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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：US6034741A
公开(公告)日：2000-03-07
申请号：US558596
申请日：1995-10-30
CPC分类号： G06T5/20 , H03H2222/02
摘要： A filter performs a reduction of pulsed noise in video images in accordance with fuzzy logic. An interface circuit of the filter receives consecutive digital signals in time corresponding to the video images and generates an image window having a digital signal to be processed at the center. The filter also has a comparator block, a plurality of digital subtractors, and a memory circuit connected in cascade to the comparator block. The filter also has a filtering circuit that organizes values of digital signals of the video image, and an arithmetic block that performs a switch between the digital signal to be processed and the output of the filtering circuit on the basis of the values taken by the parameter.
摘要翻译： 滤波器根据模糊逻辑执行视频图像中的脉冲噪声的降低。 滤波器的接口电路在对应于视频图像的时间中接收连续的数字信号，并产生具有要在中心处理的数字信号的图像窗口。 滤波器还具有比较器块，多个数字减法器和与比较器块级联连接的存储器电路。 滤波器还具有组合视频图像的数字信号的值的滤波电路，以及基于由参数取得的值执行要处理的数字信号和滤波电路的输出之间的切换的运算块 。
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3.发明授权Fuzzy logic filter for reducing noise and sharpening edges of digital image signals 失效模糊逻辑滤波器，用于减少数字图像信号的噪声和锐化边缘
公开(公告)号：US5757977A
公开(公告)日：1998-05-26
申请号：US396212
申请日：1995-02-28
CPC分类号： G06T5/20 , H03H2222/02
摘要： A filter achieving noise reduction and digital signal image edge enhancement includes two noise reduction circuits designed to enhance an image edge. The noise reduction circuits comprise both comparison units, which receive separate digital signals of an image and an inferential circuit connected to said comparison elements. Each inferential circuit uses a fuzzy logic unit designed to define activation levels based on signals generated by the comparison elements. The filter also includes a noise detection circuit and an image edge detection circuit both connected to the noise reduction circuit and designed to perform operations in accordance with fuzzy logic rules on the basis of the activation levels defined in the inferential circuits. The filter also includes a noise reduction circuit connected to the noise detection circuit and is designed to filter the digital image signals on the basis of the operations performed by the noise detection circuit. The filter additionally includes an image edge enhancement circuit connected to the noise reduction circuit and to the image edge detection circuit and is designed to perform on filtered digital image signals image edge enhancement on the basis of the operations performed by the image edge detection circuit.
摘要翻译： 实现噪声降低和数字信号图像边缘增强的滤波器包括设计用于增强图像边缘的两个降噪电路。 噪声降低电路包括两个比较单元，它们接收图像的单独数字信号和连接到所述比较元件的推理电路。 每个推理电路使用一个模糊逻辑单元，设计用于基于比较元件产生的信号定义激活电平。 滤波器还包括噪声检测电路和图像边缘检测电路，两者均连接到降噪电路，并被设计为基于在推导电路中定义的激活电平来根据模糊逻辑规则执行操作。 滤波器还包括连接到噪声检测电路的噪声降低电路，并且被设计为基于由噪声检测电路执行的操作来对数字图像信号进行滤波。 滤波器还包括连接到噪声降低电路和图像边缘检测电路的图像边缘增强电路，并且被设计为基于由图像边缘检测电路执行的操作对滤波的数字图像信号图像边缘增强执行。
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4.发明授权Fuzzy logic based filter architecture for video applications and corresponding filtering method 失效用于视频应用的基于模糊逻辑的滤波器架构和相应的滤波方法
公开(公告)号：US5659370A
公开(公告)日：1997-08-19
申请号：US427081
申请日：1995-04-21
CPC分类号： H04N7/012 , H04N5/21 , H04N7/0132 , H04N9/646 , H03H2222/02 , Y10S706/90
摘要： A filter architecture for high-resolution video applications of the type comprising at least one filter block having a plurality of digital inputs which receive through an interface components of a television signal and some outputs through which to take the result of a filtering operation for noise associated with the television signal also comprises in the filter block at least one interpolator block connected to said inputs and operating with fuzzy logic to execute a television signal scanning conversion to be presented on additional outputs of the filter block.
