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公开(公告)号：US07295764B2
公开(公告)日：2007-11-13
申请号：US10177729
申请日：2002-06-20
申请人： Giorgio Betti , Angelo Dati , Viviana D'Alto , Danilo Pau , Filippo Santinello
发明人： Giorgio Betti , Angelo Dati , Viviana D'Alto , Danilo Pau , Filippo Santinello
IPC分类号： H04N7/26
CPC分类号： H04N19/00266 , H04N19/157 , H04N19/172 , H04N19/61
摘要： A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.
摘要翻译： 特别是以MPEG格式存储并包括不同帧流的数据文件的方法包括基于存储在数据文件中的参数的数据文件的保护系统。 有利地，存储方法包括通过存储与其值被选择的相应不同帧相关联的参数来选择性地保护帧，以提供终端用户请求的播放质量等级。 此外，提供了一种用于对数据文件进行解码的方法，特别是MPEG类型的数据文件，并且包括不同帧的流程，其中数据文件存储在上面。
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2.发明授权Method for reducing echoes in television equalizer video signals and apparatus therefor 失效用于减少电视均衡器视频信号中的回波的方法及其装置
公开(公告)号：US5512959A
公开(公告)日：1996-04-30
申请号：US255436
申请日：1994-06-08
CPC分类号： H04N5/211
摘要： An adaptive method for suppressing video signal echoes in television equalizers including digital filters having coefficients which are updated in an adaptive and iterative manner using a modified LMS (Least Mean Square) algorithm until the difference, or output error, between a target output signal, called the reference signal, and an outgoing signal from the equalizer is gradually reduced. The method includes the steps of:--applying a "combing" technique to an original filter having K*N coefficients in order to select K comb filters having N coefficients each;--applying said LMS algorithm, with a variable convergence factor to each individual comb filter for a predetermined number of iterations;--gathering the resultant configurations of the comb filter coefficients and selecting a subfilter with N largest modulo coefficients therefrom;--updating the values of said N coefficients again by reiterating the LMS algorithm with variable convergence factor to said subfilter for a limited number of iterations;--clearing all the coefficients with a lower modulo value than a predetermined threshold value;--selecting a group of F coefficients by a slotting operation across those of said coefficients which have a cluster value: and--updating the value of said group of F coefficients, by reiterating the LMS algorithm with variable convergence factor, until the output error becomes smaller than a predetermined value.
摘要翻译： 一种用于抑制电视均衡器中的视频信号回波的自适应方法，其包括具有使用修正的LMS（最小均方根）算法以自适应和迭代方式更新的系数的数字滤波器，直到目标输出信号 参考信号和来自均衡器的输出信号逐渐减小。 该方法包括以下步骤：将“梳理”技术应用于具有K * N个系数的原始滤波器，以便选择每个具有N个系数的K个梳状滤波器; 将具有可变收敛因子的所述LMS算法应用于每个单独梳状滤波器以进行预定次数的迭代; - 梳状滤波器系数的结果配置，并从中选择具有N个最大模数系数的子滤波器; 通过在有限数量的迭代中重复具有可变收敛因子的LMS算法来再次对所述N个系数的值进行重新设置; - 清除具有比预定阈值低的模数值的所有系数; 通过对具有簇值的所述系数的开槽操作选择一组F系数，并且通过重复具有可变收敛因子的LMS算法来更新所述F系数组的值，直到输出误差变小 超过预定值。
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公开(公告)号：US5680179A
公开(公告)日：1997-10-21
申请号：US534000
申请日：1995-09-27
CPC分类号： H04N9/646 , H04N5/21 , H03H2222/02
摘要： A device for filtering video images, of the type which includes first and second circuit portions, each having first and second input terminals respectively adapted to receive digitalized luminance and chrominance components of a television signal, and an output terminal coinciding with an output terminal of the device. The first and second circuit portions further include first, second and third filters, cascade coupled to one another, and a fourth filter, respectively. The first, second and third filters incorporate a computational circuit which uses a logic of the fuzzy type to process the digitalized luminance component. The fourth filter includes a computational circuit which processes the digitalized chrominance components based upon a parameter supplied from the second filter.
