公开(公告)号：US06580758B1

公开(公告)日：2003-06-17

申请号：US08137189

申请日：1994-03-14

申请人： Christophe Chevance ,  Dominique Thoreau

发明人： Christophe Chevance ,  Dominique Thoreau

IPC分类号： H04N718

CPC分类号： H04N19/98 ,  H04N19/593 ,  H04N19/61 ,  H04N19/82

摘要： A method and apparatus for differential coding of blocks of images includes coding the difference between a current block of an image to be transmitted and one of four blocks of the reconstructed current image in the closest vicinity of the current block. The device includes a differential image coding structure having a quantifier coupled to a variable-length coding device, a predictor and a device for reconstruction of the transmitted image coupled to a first image memory. The device further includes a second image memory for storing image blocks previously reconstructed in the image preceding the current image.

摘要翻译： 用于图像块的差分编码的方法和装置包括对要发送的图像的当前块与当前块最接近的重构的当前图像的四个块中的一个之间的差进行编码。 该装置包括差分图像编码结构，其具有耦合到可变长度编码装置的量化器，预测器和用于重建耦合到第一图像存储器的发射图像的装置。 该装置还包括第二图像存储器，用于存储先前在当前图像之前的图像中重构的图像块。

公开(公告)号：US20080137740A1

公开(公告)日：2008-06-12

申请号：US11982947

申请日：2007-11-06

申请人： Dominique Thoreau ,  Michel Cosmao ,  Christophe Chevance

发明人： Dominique Thoreau ,  Michel Cosmao ,  Christophe Chevance

IPC分类号： H04N7/26

CPC分类号： H04N19/112 ,  H04N19/122 ,  H04N19/176 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61

摘要： The method is characterized in that, if the data relating to a first macroblock indicates that it is coded in frame prediction and field DCT mode, it comprises the following steps: determination of the second macroblock in the image which, with the first, forms a supermacroblock, each of the macroblocks having an associated MPEG2 inter-frame motion vector, V0 and V1, structuring of the macroblock in field mode and calculation of a partitioning of this supermacroblock according to the MPEG2 motion vectors V0 and V1, calculation of the motion vectors for each of the partitions according to the MPEG2 motion vectors V0 and V1.

摘要翻译： 该方法的特征在于，如果与第一宏块有关的数据指示它在帧预测和场DCT模式中被编码，则其包括以下步骤：确定图像中的第二宏块，其中第一宏块首先形成 超宏块，每个宏块具有相关联的MPEG2帧间运动向量V 0和V 1，在场模式中构造宏块并计算这个 根据MPEG2运动矢量V 0和V 1的超级宏块根据MPEG2运动矢量V 0 <0>计算每个分区的运动矢量， SUB＆gt;和V 1＆lt; 1＆gt ;.

公开(公告)号：US20150189297A1

公开(公告)日：2015-07-02

申请号：US14348107

申请日：2012-09-04

申请人： Christophe Chevance ,  Philippe Salmon ,  Yannick Olivier

发明人： Christophe Chevance ,  Philippe Salmon ,  Yannick Olivier

IPC分类号： H04N19/196 ,  H04N19/124 ,  H04N19/146 ,  H04N19/176

CPC分类号： H04N19/196 ,  H04N19/124 ,  H04N19/14 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/192 ,  H04N19/61

摘要： Said method comprises using a processing means for quantizing a transform of a residual of an intra-prediction of the image block using a quantization parameter value and encoding the quantized transform, further using a processing means for determining that an already used quantization parameter value and corresponding coding cost are available in a storage means, the already used a quantization parameter value being already used for quantizing of a further image block close resembling the image block or having a same complexity as the image block and using the already used quantization parameter value, the corresponding coding cost and a target bit rate for determining the quantization parameter value. Thus, the quantization parameter value can be determined such that flickering artifacts are avoided.

摘要翻译： 所述方法包括使用处理装置，用于使用量化参数值量化图像块的帧内预测的残差并对其进行编码，进一步使用用于确定已经使用的量化参数值和对应的量化参数值的处理装置 编码成本在存储装置中可用，已经使用的已经使用的量化参数值已被用于量化类似于图像块的附近图像块或具有与图像块相同的复杂度并且使用已经使用的量化参数值， 相应的编码成本和用于确定量化参数值的目标比特率。 因此，可以确定量化参数值，使得避免闪烁的伪像。

公开(公告)号：US5063524A

公开(公告)日：1991-11-05

申请号：US433790

申请日：1989-11-09

申请人： Alain Ferre ,  Christophe Chevance ,  Jean Quignon

发明人： Alain Ferre ,  Christophe Chevance ,  Jean Quignon

IPC分类号： G06T7/20 ,  H04N7/26

CPC分类号： G06T7/206 ,  H04N19/527

摘要： The disclosed method consists in:method for estimating the motion of at least one target in a sequence of images, including: coefficients transformed by the Fourier transform;computing a matrix called a phase correlation matrix, each coefficient of which is equal to the product of a transformed coefficient of a first image, by the conjugate of a homologous transformed coefficient of a second image, divided by the square of the modulus of this product;computing an inverse transformed matrix of the phase correlation matrix, in applying the inverse Fourier transform;searching, among the coefficients of the inverse transformed matrix, for those coefficients having the greatest moduli;then estimating a translation vector for each target and a translation vector of the image background, on the basis of the order of the row and of the order of the column in which there are respectively located the coefficients having these greatest moduli.

摘要翻译： 所公开的方法包括：用于估计图像序列中的至少一个目标的运动的方法，包括：通过傅立叶变换变换的系数; 计算一个称为相位相关矩阵的矩阵，其每个系数等于第一图像的变换系数的乘积，乘以第二图像的同源变换系数的乘积除以该乘积的模数的平方 ; 在应用傅里叶逆变换时，计算相位相关矩阵的逆变换矩阵; 在逆变换矩阵的系数中搜索具有最大模数的系数; 然后根据其中分别具有这些最大模数的系数的列和顺序的顺序来估计每个目标的平移向量和图像背景的平移向量。