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公开(公告)号：US07305141B2
公开(公告)日：2007-12-04
申请号：US10067476
申请日：2002-02-05
摘要： The present invention relates to digital image sensors and in particular to an aliasing free contour filter for RGB Bayer sensors. The filter (ZSB, 7) prevents an amplification of back folded aliasing artefacts and further eliminates green-green differences caused in the green color of the image sensor.
摘要翻译： 本发明涉及数字图像传感器，特别涉及用于RGB拜耳传感器的混叠自由轮廓滤波器。 滤波器（ZSB，7）可防止放大后折叠的伪像，进一步消除图像传感器绿色引起的绿绿色差异。
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公开(公告)号：US07129976B2
公开(公告)日：2006-10-31
申请号：US10431198
申请日：2003-05-07
摘要： A digital image enhancing system for processing pixel contour data comprises a contour filter, means for edge processing and for local noise reduction to reduce the amount of noise in a pixel luminance or color signal (Sin), means to apply a control signal (Ghpf) indicating the gain of a contour signal, and means to apply a control signal (Gcntr) indicating the gain of the contour as a function of local noise in a picture. The means for edge processing and local noise reduction are arranged such that an output signal (Sout) is supplied in response to said input signal (Sin), to a low pass filtered input signal (Slpf) derived therefrom, and to the contour filter output signal (contour) and the above control signals according to the relation: Sout=Gcntr*Ghpf(Sin−Slpf)+Slpf if Gcntr*Ghpf
摘要翻译： 用于处理像素轮廓数据的数字图像增强系统包括轮廓滤波器，用于边缘处理和局部降噪的装置，以减少像素亮度或颜色信号（Sin）中的噪声量，施加控制信号（Ghpf）的装置， 指示轮廓信号的增益，以及将指示轮廓的增益的控制信号（Gcntr）作为图像中的局部噪声的函数施加的装置。 用于边缘处理和局部降噪的装置被布置成使得响应于所述输入信号（Sin）提供输出信号（Sout），以及从其导出的低通滤波输入信号（Slpf）和轮廓滤波器输出 信号（轮廓）和上述控制信号根据以下关系：<？in-line-formula description =“In-line Formulas”end =“lead”？> Sout = Gcntr * Ghpf（Sin-Slpf）+ Slpf if Gcntr * Ghpf <1和<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> Sout = Sin +（Ghpf * Gcntr-1）*轮廓else。<？in-line-formula description =“In-line Formulas”end =“tail”？>
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公开(公告)号：US07123297B2
公开(公告)日：2006-10-17
申请号：US09894085
申请日：2001-06-28
IPC分类号： H04N5/217
CPC分类号： H04N9/045
摘要： A signal processing device for a sensor output signal from a sensor covered by a color mask pattern having a plurality of colors, the signal processing device comprising a reconstruction unit (5) for generating a plurality of color signal values (R, G, B) for each pixel from the sensor output signal; and a clipping device (8) for clipping the sensor output signal or the plurality of color signal values (R, G, B). Preferably, the signal processing device further comprises: a conversion unit (6) for generating luminance signals (Y) and chrominance signals (U, V) from the plurality of color signal values (R, G, B), and an adjustment unit (10) for selectively setting the chrominance signals (U, V) to a zero color difference when clipping is performed (8). Advantageously, the clipping device (8) is arranged between the sensor (3) and the reconstruction unit (5), and the signal processing device further comprises a single bit white clip delay unit (11) for generating a switch signal for the adjustment unit (10), the switch signal comprising an at least 2×2 bit array from, or at least in response to, a signal (SS) from the clipping device (8) indicating that clipping has occurred.
