the image portion being encoded. Duplicates are eliminated to obtain a reduced set of motion information predictors containing a first number of motion information predictors, each motion information predictor of said reduced set being different from any other motion information predictor of said reduced set. The first number is compared to the target number and, if said first number is lower than said target number, an additional motion information predictor is obtained and added to the reduced set of motion information predictors.

摘要翻译： 获得要用于编码图像部分的目标数量的运动信息预测器。 获得第一组运动信息预测器，其与与正被编码的图像部分具有预定空间和/或时间关系的图像部分相关联。 消除重复以获得包含第一数量的运动信息预测器的减少的运动信息预测器集合，所述缩小集合的每个运动信息预测器与所述缩减集合的任何其他运动信息预测器不同。 将第一个数字与目标数量进行比较，如果所述第一个数字低于所述目标数量，则获得附加的运动信息预测器，并且将其加到运动信息预测器的缩小集合中。

公开(公告)号：US20130287113A1

公开(公告)日：2013-10-31

申请号：US13979008

申请日：2012-01-11

申请人： Christophe Gisquet ,  Guillaume Laroche

发明人： Christophe Gisquet ,  Guillaume Laroche

IPC分类号： H04N7/36

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 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。 获得目标数量的运动信息预测器。 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。

公开(公告)号：US20120327999A1

公开(公告)日：2012-12-27

申请号：US13484137

申请日：2012-05-30

申请人： Edouard FRANCOIS ,  GUILLAUME LAROCHE ,  PATRICE ONNO

发明人： Edouard FRANCOIS ,  GUILLAUME LAROCHE ,  PATRICE ONNO

IPC分类号： H04N7/32

CPC分类号： H04N19/11 ,  H04N19/13

摘要： A method of encoding a mode value representing a prediction mode comprises selecting from among at least first and second encoding processes an encoding process to apply to the mode value to be encoded. The first encoding process comprises encoding first information indicating a predetermined relationship between the mode value to be encoded and at least one predetermined value. The second encoding process comprises encoding second information representing the mode value to be encoded. The encoding by the second encoding process takes account of the outcome of at least one prior first encoding process. This can be achieved by updating mode probabilities based on the outcome of the first, as well as the second, encoding process. Such a method creates a link between the first and second encoding processes and can improve coding efficiency.

摘要翻译： 对表示预测模式的模式值进行编码的方法包括从至少第一和第二编码处理中选择要应用于要编码的模式值的编码处理。 第一编码处理包括编码指示要编码的模式值与至少一个预定值之间的预定关系的第一信息。 第二编码处理包括对表示待编码的模式值的第二信息进行编码。 通过第二编码处理的编码考虑了至少一个先前的第一编码处理的结果。 这可以通过基于第一和第二编码过程的结果更新模式概率来实现。 这种方法创建第一和第二编码处理之间的链接并且可以提高编码效率。

公开(公告)号：US20110194784A1

公开(公告)日：2011-08-11

申请号：US13123304

申请日：2009-10-12

申请人： Guillaume Laroche ,  Joël Jung

发明人： Guillaume Laroche ,  Joël Jung

IPC分类号： G06K9/36

CPC分类号： H04N19/136 ,  H04N19/109 ,  H04N19/11 ,  H04N19/124 ,  H04N19/176 ,  H04N19/523 ,  H04N19/61

摘要： A method is provided for encoding an image or a sequence of images generating a data flow comprising data representing a group of pixels in one of said images, said method including: calculating a predetermined number of predictors in relation to said group of pixels, and selecting an optimal predictor in accordance with a predetermined selection criterion. Between the calculation and selection steps, a step of eliminating at least one predictor with a calculated predetermined number is performed, which comprises, for at least two ith (Pi) and jth (Pj) predictors, of: calculating the difference between said jth and ith predictors, applying a transform to said calculated difference, performing a quantification operation on the result of the applied transform, comparing the result of said quantification operation with a predetermined value, eliminating the jth predictor if the result of said quantification operation is less than or equal to said predetermined value.

摘要翻译： 提供一种用于编码图像或图像序列的方法，所述图像或图像序列生成包括表示所述图像之一中的像素组的数据的数据流，所述方法包括：计算与所述像素组相关的预定数量的预测值，并且选择 根据预定的选择标准的最优预测器。 在计算和选择步骤之间，执行消除具有计算的预定数量的至少一个预测器的步骤，其包括对于至少第二第i（Pi）和第j（Pj）预测器，计算所述第j个和第 第一预测器，对所述计算的差进行变换，对所施加的变换的结果执行量化操作，将所述量化操作的结果与预定值进行比较，消除第j个预测值，如果所述量化操作的结果是小于或等于 等于所述预定值。