公开(公告)号：US07149250B2

公开(公告)日：2006-12-12

申请号：US10531027

申请日：2003-10-13

申请人： Marc Drieux ,  Françoise Groliere ,  Daniel Snook

发明人： Marc Drieux ,  Françoise Groliere ,  Daniel Snook

IPC分类号： H04B1/66

CPC分类号： H04N19/114 ,  H04N19/139 ,  H04N19/503 ,  H04N19/61

摘要： The present invention relates to an encoding method processing video object planes (VOPs) of I, P or B type and including a dynamic allocation of said VOPs. According to said method, for each input frame a preliminary forward motion estimation is carried out between current and previous frames. Current and previous motion fields are then used to evaluate a coherence factor, expressed as connected to the sums of local differences within current and previous motion field. According to the value of the coherence factor with respect to an empirically determined threshold, a decision is finally taken on the type of the frame to be coded.

摘要翻译： 本发明涉及一种处理I，P或B类视频对象平面（VOP）的编码方法，包括所述VOP的动态分配。 根据所述方法，对于每个输入帧，在当前帧和先前帧之间执行初步前向运动估计。 然后使用当前和先前的运动场来评估相干因子，表示为与当前运动场和先前运动场中的局部差异之和相关。 根据相干因子相对于经验确定的阈值的值，最终决定要编码的帧的类型。

公开(公告)号：US06442204B1

公开(公告)日：2002-08-27

申请号：US09559896

申请日：2000-04-26

申请人： Daniel Snook ,  Françoise Groliere ,  Jean Gobert

发明人： Daniel Snook ,  Françoise Groliere ,  Jean Gobert

IPC分类号： H04N736

CPC分类号： H04N19/577 ,  H04N19/107 ,  H04N19/114 ,  H04N19/137 ,  H04N19/139 ,  H04N19/142 ,  H04N19/177 ,  H04N19/179 ,  H04N19/61 ,  H04N19/87

摘要： In the Improved PB-frames mode, one of the options of the H.263+ Recommendation, a macroblock of a B-frame may be encoded according to a forward, a backward or a bidirectional prediction mode. The invention relates to a method of encoding a sequence of pictures defining a strategy for the choice of a prediction mode among the three possible ones in the encoding of B-macroblock. This strategy is based upon SAD(Sum of Absolute Difference) calculations and motion vectors coherence and allows to use backward prediction when scene cuts occur. The calculations are here performed on original pictures allowing less calculation and reduction in CPU burden. The invention also relates to an encoding system for carrying out said method and including a computer-readable medium storing instructions that allow the implementation of this method.

摘要翻译： 在改进的PB帧模式中，可以根据前向，后向或双向预测模式对H.263 +建议书的选项之一，B帧的宏块进行编码。 本发明涉及一种对B帧的编码中的三个可能的预测模式的选择策略进行定义的图像序列的编码方法。 该策略基于SAD（绝对差值）计算和运动矢量相干性，并允许在出现场景切换时使用反向预测。 这些计算在原始图片上执行，允许较少的计算和减少CPU负担。 本发明还涉及一种用于执行所述方法并包括存储允许实施该方法的指令的计算机可读介质的编码系统。

公开(公告)号：US07043092B1

公开(公告)日：2006-05-09

申请号：US09500304

申请日：2000-02-08

申请人： Françoise Groliere

发明人： Françoise Groliere

IPC分类号： G06K9/40

CPC分类号： H04N19/527 ,  H04N19/86

摘要： Quantization in video coding is a lossy treatment and has as its main result that blocking artefacts occur at the boundary of two blocks during the decoding process. The invention relates to a method of removing these blocking artefacts. It implements a filtering step in the decoding process applied to a segment of pixels phaddling the boundary, which segment has pixels at the ends (R3, L3) that agree with a chrominance similarity criterion (step 1), i.e. filtering is applied to segments for which the pixels at the ends have similar colors.

摘要翻译： 视频编码中的量化是一种有损的处理，其主要结果是在解码过程中阻塞伪影出现在两个块的边界处。 本发明涉及一种去除这些阻塞伪影的方法。 它在解码过程中实现一个过滤步骤，该过程应用于边界上的像素段，该段具有与色度相似度准则（步骤1）一致的端点处的像素（R 3，L 3），即过滤应用于 端部的像素具有类似颜色的段。

公开(公告)号：US08208559B2

公开(公告)日：2012-06-26

申请号：US11579886

申请日：2005-05-11

申请人： Arnaud Bourge ,  Françoise Groliere ,  Yann Le Maguet

发明人： Arnaud Bourge ,  Françoise Groliere ,  Yann Le Maguet

IPC分类号： H04N11/02

CPC分类号： H04N7/012 ,  H04N19/105 ,  H04N19/112 ,  H04N19/122 ,  H04N19/16 ,  H04N19/428 ,  H04N19/44 ,  H04N19/48 ,  H04N19/51 ,  H04N19/59

摘要： The present invention relates to a method of and a device for decoding a set of encoded frames at a first resolution (SD) so as to produce a set of output frames at a lower resolution (QCIF). Said device comprises: a partial decoding unit (DECp) for producing a first residual error field at a second resolution lower than the first one and a second residual error field at a third resolution lower than the first one based on the encoded frame; —a first predicting unit (PRED1) for producing a first motion-compensated field based on the first residual error field, on a first reference field (Fix1) and on a second reference field (Fix2); a first adder for combining the first residual error field with the first motioncompensated field so as to obtain a next first reference field (Fiy1); —a second predicting unit (PRED2) for producing a second motion-compensated field based on the second residual error field, on the first reference field and on the second reference field; a second adder for combining the second residual error field with the second motioncompensated field so as to obtain a next second reference field (Fiy2), the next second reference field corresponding to an output frame.

