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1.发明授权公开(公告)号：US08537904B2
公开(公告)日：2013-09-17
申请号：US11630071
申请日：2005-06-22
IPC分类号： H04N7/12
CPC分类号： G06T5/30 , H04N19/117 , H04N19/14 , H04N19/182 , H04N19/85
摘要： The invention relates to a method of processing an image of a video image sequence, wherein it comprises the following successive steps: a step for computing a complexity value representative of the complexity of said image; a first step of morphological processing applied on said image, said first step generating a first processed image; a second step for mixing said image and said first processed image depending on said complexity value, said second step generating a mixed image; a third step of morphological processing applied on said mixed image, said third step generating a second processed image; and a fourth step for mixing said mixed image and said second processed image depending on said complexity value.
摘要翻译： 本发明涉及一种处理视频图像序列的图像的方法，其中它包括以下连续步骤：计算表示所述图像的复杂度的复杂度值的步骤; 对所述图像应用的形态处理的第一步骤，所述第一步骤生成第一处理图像; 第二步骤，用于根据所述复杂度值混合所述图像和所述第一处理图像，所述第二步骤产生混合图像; 在所述混合图像上应用形态处理的第三步骤，所述第三步骤产生第二处理图像; 以及第四步骤，用于根据所述复杂度值混合所述混合图像和所述第二处理图像。
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2.发明申请公开(公告)号：US20080152021A1
公开(公告)日：2008-06-26
申请号：US11630071
申请日：2005-06-22
IPC分类号： H04N7/12
CPC分类号： G06T5/30 , H04N19/117 , H04N19/14 , H04N19/182 , H04N19/85
摘要： The invention relates to a method of processing an image of a video image sequence, wherein it comprises the following successive steps: a step for computing a complexity value representative of the complexity of said image; a first step of morphological processing applied on said image, said first step generating a first processed image; a second step for mixing said image and said first processed image depending on said complexity value, said second step generating a mixed image; a third step of morphological processing applied on said mixed image, said third step generating a second processed image; and a fourth step for mixing said mixed image and said second processed image depending on said complexity value.
摘要翻译： 本发明涉及一种处理视频图像序列的图像的方法，其中它包括以下连续步骤：计算表示所述图像的复杂度的复杂度值的步骤; 对所述图像应用的形态处理的第一步骤，所述第一步骤生成第一处理图像; 第二步骤，用于根据所述复杂度值混合所述图像和所述第一处理图像，所述第二步骤产生混合图像; 在所述混合图像上应用形态处理的第三步骤，所述第三步骤产生第二处理图像; 以及第四步骤，用于根据所述复杂度值混合所述混合图像和所述第二处理图像。
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公开(公告)号：US20060176958A1
公开(公告)日：2006-08-10
申请号：US11324857
申请日：2006-01-04
CPC分类号： H04N19/115 , H04N19/117 , H04N19/137 , H04N19/14 , H04N19/172 , H04N19/467 , H04N19/503 , H04N19/63 , H04N19/85
摘要： The invention relates to a method and a device for analysing video images. According to the invention the device comprises: means of obtaining the high-frequency components of an image, means of obtaining a high-frequency image on the basis of the said high-frequency components, means of calculating the variance for each pixel of the said high-frequency image, means of associating a coefficient with each pixel of the image as a function of the said variance, the said coefficient being representative of the visual sensitivity of each pixel for the human eye.
摘要翻译： 本发明涉及一种用于分析视频图像的方法和装置。 根据本发明，该装置包括：获得图像的高频分量的装置，基于所述高频分量获得高频图像的装置，计算所述高频分量的每个像素的方差的装置 高频图像是将系数与图像的每个像素相关联的装置，作为所述方差的函数，所述系数表示人眼每个像素的视觉灵敏度。
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4.发明授权Device and method for analysing images by calculating the variance for each pixel of a high-frequency image 有权通过计算高频图像的每个像素的方差来分析图像的装置和方法公开(公告)号：US08437403B2
公开(公告)日：2013-05-07
申请号：US11324857
申请日：2006-01-04
CPC分类号： H04N19/115 , H04N19/117 , H04N19/137 , H04N19/14 , H04N19/172 , H04N19/467 , H04N19/503 , H04N19/63 , H04N19/85
摘要： A method and device for analysing video images by obtaining high frequency components. The device includes means for obtaining high-frequency components of a video image and means for obtaining a high-frequency image on the basis of the high-frequency components. Means for calculating the variance for each pixel of the high-frequency image. Means for associating a coefficient with each pixel of the video image as a function of the variance. The coefficient is representative of the visual sensitivity of each pixel for the human eye. The invention relates to a method and a device for analysing video images.