摘要翻译： 一种用于高分辨率视频应用的滤波器架构，其包括具有多个数字输入的至少一个滤波器块，所述多个数字输入通过接口的电路信号和一些输出的接收部分接收，以获得噪声相关联的滤波操作的结果 电视信号还在滤波器块中还包括连接到所述输入的至少一个内插器块，并且以模糊逻辑运行以执行要在滤波器块的附加输出上呈现的电视信号扫描转换。
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5.发明授权
公开(公告)号：US5870495A
公开(公告)日：1999-02-09
申请号：US584529
申请日：1996-01-11
CPC分类号： G06K9/4633
摘要： A method for recognizing geometric shapes in an image using fuzzy logic. The method includes determining an edge in the image and a gradient of the edge. The gradient is corrected by virtue of a first fuzzy logic process, and the number of points that belong to the curve are determined by virtue of a second fuzzy logic process. A fuzzy device for the recognition of geometric shapes in images that implementing the method includes an edge detector, a fuzzy gradient corrector to correct the gradient, and a fuzzy vote attributor to determine the number of points that belong to the curve.
摘要翻译： 一种使用模糊逻辑识别图像中几何形状的方法。 该方法包括确定图像中的边缘和边缘的梯度。 通过第一模糊逻辑过程校正梯度，并且通过第二模糊逻辑过程来确定属于该曲线的点的数量。 用于识别实现该方法的图像中的几何形状的模糊装置包括边缘检测器，用于校正梯度的模糊梯度校正器和用于确定属于该曲线的点数的模糊投票属性。
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公开(公告)号：US5621474A
公开(公告)日：1997-04-15
申请号：US345512
申请日：1994-11-28
CPC分类号： G06T5/002 , G06T5/20 , G06T2207/10016 , H03H2222/02
摘要： A filter acting on digital image signals for apparatus of the video type includes at least first and second processing units adapted to elect an image edge, each processing unit includes an inferential circuit operating on fuzzy logic, which has first and second input terminals and an output terminal, and first and second comparison elements each having first and second input terminals and an output terminal, the input terminals being intended for receiving discrete digital signals of an image. The output terminals of the first and second comparison elements in the first processing unit are respectively connected to the first and second input terminals of the inferential circuit included in the first processing unit, and the output terminals of the first and second comparison elements in the second processing unit are respectively connected to the first and second input terminals of the inferential circuit included in the second processing unit.
摘要翻译： 作为视频类型的装置的数字图像信号的滤波器至少包括适于选择图像边缘的第一和第二处理单元，每个处理单元包括在模糊逻辑上工作的推理电路，该模糊逻辑具有第一和第二输入端子以及输出 端子以及分别具有第一和第二输入端子和输出端子的第一和第二比较元件，输入端子用于接收图像的离散数字信号。 第一处理单元中的第一和第二比较元件的输出端子分别连接到包括在第一处理单元中的推理电路的第一和第二输入端子，第二处理单元中的第一和第二比较元件的输出端子 处理单元分别连接到包括在第二处理单元中的推理电路的第一和第二输入端。
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公开(公告)号：US5619271A
公开(公告)日：1997-04-08
申请号：US427082
申请日：1995-04-21
CPC分类号： H04N7/012 , H04N7/0132
摘要： A television signal scanning conversion device of the type comprising at least one filtering block having a plurality of digital inputs which receive through an interface components of an interlaced television signal comprises also at lease one calculation block connected to the signal inputs and operating with fuzzy logic. The calculation block is capable of executing a switch between at least two different interpolation procedures, to wit interfield and intrafield.
摘要翻译： 一种电视信号扫描转换装置，其类型包括至少一个具有多个数字输入的滤波块，该多个数字输入通过接口的隔行扫描电视信号的分量接收，还包括至少一个计算块，其连接到信号输入并用模糊逻辑运行。 计算块能够在至少两个不同的插值程序之间执行切换，即在场间和场内。
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公开(公告)号：US5748796A
公开(公告)日：1998-05-05
申请号：US519056
申请日：1995-08-24
CPC分类号： G06T5/20
摘要： A fuzzy device for image noise reduction, includes an interface adapted to retrieve the gray level of a pixel to be processed of an image and of neighbouring pixels; a difference circuit connected to the interface and adapted to generate a difference of the gray levels between said neighbouring pixels and said pixels to be processed; a fuzzy flat area smoothing circuit connected to the difference circuit and adapted to perform a low-pass smoothing of an almost homogeneous region defined by said pixel and by said neighbouring pixels; an edge preserving smoothing circuit connected to the difference circuit and adapted to perform low-pass filtering on a high-frequency information region defined by the pixel and by the neighbouring pixels; a region voter circuit connected to the interface and adapted to give a measure for considering whether the region defined by the pixel and the neighbouring pixels is almost homogeneous; and a soft switching circuit connected to the outputs of the smoothing circuit and adapted to perform the weighting of the outputs of the smoothing circuit on the basis of the measure.
