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：US08654843B2

公开(公告)日：2014-02-18

申请号：US11871640

申请日：2007-10-12

申请人： Patrice Onno ,  Xavier Henocq ,  Fabrice Le Leannec

发明人： Patrice Onno ,  Xavier Henocq ,  Fabrice Le Leannec

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/114 ,  H04N19/137 ,  H04N19/159 ,  H04N19/162 ,  H04N19/17 ,  H04N19/172 ,  H04N19/177 ,  H04N19/597 ,  H04N19/61

摘要： The present invention concerns a method of coding a plurality of digital image signals in a bitstream, said signals each corresponding to a view of a scene, the said coding method comprising the use of a pre-determined predictive coding structure, the views being associated with input views in the coding structure. The coding method according to the invention comprises, for at least one pair of views of the scene, steps of determining a spatial intersection zone (E44) and of calculating a value representing the similarity between the signals corresponding to said views (E45), according to at least some of the signals contained in said spatial intersection zone. These steps are followed by a step of associating (E46) at least one view with an input view of the predictive coding structure according to at least one calculated similarity value. The invention applies both to fixed image signals and to image sequences.

摘要翻译： 本发明涉及一种在比特流中编码多个数字图像信号的方法，所述信号各自对应于场景的视图，所述编码方法包括使用预定的预测编码结构，所述视图与 在编码结构中输入视图。 根据本发明的编码方法包括对于场景的至少一对视图，确定空间交叉区域（E44）并计算表示对应于所述视图（E45）的信号之间的相似度的值的步骤，根据 至少包含在所述空间交叉区域中的一些信号。 这些步骤之后是根据至少一个计算的相似度值将（E46）至少一个视图与预测编码结构的输入视图相关联的步骤。 本发明既适用于固定图像信号又适用于图像序列。

公开(公告)号：US08482758B2

公开(公告)日：2013-07-09

申请号：US11655804

申请日：2007-01-19

申请人： Patrice Onno ,  Fabrice Le Leannec

发明人： Patrice Onno ,  Fabrice Le Leannec

IPC分类号： G06F3/12 ,  G06K15/00 ,  G06K9/36

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/42 ,  H04N19/426 ,  H04N19/61 ,  H04N19/63

摘要： The method of processing a sequence of digital images, in the context of coding according to a bit stream comprising compressed output images organized according to at least two temporal hierarchy levels in accordance with a predetermined scalable format, comprises the following steps: obtaining and storing original images, and generating output images, by the transformation of original images and/or intermediate images, and/or output images, in a first chosen order so that the number of images to be stored, simultaneously necessary for the transformation of the original images into output images, is minimal.

摘要翻译： 根据根据预定可伸缩格式根据至少两个时间层次级别组织的压缩输出图像的比特流在编码的上下文中处理数字图像序列的方法包括以下步骤：获得和存储原始 图像，以及通过原始图像和/或中间图像的变换和/或输出图像以第一选择的顺序产生输出图像，使得要存储的图像的数量同时对于将原始图像变换为 输出图像，是最小的。

公开(公告)号：US08392803B2

公开(公告)日：2013-03-05

申请号：US12697925

申请日：2010-02-01

申请人： Xavier Henocq ,  Fabrice Le Leannec ,  Patrice Onno

发明人： Xavier Henocq ,  Fabrice Le Leannec ,  Patrice Onno

IPC分类号： H03M13/00

CPC分类号： H04N19/31 ,  H04N19/33 ,  H04N19/44

摘要： To identify data losses in a video sequence transmitted between a server and at least one client over a communication network, the sequence comprising a plurality of video data containers coded using scalable video coding employing a predetermined number of hierarchical levels, the video data containers being transmitted over the network via a series of data transport packets: a process (311) is carried out of detecting losses and of locating the video data affected by those losses, without decoding the video data, by combining information coming from transport packets and information coming from video data container headers.Application for improving decoding on receiving a video sequence.