摘要翻译： 本发明涉及一种用于以第一分辨率（SD）对一组编码帧进行解码以便以较低分辨率（QCIF）产生一组输出帧的方法和装置。 所述装置包括：部分解码单元（DECp），用于产生低于第一残差误差场的第一残差误差场和低于第一残差误差场的第一残差误差场; - 第一预测单元（PRED1），用于基于第一残差误差场，在第一参考场（Fix1）和第二参考场（Fix2）上产生第一运动补偿场; 第一加法器，用于将第一残差误差场与第一运动补偿场相组合，以获得下一个第一参考场（Fiy1）; - 用于在所述第一参考场和所述第二参考场上基于所述第二残余误差场产生第二运动补偿场的第二预测单元（PRED2） 第二加法器，用于将第二残差误差场与第二运动补偿场相组合，以获得下一个第二参考场（Fiy2），下一个第二参考场与输出帧相对应。

公开(公告)号：US06255026B1

公开(公告)日：2001-07-03

申请号：US09464858

申请日：1999-12-16

申请人： Olivier Kahn ,  Charlotte Jay ,  Jonas Krober ,  Renée Claude ,  Françoise Groliere

发明人： Olivier Kahn ,  Charlotte Jay ,  Jonas Krober ,  Renée Claude ,  Françoise Groliere

IPC分类号： G03C556

CPC分类号： C07F15/025 ,  G02F1/0147 ,  G11B7/0055 ,  G11B7/246 ,  G11B7/249 ,  Y10S430/146 ,  Y10S430/165

摘要： A chemical composition is provided for the manufacture of devices for storing and/or displaying information, comprising a network having a molecule which is formed from a metallic element Fe(II) which is bonded to a 1-2-4 triazole ligand (H-Trz), which molecule further comprises one or more than one anions A selected from BF4−, ClO4−, CO32−, Br−, Cl−, in accordance with the formulation: FeII(H-Trz)3A2, characterized in that this composition is used in the pure state in either one of the two crystalline phases (&agr;,&bgr;) at least one of which, referred to as the second phase (&bgr;), can be thermally induced on the basis of the other phase, referred to as the first phase (&agr;), at a temperature which is equal to or higher than a first reference temperature (To), which phases each show thermally inducible spin transitions between a low-spin state at a low first temperature (T&agr;1, T&bgr;1) and a high-spin state at a high second temperature (T&agr;2, T&bgr;2), the spin transitions which are associated with each phase being accompanied by a similar abrupt change in color of the compound and taking place in accordance with hysteresis cycles at different temperatures of the two phases, wherein the hysteresis cycle (T&agr;1, T&bgr;2) associated with the first phase (&agr;) occurs at a temperature which is higher than a second reference temperature (TR), and the hysteresis cycle (T&bgr;1, T&bgr;2) associated with the second phase (&agr;) occurs at a temperature below the second reference temperature (TR), the first reference temperature (To) being higher than the second reference temperature (TR) and the highest spin-transition temperature (T&agr;2).

摘要翻译： 提供了用于制造用于存储和/或显示信息的装置的化学组成，包括具有分子的网络，所述分子由金属元素Fe（II）形成，所述金属元素Fe（II）与1-2-4三唑配体（H- Trz），该分子还根据配方进一步包含一种或多于一种选自BF 4 - ，ClO 4 - ，CO 32 - ，Br - ，Cl-的阴离子A.其特征在于该组合物以纯态使用 其中至少一个（称为第二相（β））的两个结晶相（α，β）中的一个可以基于被称为第一相（α）的另一相的热诱导 等于或高于第一参考温度（To）的温度，这些相各自显示在低的第一温度（Talpha1，Tbeta1）的低自旋状态和高自旋状态之间的高诱导自旋跃迁 第二温度（Talpha2，Tbeta2），相关联的自旋跃迁 每个相伴随着化合物的颜色类似的突然变化，并且根据两相不同温度下的滞后循环进行，其中与第一相（α）相关的滞后循环（Talpha1，Tbeta2）发生在 高于第二参考温度（TR）的温度和与第二相（α）相关联的滞后周期（Tbeta1，Tbeta2）在低于第二参考温度（TR）的温度下发生，第一参考温度（To ）高于第二参考温度（TR）和最高自旋转变温度（Talpha2）。