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1.发明授权Method and system for processing video signals, for example for displaying on a small sized color display, and corresponding computer program product 有权用于处理视频信号的方法和系统，例如用于在小尺寸彩色显示器上显示以及相应的计算机程序产品公开(公告)号：US07630003B2
公开(公告)日：2009-12-08
申请号：US10732186
申请日：2003-12-10
CPC分类号： H04N5/23293 , H04N9/73
摘要： A method of processing digital video signals produced by a sensor that are to be presented on a viewfinder, the method involving: a first pair of processing operations for scaling and color interpolation; and a second pair of processing operations for the formation of a color matrix and for white balancing. The operations of at least one, and preferably of both of the pairs of processing operations are executed in a single step. The operation of white balancing is moreover performed only for one frame out of K frame in the frame sequence. The preferential application is in the construction of viewfinders for videocameras and digital still cameras.
摘要翻译： 一种处理要呈现在取景器上的由传感器产生的数字视频信号的方法，所述方法涉及：用于缩放和颜色插值的第一对处理操作; 以及用于形成彩色矩阵和用于白平衡的第二对处理操作。 在一个步骤中执行至少一个，优选两个处理操作对的操作。 此外，在帧序列中仅对K帧中的一帧执行白平衡的操作。 优先应用是为视频摄像机和数码相机拍摄取景器。
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公开(公告)号：US20060104531A1
公开(公告)日：2006-05-18
申请号：US11219621
申请日：2005-09-02
申请人： Stewart Smith , Arcangelo Bruna , Filippo Vella
发明人： Stewart Smith , Arcangelo Bruna , Filippo Vella
IPC分类号： G06K9/38
CPC分类号： H04N19/192 , H04N19/115 , H04N19/124 , H04N19/146 , H04N19/15 , H04N19/182
摘要： A method for image compression of a set of image data includes performing a quantization operation on the image data. The quantization operation may include controlling a compression factor by applying a scaled quantization level obtained by multiplying a first quantization level by a gain factor. The gain factor may be updated as a function of a bit per pixel value of a compressed image. The update operation may include an iterative procedure including at least one iteration step that provides for updating a current gain factor as a function of a previous gain used for performing a previous compression step and as a function of a ratio of the bit per pixel value of the compressed image at the previous compression step to a target bit per pixel value. The method may be used in Joint Photographic Experts Group (JPEG) image processing and digital still cameras.
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3.发明申请Method and architecture for compressing image data acquired from a bayer color filter array 有权用于压缩从拜耳滤色器阵列获取的图像数据的方法和架构公开(公告)号：US20060013314A1
公开(公告)日：2006-01-19
申请号：US11146469
申请日：2005-06-07
申请人： Filippo Vella , Arcangelo Bruna , Antonio Buemi
发明人： Filippo Vella , Arcangelo Bruna , Antonio Buemi
CPC分类号： H04N19/119 , H04N19/124 , H04N19/136 , H04N19/17 , H04N19/176 , H04N19/51 , H04N19/94
摘要： For each color channel, the process includes gathering Bayer pattern pixel values by pairs, each pair being composed by two successive pixels belonging to the channel along the scanning direction of the pixels of the image, thus each pair of values representing a current input vector, and calculating a predictor vector of the input vector in terms of the differences between the values defining the input vector and a pair of prediction values generated according to a certain criterion, for representing a prediction error. The process further includes quantizing each so calculated predictor vector according to a heavier or lighter degree of quantization depending on whether the predictor vector is representative of an area of relatively uniform color of the image or of an area of relatively abrupt changes of colors of the image, and generating a multibit code representative of the quantized predictor vector of the input vector according to a certain compression ratio.
摘要翻译： 对于每个颜色通道，该处理包括通过成对地收集拜耳图案像素值，每对由属于沿着图像的像素的扫描方向的通道的两个连续像素组成，因此每对值表示当前输入向量， 以及根据定义输入向量的值和根据某一标准生成的一对预测值之间的差异来计算输入向量的预测矢量，用于表示预测误差。 该过程还包括根据预测矢量是否表示图像的相对均匀的颜色的区域或图像的颜色相对突然变化的区域，根据更重或更轻的量化量化每个所计算的预测矢量 并且根据一定的压缩率生成代表输入向量的量化预测矢量的多位代码。
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公开(公告)号：US08325810B2
公开(公告)日：2012-12-04
申请号：US10462090
申请日：2003-06-13
申请人： Filippo Vella , Massimo Mancuso
发明人： Filippo Vella , Massimo Mancuso
CPC分类号： G06T7/215
摘要： A method of estimating a global motion vector representative of the motion of a first digital image with respect to a second digital image, the first and the second image forming part of a sequence of images and being made up of, respectively, a first and a second pixel matrix. The method estimates the global motion vector on the basis of the estimate of at least one motion vector of at least one region of the first image representative of the motion of the at least one region from the first image to the second image and comprising phases of: subdividing the at least one region of the first image into a plurality of pixel blocks, assigning to each block of the plurality a respective weighting coefficient calculated on the basis of a respective inhomogeneity measure, and estimating the at least one motion vector of said at least one region on the basis of the weighting coefficients assigned to each block of the at least one region.
