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21.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：US08416992B2
公开(公告)日：2013-04-09
申请号：US11795001
申请日：2006-01-10
IPC分类号： G06K9/00
CPC分类号： G06K9/4671 , G06K9/4623 , G06K9/4652 , G06K9/629 , G06T7/262
摘要： Detection of the salient points in an image enable the improvement of further steps such as coding or image indexing, watermarking, video quality estimation. The methods rely on the fact that a model is fully based on the human visual system (HVS) such as the computation of early visual features, and the methods compute a saliency map for video images taking into account motion and the velocity of the eye.
摘要翻译： 检测图像中的突出点使得能够改进进一步的步骤，例如编码或图像索引，水印，视频质量估计。 该方法依赖于一个模型完全基于人类视觉系统（HVS），例如早期视觉特征的计算，并且该方法计算视频图像的显着图，考虑运动和眼睛的速度。
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23.发明授权Method for locally adjusting a quantization step and coding device implementing said method 有权用于本地调整量化步骤的方法和实现所述方法的编码装置公开(公告)号：US08139881B2
公开(公告)日：2012-03-20
申请号：US11887714
申请日：2006-03-16
IPC分类号： G06K9/00
CPC分类号： H04N19/192 , H04N19/124 , H04N19/154 , H04N19/17 , H04N19/179 , H04N19/60
摘要： The invention relates to a method of locally adjusting a quantization step for each region of an image with respect to a setpoint quantization step. The method comprises the steps of: assigning, to said region of interest, a first quantization step, lower than or equal to said setpoint quantization step; determining a second quantization step higher than or equal to said setpoint quantization step and lower than or equal to a third quantization step such that the number of bits required by the region of interest is lower than the number of bits saved on the potential masking region; and assigning, when such a second quantization step exists, said second quantization step to said potential masking region, otherwise assigning said third quantization step to said potential masking region.
摘要翻译： 本发明涉及一种相对于设定点量化步骤对图像的每个区域进行局部调整量化步长的方法。 该方法包括以下步骤：向所述感兴趣区域分配低于或等于所述设定点量化步长的第一量化步长; 确定高于或等于所述设定点量化步长并低于或等于第三量化步长的第二量化步骤，使得所述感兴趣区域所需的位数低于保存在所述电位屏蔽区域上的位数; 以及当存在所述第二量化步骤时，将所述第二量化步骤分配给所述电位屏蔽区域，否则将所述第三量化步长分配给所述电位屏蔽区域。
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24.发明申请Method of Obtaining a Saliency Map From a Plurality Of Saliency Maps Created From Visual Quantities 有权从视觉数量创建的多个显着性图中获取显着图的方法公开(公告)号：US20090110269A1
公开(公告)日：2009-04-30
申请号：US11988262
申请日：2006-07-05
CPC分类号： G06K9/4671 , G06K9/4623 , G06K9/629 , G06T5/50
摘要： The invention relates to a method of obtaining a saliency map from a plurality of saliency maps created from different visual quantities, comprising - a step for normalizing said saliency maps based on the theoretical maximum of each visual quantity, -an intra-map competition step selecting the main saliency areas in each saliency map, -an inter-map competition step based on the sum of the intra-map competitions with an inter-map redundancy term that is a function of the product of the intra-map competitions and of the probability of a site appearing on said saliency maps.
摘要翻译： 本发明涉及一种从不同视觉量产生的多个显着性图中获得显着图的方法，包括： - 根据每个视觉量的理论最大值对所述显着图进行归一化的步骤， - 在地图内竞争步骤选择 每个显着性图中的主要显着区域， - 基于地图内竞争的总和与映射内冗余项之间的地图间竞赛步骤，该地图间冗余项是地图内竞赛的乘积和概率的函数 显示在所述显着图上的网站。
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25.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：US08200045B2
公开(公告)日：2012-06-12
申请号：US12012668
申请日：2008-02-05
CPC分类号： G06T3/0012 , G06K9/42 , G06T2207/20132
摘要： The invention relates to an image processing method to generate, from a source image, an image of reduced size whose ratio between the width and the height is equal to a predetermined value, called reduced ratio. It comprises the following steps: selecting one rectangular image part in the source image, and extracting the rectangular image part to generate the reduced image. According to an essential characteristic of the method, if the ratio between the width and height of the rectangular image part, called first ratio, is not equal to the reduced ratio, the width or the height of the rectangular image part is modified before the extraction step according to values of perceptual interest associated with each pixel of the source image in such a manner that the ratio between the width and the height of the modified rectangular image part, called second ratio, is equal to the reduced ratio.