摘要翻译： 一种用于图像噪声降低的模糊设备，包括适于检索要处理的图像和相邻像素的像素的灰度级的接口; 连接到所述接口并适于产生所述相邻像素与要处理的像素之间的灰度级差的差分电路; 连接到差分电路的模糊平坦区域平滑电路，并且适于执行由所述像素和所述相邻像素限定的几乎均匀的区域的低通平滑化; 连接到所述差分电路并适于对由所述像素和所述相邻像素定义的高频信息区域执行低通滤波的边缘保持平滑电路; 连接到界面的区域选举电路，并且适于给出用于考虑由像素和相邻像素定义的区域是否几乎是均匀的度量; 以及软切换电路，连接到平滑电路的输出，并且适于基于该测量执行平滑电路的输出的加权。
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公开(公告)号：US5589890A
公开(公告)日：1996-12-31
申请号：US314862
申请日：1994-09-29
CPC分类号： H04N5/20 , H03H2222/02
摘要： A filter architecture particularly for video applications, includes a filter section for separating high pass and low pass components from a video input signal conveying a video image, a brilliance estimating section for determining a mean brilliance value for each of a plurality of sections into which the video image is divided, first and second image characteristic adjusting sections for modifying the high pass and low pass components in response to the mean brilliance values, and a summing section for combining the modified high pass and low pass components to generate a filtered video signal. The first and second image characteristic adjusting sections operate using Fuzzy Logic which enables the filter architecture to effectively adjust contrast and brightness in the video image over a wide range of image brightness values.
摘要翻译： 特别是用于视频应用的滤波器结构包括用于从传送视频图像的视频输入信号中分离高通和低通分量的滤波器部分，用于确定多个部分中的每一个的平均亮度值的光亮度估计部分， 视频图像是用于响应于平均亮度值来修改高通和低通分量的分割的第一和第二图像特征调整部分，以及用于组合经修改的高通和低通分量以产生经滤波的视频信号的求和部分。 第一和第二图像特征调整部分使用模糊逻辑进行操作，其使滤波器结构能够在宽范围的图像亮度值上有效地调整视频图像中的对比度和亮度。
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公开(公告)号：US06332136B1
公开(公告)日：2001-12-18
申请号：US08987357
申请日：1997-12-09
IPC分类号： G06N702
CPC分类号： H03H17/0261 , H03H2222/02
摘要： The fuzzy filtering of a noise signal comprising a plurality of signal samples [s(t,k)] is carried out using as variables the variation of the signal in the considered window and the distance of the samples from a sample to be reconstructed, to distinguish the typical variations of the original signal from those due to the noise and to identify the signal fronts. The method comprises the steps of defining a current signal sample [s(t)] from among the plurality of signal samples, calculating a plurality of difference samples [D(t,k)] as the difference in absolute value between the current signal sample and each signal sample and defining distance values (k) between the current signal sample and each signal sample. The method further comprises determining weight parameters [P(k)] on the basis of the difference samples and the distance values by means of fuzzy logic and weighing the signal samples with the weight parameters so as to obtain a reconstructed signal sample [o(t)].
摘要翻译： 包括多个信号样本[s（t，k）]的噪声信号的模糊滤波使用所考虑的窗口中的信号的变化和样本从待重建的样本的距离变为 将原始信号的典型变化与由于噪声引起的信号进行区分，并识别信号前沿。 该方法包括以下步骤：从多个信号样本中定义当前信号样本[s（t）]，计算多个差分样本[D（t，k）]作为当前信号样本之间的绝对值差 和每个信号样本并定义当前信号样本与每个信号样本之间的距离值（k）。 该方法还包括通过模糊逻辑基于差分样本和距离值确定权重参数[P（k）]，并用权重参数对信号样本进行加权，以便获得重构信号样本[o（t ）]。
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