摘要翻译： 为了识别通过通信网络在服务器和至少一个客户端之间传输的视频序列中的数据丢失，该序列包括使用预定数量的分层级别的可分级视频编码编码的多个视频数据容器，传输的视频数据容器 通过一系列数据传输分组在网络上进行：通过组合来自传输分组的信息和来自...的信息来检测损失并定位受这些损失影响的视频数据，而不对视频数据进行解码，处理（311） 视频数据容器标题。 用于改善接收视频序列的解码的应用。

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：US08340179B2

公开(公告)日：2012-12-25

申请号：US11688679

申请日：2007-03-20

申请人： Fabrice Le Leannec ,  Xavier Henocq ,  Patrice Onno

发明人： Fabrice Le Leannec ,  Xavier Henocq ,  Patrice Onno

IPC分类号： H04N11/02

CPC分类号： H04N19/36 ,  H04N19/124 ,  H04N19/176 ,  H04N19/187 ,  H04N19/34 ,  H04N19/61

摘要： The method of scalable coding of moving images using at least one reference image for at least one image to code, comprises, at least on passing, for a so-called “current” image, from an initial quality level to an intended quality level different from the initial quality level: a step (705) of coding the current image as far as the intended quality level to provide a coded current image, a step (710) of reconstructing the current image at the intended quality level to provide a reconstructed current image of intended quality level, a step (715) of obtaining at least one reference image of the current image at the initial quality level, to provide a prediction image for the initial quality level, a step (720, 725) of determining a differential texture refinement depending on the prediction image for the initial quality level and on the reconstructed current image of intended quality level and a step (730) of coding the differential texture refinement.

摘要翻译： 使用至少一个图像编码的至少一个参考图像来对运动图像进行可缩放编码的方法包括至少在所谓的当前图像上从最初的质量水平到不同于 初始质量水平：将当前图像编码为目标质量水平以提供编码的当前图像的步骤（705）;以预期质量水平重构当前图像以提供重建的当前图像的步骤（710） 在步骤（715）中，获取初始质量水平的当前图像的至少一个参考图像，以提供用于初始质量水平的预测图像;确定差分纹理细化的步骤（720,725） 取决于初始质量水平的预测图像和预期质量水平的重构的当前图像以及编码差分纹理细化的步骤（730）。

公开(公告)号：US20110013538A1

公开(公告)日：2011-01-20

申请号：US12837542

申请日：2010-07-16

申请人： Xavier Henocq ,  Fabrice Le Leannec ,  Patrice Onno

发明人： Xavier Henocq ,  Fabrice Le Leannec ,  Patrice Onno

IPC分类号： H04L12/26

CPC分类号： H04N21/44209 ,  H04L43/0894 ,  H04N19/33 ,  H04N19/34 ,  H04N19/70 ,  H04N21/234327 ,  H04N21/4621 ,  H04N21/6405

摘要： The invention in particular concerns a method and a device for estimating a level of use of a communication network linking a server and at least one client, said communication network being used to transmit a data stream at a transmission rate corresponding to the temporal frequency of said data stream, said data stream comprising at least one item of information characterizing a theoretical rate dependent on said transmission rate of said data stream. After having obtained (121) said theoretical rate of said data stream, the real reception rate of at least one part of said data stream is evaluated (109). Said theoretical rate and said evaluated rate are then compared (113) to estimate said level of use of said communication network. The level of subscription of a client to multicast sessions may be adapted according to the level of use of the communication network.

摘要翻译： 本发明特别涉及一种用于估计链接服务器和至少一个客户端的通信网络的使用水平的方法和设备，所述通信网络用于以与所述服务器的时间频率对应的传输速率发送数据流 数据流，所述数据流包括表征理论速率的至少一项信息，所述理论速率取决于所述数据流的所述传输速率。 在获得（121）所述数据流的理论速率之后，评估所述数据流的至少一部分的实际接收速率（109）。 然后将所述理论速率和所述评估速率进行比较（113）以估计所述通信网络的所述使用水平。 可以根据通信网络的使用级别来调整客户端到组播会话的订阅级别。