摘要翻译： 本发明涉及一种图像处理方法，用于从源图像生成称为缩小比率的宽度与高度之比等于预定值的尺寸缩小的图像。 它包括以下步骤：在源图像中选择一个矩形图像部分，并提取矩形图像部分以生成缩小图像。 根据该方法的基本特征，如果称为第一比例的矩形图像部分的宽度和高度之比不等于缩小比率，则在提取之前修改矩形图像部分的宽度或高度 根据与源图像的每个像素相关联的感知兴趣的值，按照被称为第二比率的修改的矩形图像部分的宽度和高度之间的比率等于缩小比例来进行步长。
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公开(公告)号：US07853076B2
公开(公告)日：2010-12-14
申请号：US10583673
申请日：2004-12-14
IPC分类号： G06K9/00
CPC分类号： G06K9/4623 , G06K9/4652 , G06K9/4671 , G06T5/003 , G06T7/262 , G06T2207/10024
摘要： The invention concerns a device and a method for creating a saliency map of an image. It comprises the steps of: Projection of said image according to the luminance component and if said image is a color image, according to the luminance component and according to the chrominance components, Perceptual sub-bands decomposition of said components according to the visibility threshold of a human eye, Extraction of the salient elements of the sub-bands related to the luminance component, Contour enhancement of said salient elements in each sub-band related to the luminance component, Calculation of a saliency map from the contour enhancement, for each sub-band related to the luminance component. Creation of the saliency map as a function of the saliency maps obtained for each sub-band.
摘要翻译： 本发明涉及用于创建图像的显着图的装置和方法。 它包括以下步骤：根据亮度分量投影所述图像，如果所述图像是彩色图像，则根据亮度分量并根据色度分量，根据可见度阈值对所述分量的感知子带分解 人眼，与亮度分量相关的子带的突出元素的提取，与亮度分量相关的每个子带中的所述突出元素的轮廓增强，从轮廓增强计算显着图，对于每个子 与亮度分量相关的带。 创建显着性图作为每个子带获得的显着性图的函数。
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29.发明申请Method for Locally Adjusting a Quantization Step and Coding Device Implementing Said Method 有权本地调整量化步骤的方法和实现所述方法的编码装置公开(公告)号：US20090122862A1
公开(公告)日：2009-05-14
申请号：US11887714
申请日：2006-03-16
IPC分类号： H04N7/12
CPC分类号： H04N19/192 , H04N19/124 , H04N19/154 , H04N19/17 , H04N19/179 , H04N19/60
摘要： The invention relates to a method of locally adjusting a quantization step for each region of an image with respect to a setpoint quantization step. The method comprises the steps of: assigning, to said region of interest, a first quantization step, lower than or equal to said setpoint quantization step; determining a second quantization step higher than or equal to said setpoint quantization step and lower than or equal to a third quantization step such that the number of bits required by the region of interest is lower than the number of bits saved on the potential masking region; and assigning, when such a second quantization step exists, said second quantization step to said potential masking region, otherwise assigning said third quantization step to said potential masking region.
摘要翻译： 本发明涉及一种相对于设定点量化步骤对图像的每个区域进行局部调整量化步长的方法。 该方法包括以下步骤：向所述感兴趣区域分配低于或等于所述设定点量化步长的第一量化步长; 确定高于或等于所述设定点量化步长并低于或等于第三量化步长的第二量化步骤，使得所述感兴趣区域所需的位数低于保存在所述电位屏蔽区域上的位数; 以及当存在所述第二量化步骤时，将所述第二量化步骤分配给所述电位屏蔽区域，否则将所述第三量化步长分配给所述电位屏蔽区域。
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公开(公告)号：US07379604B2
公开(公告)日：2008-05-27
申请号：US10488920
申请日：2002-08-22
CPC分类号： H04N19/87 , H04N19/107 , H04N19/114 , H04N19/142 , H04N19/177 , H04N19/179 , H04N19/61 , H04N19/80 , H04N19/82
摘要： A device and a method for coding video images by motion compensation. The device incorporates a coding unit and a filtering unit. A calculation unit for calculating a recursivity coefficient as a function of an estimated noise level and a prediction error, a measurement unit for measuring the intra-image correlation and the inter-image correlation, a selection unit for selecting a type of coding applied to the current input image as a function at least of the measurements of the inter-image correlation and of the measurements of the intra-image correlation and as a function of the estimated noise level, a coding unit for coding the current input image as a function of the type of coding selected.
摘要翻译： 一种通过运动补偿对视频图像进行编码的装置和方法。 该装置包括编码单元和滤波单元。 一种用于计算作为估计噪声电平和预测误差的函数的递归系数的计算单元，用于测量图像内相关性和图像间相关性的测量单元，选择单元，用于选择应用于 当前输入图像至少作为图像间相关性的测量和图像内相关性的测量和作为估计的噪声电平的函数的函数，编码单元，用于将当前输入图像编码为 选择的编码类型。
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