摘要翻译： 一种估计表示第一数字图像相对于第二数字图像的运动的全局运动矢量的方法，所述第一和第二图像形成图像序列的一部分，并且分别由第一和第二数字图像构成 第二像素矩阵。 该方法基于对从第一图像到第二图像的至少一个区域的运动的第一图像的至少一个区域的至少一个运动矢量的估计来估计全局运动矢量，并且包括 将所述第一图像的至少一个区域细分为多个像素块，向所述多个像素块中的至少一个运动矢量分配所述多个像素块中的所述至少一个运动矢量， 基于分配给所述至少一个区域的每个块的加权系数的至少一个区域。
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5.发明授权Method and architecture for compressing image data acquired from a Bayer color filter array 有权用于压缩从拜耳滤色器阵列获取的图像数据的方法和架构公开(公告)号：US07676082B2
公开(公告)日：2010-03-09
申请号：US11146469
申请日：2005-06-07
CPC分类号： H04N19/119 , H04N19/124 , H04N19/136 , H04N19/17 , H04N19/176 , H04N19/51 , H04N19/94
摘要： For each color channel, the process includes gathering Bayer pattern pixel values by pairs, each pair being composed by two successive pixels belonging to the channel along the scanning direction of the pixels of the image, thus each pair of values representing a current input vector, and calculating a predictor vector of the input vector in terms of the differences between the values defining the input vector and a pair of prediction values generated according to a certain criterion, for representing a prediction error. The process further includes quantizing each so calculated predictor vector according to a heavier or lighter degree of quantization depending on whether the predictor vector is representative of an area of relatively uniform color of the image or of an area of relatively abrupt changes of colors of the image, and generating a multibit code representative of the quantized predictor vector of the input vector according to a certain compression ratio.
摘要翻译： 对于每个颜色通道，该处理包括通过成对地收集拜耳图案像素值，每对由属于沿着图像的像素的扫描方向的通道的两个连续像素组成，因此每对值表示当前输入向量， 以及根据定义输入向量的值和根据某一标准生成的一对预测值之间的差异来计算输入向量的预测矢量，用于表示预测误差。 该过程还包括根据预测矢量是否表示图像的相对均匀的颜色的区域或图像的颜色相对突然变化的区域，根据更重或更轻的量化量化每个所计算的预测矢量 并且根据一定的压缩率生成代表输入向量的量化预测矢量的多位代码。
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6.发明授权公开(公告)号：US07574066B2
公开(公告)日：2009-08-11
申请号：US11219621
申请日：2005-09-02
IPC分类号： G06K9/36
CPC分类号： H04N19/192 , H04N19/115 , H04N19/124 , H04N19/146 , H04N19/15 , H04N19/182
摘要： A method for image compression of a set of image data includes performing a quantization operation on the image data. The quantization operation may include controlling a compression factor by applying a scaled quantization level obtained by multiplying a first quantization level by a gain factor. The gain factor may be updated as a function of a bit per pixel value of a compressed image. The update operation may include an iterative procedure including at least one iteration step that provides for updating a current gain factor as a function of a previous gain used for performing a previous compression step and as a function of a ratio of the bit per pixel value of the compressed image at the previous compression step to a target bit per pixel value. The method may be used in Joint Photographic Experts Group (JPEG) image processing and digital still cameras.
摘要翻译： 一组图像数据的图像压缩方法包括对图像数据执行量化操作。 量化操作可以包括通过应用通过将第一量化电平乘以增益因子而获得的缩放量化电平来控制压缩因子。 增益因子可以作为压缩图像的每像素值的位的函数来更新。 更新操作可以包括迭代过程，该迭代过程包括至少一个迭代步骤，该迭代步骤提供用于根据用于执行先前压缩步骤的先前增益的函数来更新当前增益因子，并且作为每像素值比特的函数 将先前压缩步骤的压缩图像转换为每像素值的目标比特。 该方法可用于联合图像专家组（JPEG）图像处理和数码相机。
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7.发明授权Method and system for processing signals via perceptive vectorial quantization, computer program product therefor 失效用于通过感知向量量化处理信号的方法和系统，其计算机程序产品公开(公告)号：US08023563B2
公开(公告)日：2011-09-20
申请号：US10911205
申请日：2004-08-03
IPC分类号： H04N7/12
CPC分类号： H04N19/59 , H04N19/126 , H04N19/14 , H04N19/176 , H04N19/60 , H04N19/94
摘要： The system carries out conversion of digital video signals organized in blocks of pixels from a first format to a second format. The second format is a format compressed via vector quantization. The vector quantization is performed by means of repeated application of a scalar quantizer to the pixels of said blocks with a quantization step (Q) determined in an adaptive way according to the characteristics of sharpness and/or brightness of the pixels and representing said vector quantization in a n-dimensional space indicative of the characteristics on n of said pixels in the block partitioned into cells of size proportional to said quantization step, each cell being assigned to an appropriate binary code, wherein said process further includes identifying at least one symmetry element in said n-dimensional space suitable for separating at least two symmetrical set of cells, and selecting one of said at least two symmetrical set of cells for the assignment of said binary codes. A symmetrical permutation on the n pixels of the block is performed according the selection and a part of said binary code indicating the status of said symmetrical permutation is conveniently set.