摘要翻译： 一种信号处理装置，用于由具有多种颜色的彩色掩模图案覆盖的传感器的传感器输出信号，所述信号处理装置包括用于产生多个颜色信号值（R，G，B）的重建单元（5） 对于传感器输出信号的每个像素; 以及用于限制所述传感器输出信号或所述多个颜色信号值（R，G，B）的限幅装置（8）。 优选地，信号处理装置还包括：用于从多个颜色信号值（R，G，B）产生亮度信号（Y）和色度信号（U，V）的转换单元（6）和调整单元 10），用于当执行限幅时将色度信号（U，V）选择性地设置为零色差（8）。 有利地，夹持装置（8）布置在传感器（3）和重构单元（5）之间，并且信号处理装置还包括用于产生用于调节单元的开关信号的单个位白色夹持延迟单元（11） （10），所述开关信号包括来自或至少响应于来自所述限幅装置（8）的指示已经发生限幅的信号（SS）的至少2×2位数组。
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公开(公告)号：US07847842B2
公开(公告)日：2010-12-07
申请号：US11120587
申请日：2005-05-03
IPC分类号： H04N5/208
摘要： The present invention relates to digital image sensors and in particular to contour filters (ZSB, 7) preventing green non-uniformity in the contour signal of the RGB Bayer image sensors. A set of rules is specified for designing the filter coefficients in the filter, whereby green non-uniformity is prevented.
摘要翻译： 本发明涉及数字图像传感器，特别涉及防止RGB拜耳图像传感器的轮廓信号中的绿色不均匀性的轮廓滤波器（ZSB，7）。 规定了一组规则来设计滤波器中的滤波器系数，从而防止了绿色不均匀性。
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公开(公告)号：US07728882B2
公开(公告)日：2010-06-01
申请号：US11447527
申请日：2006-06-06
CPC分类号： G06T3/4023 , G06T3/4015 , H04N9/045
摘要： The present invention relates to interpolating a missing color value of a given pixel in an array of pixels. The missing color value is determined from color values of neighboring pixels using a median-based technique in which the median is taken of the four pixels values of the horizontally and vertically neighboring pixels (G1-G4) having a same color as the missing color value, and color information from at least one other color (R/B) at the given pixel.
摘要翻译： 本发明涉及内插像素阵列中给定像素的缺失颜色值。 使用基于中值的技术从相邻像素的颜色值确定缺失的颜色值，其中取与具有与缺失颜色值相同的颜色的水平和垂直相邻像素（G1-G4）的四个像素值的中值 ，以及来自给定像素处的至少一种其它颜色（R / B）的颜色信息。
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6.发明授权Method and apparatus for processing a sensor signal having a plurality of pixels from an image sensor, computer program product, computing system and camera 失效用于处理来自图像传感器，计算机程序产品，计算系统和相机的具有多个像素的传感器信号的方法和装置公开(公告)号：US07573515B2
公开(公告)日：2009-08-11
申请号：US10519060
申请日：2003-06-24
IPC分类号： H04N5/335
CPC分类号： G06T3/4015 , G06T5/20 , H04N9/045
摘要： A reconstruction method based on a white-compensated luminance reconstruction and using filter weights referred to as smartgreen-parameters is proposed. An aliasing free luminance signal, even at the multiples of the sample frequency and in case of a camera without optical low pass filter is achieved. Moreover this white-compensated luminance-signal is free of signal distortion. The proposed method allows a suitable low pass filter to be added or combined and a is particular well suited to implement a variety of abasing free color- and contour-filters. The RGB color signals are reconstructed using filter weights which can be chosen as a function of the heaviness of the sensor matrix and of the optical transfer of the camera.
摘要翻译： 提出了一种基于白补偿亮度重建和使用称为智能参数的滤波器权重的重建方法。 即使在采样频率的倍数和没有光学低通滤波器的相机的情况下，也可实现无混叠的亮度信号。 此外，该白色补偿亮度信号没有信号失真。 所提出的方法允许添加或组合合适的低通滤波器，并且a特别适用于实现各种无用的颜色和轮廓滤波器。 使用可以根据传感器矩阵的重度和相机的光学传输的函数来选择滤光器重量来重建RGB颜色信号。
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公开(公告)号：US07262796B2
公开(公告)日：2007-08-28
申请号：US10022382
申请日：2001-10-30
IPC分类号： H04N9/73
摘要： A method for processing analog color signals includes analog preprocessing sensor output signals to obtain analog preprocessed signals that cause a reduced amount of digital quantizatlon errors; converting the analog preprocessed signals into digital signals; reconstructing a first basic color signal, a second basic color signal, and a third basic color signal from the digital signals, and correcting the basic color signals, in which a three color signal matrix containing the first, second and third basic color signals is multiplied by a correction matrix containing coefficients that depend on the analog preprocessing. The analog preprocessing may include a white balance adjustment or the horizontal sum values of the correction matrix are adjusted to one for horizontal sum values larger than one, with the analog preprocessing comprising a corresponding multiplication in the analog preprocessing. A color camera includes an RGB Bayer sensor for generating the sensor output signals, and the above-mentioned processing device.