摘要翻译： 一种通过获得高频分量来分析视频图像的方法和装置。 该装置包括用于获得视频图像的高频分量的装置和用于基于高频分量获得高频图像的装置。 用于计算高频图像的每个像素的方差的装置。 用于将系数与视频图像的每个像素相关联的装置作为方差的函数。 该系数代表人眼每个像素的视觉灵敏度。 本发明涉及一种用于分析视频图像的方法和装置。
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公开(公告)号：US07548277B2
公开(公告)日：2009-06-16
申请号：US10964088
申请日：2004-10-13
IPC分类号： H04N5/217
摘要： The disclosure relates to a device and a method for estimating the noise level of a video signal representing image sequences. The device comprises a movement compensated interpolation means, a recursive filter designed to receive on a first input the output of the recursive filter movement compensated by the movement compensated interpolation means and on a second input the video signal, means of calculating the difference between the video signal and the output of the recursive filter movement compensated by the movement compensated interpolation means. In accordance with the principles of the invention, the device comprises means of estimating the noise level of the video signal according to the difference and a maximum threshold delimiting this difference.
摘要翻译： 本公开涉及一种用于估计表示图像序列的视频信号的噪声电平的装置和方法。 该装置包括移动补偿内插装置，递归滤波器被设计为在第一输入端接收由运动补偿内插装置补偿的递归滤波器运动的输出，并且在第二输入端接收视频信号，计算视频之间的差异的装置 信号和由运动补偿内插装置补偿的递归滤波器运动的输出。 根据本发明的原理，该装置包括根据差异估计视频信号的噪声电平的装置和限定该差异的最大阈值。
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公开(公告)号：US07268835B2
公开(公告)日：2007-09-11
申请号：US10958904
申请日：2004-10-05
IPC分类号： H04N5/00
CPC分类号： H04N5/21
摘要： The disclosure relates to a device and to a method for noise reduction of a video signal. The device is comprised of the following components. A motion-compensated interpolation means, a recursive filter intended to receive the output of the recursive filter motion-compensated by the interpolation means at a first input, and the video signal at a second input; means for calculating the difference between the video signal and the output of the recursive filter motion-compensated by the interpolation means; wherein the device includes means for providing the first input of the recursive filter either with the video signal if the difference is greater than a predetermined noise level threshold, or the motion-compensated output of the recursive filter, if the difference is less than the said predetermined noise level threshold.
摘要翻译： 本公开涉及一种用于视频信号的降噪的装置和方法。 该设备由以下组件组成。 运动补偿插值装置，用于接收在第一输入处由插值装置运动补偿的递归滤波器的输出的递归滤波器，以及第二输入端的视频信号; 用于计算由所述插值装置运动补偿的所述视频信号与所述递归滤波器的输出之间的差的装置; 其中所述设备包括用于如果所述差异大于预定噪声电平阈值或所述递归滤波器的运动补偿输出，则所述递归滤波器的第一输入或者与所述视频信号相提供的装置，如果所述差值小于所述 预定噪声电平阈值。
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7.发明授权公开(公告)号：US06944230B2
公开(公告)日：2005-09-13
申请号：US10296689
申请日：2001-05-16
CPC分类号： H04N19/86 , H04N19/107 , H04N19/51 , H04N19/61
摘要： The present invention relates to a device and a process for motion-compensated recursive filtering and a corresponding coding system. The device comprises in particular a blockwise motion estimation module [(2)], means [(3)] for determining a recursivity noise level (σrec), a module (4) for calculating a prediction error (ε), a module [(5)] for calculating a recursivity coefficient (α) as a function of the recursivity noise level and of the prediction error, means [(6)] for calculating a motion-compensated image and means of filtering [(7, 8)] producing a weighting, by the recursivity coefficient, of the current input image and of a filtered and motion-compensated image stored previously. The device also comprises means [(3)] for determining an immobility noise level (σimm), and an assembly [(11, 12)] for processing zones constituting partitions of the blocks employed for the motion estimation, zeroing the motion vectors (d) associated with the zones in which the FDs are below a threshold dependent on the immobility noise level.