摘要翻译： 系统将以像素块组织的数字视频信号从第一格式转换成第二格式。 第二种格式是通过矢量量化压缩的格式。 通过根据像素的清晰度和/或亮度的特性以自适应方式确定的量化步长（Q），将标量量化器重复施加到所述块的像素，并且表示所述矢量量化 在表示分割成与所述量化步长成比例的大小的单元格中的块中的所述像素的n上的特征的n维空间中，每个单元被分配给适当的二进制代码，其中所述处理还包括识别至少一个对称元素 在适于分离至少两个对称的单元格组的所述n维空间中，并且选择所述至少两个对称的单元格之一用于分配所述二进制码。 根据选择执行对块的n个像素的对称置换，并且方便地设置指示所述对称置换状态的所述二进制码的一部分。
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公开(公告)号：US07852375B2
公开(公告)日：2010-12-14
申请号：US10461934
申请日：2003-06-13
申请人： Filippo Vella , Massimo Mancuso
发明人： Filippo Vella , Massimo Mancuso
CPC分类号： H04N5/23264 , H04N5/145 , H04N5/23248 , H04N5/23254 , H04N19/17 , H04N19/527 , H04N19/55
摘要： A method of stabilizing an image sequence, said method comprising the following phases: estimating a first global motion vector comprising a first motion component in a predetermined direction that has associated with it a first respective amplitude and a first respective direction, said first vector being representative of the motion with respect to a reference image of a first image consisting of a pixel matrix, associating said first component with either a wanted motion or an unwanted motion, compensating said first component when it is associated with an unwanted motion, characterized in that the association phase comprises a phase of comparing the first amplitude of said component with a threshold compensation value T comp hor assigned to the predetermined direction, said first component being associated with an unwanted or wanted motion whenever the first amplitude is, respectively, smaller than said threshold value T comp hor or greater than/equal to it.
摘要翻译： 一种稳定图像序列的方法，所述方法包括以下阶段：估计包括与其相关联的预定方向的第一运动分量的第一全局运动矢量具有第一相应幅度和第一相应方向，所述第一矢量是代表性的 相对于由像素矩阵组成的第一图像的参考图像的运动，其将所述第一分量与想要的运动或不需要的运动相关联，当与所述运动相关联时补偿所述第一分量，其特征在于， 关联阶段包括将所述分量的第一幅度与分配给预定方向的阈值补偿值T comp hor进行比较的相位，每当第一幅度分别小于所述阈值时，所述第一分量与不需要的或想要的运动相关联 值T comp hor或大于/等于它。
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9.发明申请Method and system for processing signals via perceptive vectorial quantization, computer program product therefor 失效用于通过感知向量量化处理信号的方法和系统，其计算机程序产品公开(公告)号：US20050063472A1
公开(公告)日：2005-03-24
申请号：US10911205
申请日：2004-08-03
CPC分类号： H04N19/59 , H04N19/126 , H04N19/14 , H04N19/176 , H04N19/60 , H04N19/94
摘要： The system carries out conversion of digital video signals organized in blocks of pixels from a first format to a second format. The second format is a format compressed via vector quantization. The vector quantization is performed by means of repeated application of a scalar quantizer to the pixels of said blocks with a quantization step (Q) determined in an adaptive way according to the characteristics of sharpness and/or brightness of the pixels and representing said vector quantization in a n-dimensional space indicative of the characteristics on n of said pixels in the block partitioned into cells of size proportional to said quantization step, each cell being assigned to an appropriate binary code, wherein said process further includes identifying at least one symmetry element in said n-dimensional space suitable for separating at least two symmetrical set of cells, and selecting one of said at least two symmetrical set of cells for the assignment of said binary codes. A symmetrical permutation on the n pixels of the block is performed according the selection and a part of said binary code indicating the status of said symmetrical permutation is conveniently set.
摘要翻译： 系统将以像素块组织的数字视频信号从第一格式转换成第二格式。 第二种格式是通过矢量量化压缩的格式。 通过根据像素的清晰度和/或亮度的特性以自适应方式确定的量化步长（Q），将标量量化器重复施加到所述块的像素，并且表示所述矢量量化 在表示分割成与所述量化步长成比例的大小的单元格中的块中的所述像素的n上的特征的n维空间中，每个单元被分配给适当的二进制代码，其中所述处理还包括识别至少一个对称元素 在适于分离至少两个对称的单元格组的所述n维空间中，并且选择所述至少两个对称的单元格之一用于分配所述二进制码。 根据选择执行对块的n个像素的对称置换，并且方便地设置指示所述对称置换状态的所述二进制码的一部分。
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