摘要翻译： 一种处理模拟彩色信号的方法包括模拟预处理传感器输出信号，以获得导致数字量化误差量减少的模拟预处理信号; 将模拟预处理信号转换成数字信号; 从数字信号重建第一基本颜色信号，第二基本颜色信号和第三基本颜色信号，以及校正其中包含第一，第二和第三基本色彩信号的三色信号矩阵相乘的基本色彩信号 通过包含依赖于模拟预处理的系数的校正矩阵。 模拟预处理可以包括白平衡调整，或者对于大于1的水平和值，将校正矩阵的水平和值调整为一，其中模拟预处理包括模拟预处理中的相应乘法。 彩色照相机包括用于产生传感器输出信号的RGB拜耳传感器和上述处理装置。
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公开(公告)号：US20080284877A1
公开(公告)日：2008-11-20
申请号：US11571528
申请日：2005-06-28
IPC分类号： H04N5/217
CPC分类号： H04N9/646
摘要： Image color noise reduction circuit (20) and image processing method for processing a digital image having primary color signals (R; G; B). A determination circuit (27) determines a maximum signal value (Signaltype) from the primary color signals. A calculation circuit (29) connected to the determination circuit (27) reduces a color saturation of the digital image by modifying the primary color signals or signals related thereto depending on the maximum signal value. The color saturation is reduced at least for low values of the primary color signals or signals related thereto.
摘要翻译： 图像彩色降噪电路（20）和用于处理具有原色信号（R; G; B）的数字图像的图像处理方法。 确定电路（27）根据原色信号确定最大信号值（Signaltype）。 连接到确定电路（27）的计算电路（29）通过根据最大信号值修改与其相关的原色信号或信号来减少数字图像的色彩饱和度。 至少对于与其相关的原色信号或信号的低值，颜色饱和度降低。
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公开(公告)号：US06867802B2
公开(公告)日：2005-03-15
申请号：US09838853
申请日：2001-04-20
CPC分类号： H04N9/045
摘要： A color camera comprises a light sensitive area (13) comprising light sensitive elements, and a color filter layer (12) associated with the sensitive elements comprising Red, Green and Blue (R-G-B) filter layer elements. The color filter layer (12) comprises a repetitive sub-pattern of eight adjacent lines or columns, which sub-pattern comprises color filter elements in the following sequence: line (column) 1: G-R line (column) 2: B-G line (column) 3: G-R line (column) 4: G-B line (column) 5: G-R line (column) 6: B-G line (column) 7: R-G line (column) 8: B-G.
摘要翻译： 彩色照相机包括包含光敏元件的光敏区域（13）和与包括红，绿和蓝（R-G-B）滤光层元件的敏感元件相关联的滤色器层（12）。 滤色器层（12）包括八个相邻行或列的重复子图案，该子图案包括以下顺序的滤色器元件：行（列）1：G-Rline（列）2：B-Gline （柱）3：G-Rline（柱）4：G-线（柱）5：G-线（柱）6：B-线（柱）7：R-线（柱）8：BG。
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公开(公告)号：US07081919B2
公开(公告)日：2006-07-25
申请号：US10067414
申请日：2002-02-04
CPC分类号： G06T3/4023 , G06T3/4015 , H04N9/045
摘要： The present invention relates to interpolating a missing color value of a given pixel in an array of pixels. The missing color value is determined from color values of neighboring pixels using a median-based technique in which the median is taken of the four pixels values of the horizontally and vertically neighboring pixels (G1–G4) having a same color as the missing color value, and color information from at least one other color (R/B) at the given pixel.
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