摘要翻译： 一种用于对包括第一和第二电路部分的类型的视频图像进行滤波的装置，每个具有分别适于接收电视信号的数字化亮度和色度分量的第一和第二输入端子，以及与输出端子重合的输出端子 设备。 第一和第二电路部分还包括分别彼此耦合的级联和第四滤波器的第一，第二和第三滤波器。 第一，第二和第三滤波器包括使用模糊类型的逻辑来处理数字化亮度分量的计算电路。 第四滤波器包括基于从第二滤波器提供的参数来处理数字化色度分量的计算电路。
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公开(公告)号：US08867625B2
公开(公告)日：2014-10-21
申请号：US11983602
申请日：2007-11-09
申请人： Giorgio Betti , Angelo Dati , Viviana D'Alto , Danilo Pau , Filippo Santinello
发明人： Giorgio Betti , Angelo Dati , Viviana D'Alto , Danilo Pau , Filippo Santinello
IPC分类号： H04N7/18 , H04N19/157 , H04N19/61 , H04N19/172
CPC分类号： H04N19/00266 , H04N19/157 , H04N19/172 , H04N19/61
摘要： A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.
摘要翻译： 特别是以MPEG格式存储并包括不同帧流的数据文件的方法包括基于存储在数据文件中的参数的数据文件的保护系统。 有利地，存储方法包括通过存储与其值被选择的相应不同帧相关联的参数来选择性地保护帧，以提供终端用户请求的播放质量等级。 此外，提供了一种用于对数据文件进行解码的方法，特别是MPEG类型的数据文件，并且包括不同帧的流程，其中数据文件存储在上面。
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公开(公告)号：US20080063375A1
公开(公告)日：2008-03-13
申请号：US11983602
申请日：2007-11-09
申请人： Giorgio Betti , Angelo Dati , Viviana D'Alto , Danilo Pau , Filippo Santinello
发明人： Giorgio Betti , Angelo Dati , Viviana D'Alto , Danilo Pau , Filippo Santinello
IPC分类号： H04N7/26
CPC分类号： H04N19/00266 , H04N19/157 , H04N19/172 , H04N19/61
摘要： A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.
摘要翻译： 特别是以MPEG格式存储并包括不同帧流的数据文件的方法包括基于存储在数据文件中的参数的数据文件的保护系统。 有利地，存储方法包括通过存储与其值被选择的相应不同帧相关联的参数来选择性地保护帧，以提供终端用户请求的播放质量等级。 此外，提供了一种用于对数据文件进行解码的方法，特别是MPEG类型的数据文件，并且包括不同帧的流程，其中数据文件存储在上面。
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公开(公告)号：US06256414B1
公开(公告)日：2001-07-03
申请号：US09067443
申请日：1998-04-28
IPC分类号： G06K936
CPC分类号： H04N1/40 , H04N2101/00
摘要： A digital photography apparatus, particularly a digital still camera, includes circuit portions for acquiring a digital image, and for obtaining a compressed image. The apparatus also includes a memory for storing the compressed image. A processor is provided for obtaining a processed image and corresponding processing parameters from the image acquired. The processor supplies as an output, in a first operative condition, the processed image to be compressed by the compression circuit portion. In a second operative condition, the processor supplies as an output the image acquired to be compressed by the compression portion and the processing parameters to be stored in the memory.