摘要翻译： 本发明涉及用于运动补偿递归滤波的装置和方法以及相应的编码系统。 该装置特别包括一个用于确定递归噪声电平的装置[（3）]的块状运动估计模块[（2）]，用于计算预测误差的模块（4） （epsilon），用于计算作为递归噪声电平和预测误差的函数的递归系数（α）的模块[（5）]，用于计算运动补偿图像和滤波装置的[（6）] [（7,8）]通过递归系数产生当前输入图像和先前存储的滤波和运动补偿图像的加权。 装置还包括用于确定不动噪声水平的装置[（3）]）和用于处理构成用于运动的块的分区的区域的组件[（11,12）] 估计，与根据不动噪声水平的FD低于阈值的区域相关联的运动矢量（d）归零。
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8.发明授权Device and process for estimating noise level, noise reduction system and coding system comprising such a device 有权用于估计噪声水平的装置和过程，包括这种装置的降噪系统和编码系统公开(公告)号：US07515638B2
公开(公告)日：2009-04-07
申请号：US10487197
申请日：2002-08-06
IPC分类号： H04N7/12
CPC分类号： H04N19/80 , H04N19/105 , H04N19/117 , H04N19/137 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/60 , H04N19/61
摘要： The present invention relates to a device and a process for estimating the noise level of video images before coding. The device comprises in particular means of storage of at least one input image, a blockwise motion estimation module, designed to produce, blockwise, first quantities representative of motion-compensated image variations, on the basis of a current input image and of at least one input image stored previously in the said means of storage, means of estimation of a global noise level for each image as a function of at least certain of the said quantities representative of motion-compensated image variations, The said device comprises means of estimation of a local noise level for each block of the image as a function of second quantities representative of motion-compensated image variations and of the global noise level.
摘要翻译： 本发明涉及一种用于在编码之前估计视频图像的噪声电平的装置和方法。 该装置特别包括存储至少一个输入图像的块状运动估计模块，其被设计为基于当前输入图像和至少一个输出图像生成表示运动补偿图像变化的第一数量的块 预先存储在所述存储装置中的输入图像，作为代表运动补偿图像变化的至少某些所述量的函数，估计每个图像的全局噪声电平的装置。所述装置包括估计 作为表示运动补偿图像变化和全局噪声电平的第二数量的函数的图像的每个块的局部噪声电平。
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公开(公告)号：US07245782B2
公开(公告)日：2007-07-17
申请号：US10433805
申请日：2001-11-23
IPC分类号： G06K9/40
CPC分类号： H04N5/21
摘要： The invention relates to a process, to a device for smoothing dark regions of images and to a coding system. a noise level is associated with each image and a luminance value is associated with each pixel, a threshold value is calculated, at least two values delimiting a smoothing range are defined, for each current pixel, the luminance of the pixel is compared with the said values, if the luminance of the current pixel lies in a smoothing range, the luminance of several pixels in an analysis window is compared with the said values, if the luminance of certain pixels lies in the same range as the value of the luminance of the current pixel, the value of the luminance of the current pixel is modified as a function of the said threshold values.
摘要翻译： 本发明涉及一种用于平滑图像暗区和编码系统的装置的处理。 噪声电平与每个图像相关联，并且亮度值与每个像素相关联，计算阈值，为每个当前像素定义限定平滑范围的至少两个值，将像素的亮度与所述 值，如果当前像素的亮度在平滑范围内，则将分析窗口中的几个像素的亮度与所述值进行比较，如果某些像素的亮度处于与像素的亮度值相同的范围内 当前像素，当前像素的亮度值被修改为所述阈值的函数。
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公开(公告)号：US08611698B2
公开(公告)日：2013-12-17
申请号：US12799946
申请日：2010-05-05
IPC分类号： G06K9/32 , G06K9/20 , G06K9/34 , G09G5/37 , G09G5/00 , H04N5/44 , H04N9/74 , H04N3/223 , H04N1/387 , H04N1/393
CPC分类号： G06T3/0012 , H04N1/3873
摘要： The invention relates to a method for reframing an image according to at least one predefined reframing method to obtain a reframed image for which the format ratio is equal to a target format ratio. The method comprises the following steps for: analyzing the image, selecting the predefined reframing method in a set of at least two reframing methods according to the result of the analysis step, and reframing said image using the selected reframing method. The invention also relates to a device for reframing an image.
摘要翻译： 本发明涉及一种根据至少一种预定义的重构方法来重构图像的方法，以获得格式比等于目标格式比的重构图像。 该方法包括以下步骤：分析图像，根据分析步骤的结果，选择一组至少两个重构方法中的预定义重构方法，并使用所选择的重构方法重构所述图像。 本发明还涉及用于重构图像的装置。
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