摘要翻译： 数字摄影装置，特别是数字静态照相机，包括用于获取数字图像的电路部分，并且用于获得压缩图像。 该装置还包括用于存储压缩图像的存储器。 提供了一种处理器，用于从所获取的图像中获得经处理的图像和相应的处理参数。 处理器在第一操作条件下提供要由压缩电路部分压缩的经处理的图像作为输出。 在第二操作条件下，处理器作为输出获取被压缩部分压缩的图像和要存储在存储器中的处理参数。
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公开(公告)号：US06240211B1
公开(公告)日：2001-05-29
申请号：US09059879
申请日：1998-04-14
IPC分类号： G06K936
CPC分类号： H04N7/0132 , H04N5/145 , H04N7/014
摘要： A method and a device for motion estimated and compensated Field Rate Up-conversion (FRU) for video applications is disclosed and claimed. The invention provides for dividing an image field to be interpolated into a plurality of image blocks, where each image block includes a respective set of image elements of the image field. In one embodiment, for each image block of a subset of image blocks, a group of neighboring image blocks is selected. A motion vector for the image block is estimated that describes the movement of the image block from a previous image field to a current image field on the basis of predictor motion vectors associated to the group of neighboring image blocks. Each image element of the image block is determined by interpolation of two corresponding image elements in the previous and current image fields related by the estimated motion vector. To estimate a motion vector, the invention provides for applying each of the predictor motion vectors to the image block to determine a respective pair of corresponding image blocks in the previous and current image fields. For each of the pairs of corresponding image blocks, an error function which is the Sum of luminance Absolute Difference (SAD) between corresponding image elements in the pair of corresponding image blocks is evaluated. For each pair of the predictor motion vectors, a degree of homogeneity is also evaluated, followed by the application of a fuzzy rule having an activation level that is proportional to the degree of homogeneity of the pair of predictor motion vectors and the error functions of the pair of predictor motion vectors. An optimum fuzzy rule having the highest activation level is selected, from which the best predictor motion vector is determined, having the smaller error function of the pair associated to the optimum fuzzy rule. In most cases, the motion vector for the image block is estimated on the basis of the best predictor motion vector.
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8.发明授权公开(公告)号：US06175657B1
公开(公告)日：2001-01-16
申请号：US09073236
申请日：1998-05-07
IPC分类号： G06K940
CPC分类号： G06T5/20
摘要： The level of Gaussian noise in a memory field being scanned by rows is reduced by reconstructing each pixel by fuzzy logic processors. The processors process the values of pixels neighboring the pixel being processed and belonging to a processing window defined by the last scanned row and the row being scanned, thus minimizing the memory requirement of the filtering system to a single row. The system performs an adaptive filtering within the current field itself and does not produce “edge-smoothing” effects as in prior adaptive filtering systems operating on consecutive fields.
摘要翻译： 通过用模糊逻辑处理器重建每个像素来减少由行扫描的存储器场中的高斯噪声的水平。 处理器处理与正在处理的像素相邻的像素的值，并且属于由最后扫描的行和被扫描的行定义的处理窗口，从而将过滤系统的存储器需求最小化到单个行。 系统在当前字段本身内执行自适应滤波，并且不产生像在连续字段上操作的现有自适应滤波系统中的“边缘平滑”效应。
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9.发明授权
公开(公告)号：US5936682A
公开(公告)日：1999-08-10
申请号：US889691
申请日：1997-07-07
申请人： Joseph Thomas , Viviana D'Alto , Massimo Mancuso
发明人： Joseph Thomas , Viviana D'Alto , Massimo Mancuso
CPC分类号： H04N9/646
摘要： A circuit for enhancing chrominance transitions in a received chrominance video signal comprises a linear-phase digital filter supplied with an input stream of discrete chromatic image elements. The filter also has a high-pass transfer characteristic in a region of the frequency spectrum corresponding to an upper limit of a transmitted chrominance signal bandwidth for enhancing high-frequency components of the received chrominance signal. The circuit additionally includes non-linear digital post-processing circuitry which accepts as input an output of the filter and the input stream of discrete chromatic image elements. The non-linear post-processing circuitry acts on the output of the filter to eliminate distortions introduced in the received chrominance signal by the filter. The post-processing circuitry then detects if the received chrominance signal contains a transition pattern corresponding to predetermined patterns. If the chrominance signal matches one of the predetermined patterns, the filter is bypassed and the output of the circuit is equal to the received chrominance signal.
摘要翻译： 用于增强接收的色度视频信号中的色度转换的电路包括提供有离散彩色图像元素的输入流的线性相位数字滤波器。 该滤波器还具有对应于所发送的色度信号带宽的上限的频谱的区域中的高通传送特性，用于增强接收的色度信号的高频分量。 该电路还包括非线性数字后处理电路，其接收滤波器的输出和离散彩色图像元素的输入流。 非线性后处理电路作用于滤波器的输出，以消除由滤波器在接收的色度信号中引入的失真。 后处理电路然后检测接收到的色度信号是否包含与预定图案对应的过渡图案。 如果色度信号匹配预定图案之一，则滤波器被旁路，并且电路的输出等于接收的色度信号。
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