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公开(公告)号：US07652795B2
公开(公告)日：2010-01-26
申请号：US11295217
申请日：2005-12-06
CPC分类号： H04N1/58 , B41J2/2107 , B41J2/2132
摘要： A method for modifying an input digital image having one or more color channels, each color channel having an (x,y) array of image pixel values, to form a modified digital image so that when the modified digital image is used to produce a printed image on an inkjet printer there are reduced ink bleed artifacts.
摘要翻译： 一种用于修改具有一个或多个颜色通道的输入数字图像的方法，每个颜色通道具有图像像素值的（x，y）阵列，以形成修改后的数字图像，使得当修改的数字图像用于产生印刷 喷墨打印机上的图像有减少的墨水渗出伪影。
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公开(公告)号：US07365879B2
公开(公告)日：2008-04-29
申请号：US10845037
申请日：2004-05-13
CPC分类号： H04N1/60 , H04N1/6022
摘要： A method for determining a set of n-dimensional colorant control signals that map to a point P in an m-dimensional color space where n>m, including determining a forward device model that maps n-dimensional colorant control signals to m-dimensional color space signals; determining a set of n-dimensional colorant control signal simplexes that span a domain of the forward device model; and determining a set of range space simplexes in the m-dimensional color space corresponding to the set of n-dimensional colorant control space signal simplexes by mapping the vertices of the n-dimensional colorant control signal simplexes into the m-dimensional color space using the forward device model. The method also includes specifying a point P in the m-dimensional color space; and determining the set of n-dimensional colorant control signals that map to the point P in the m-dimensional color space, by performing m sequential slicing processes through the set of range space simplexes.
摘要翻译： 一种用于确定映射到m维色空间中的点P的n维着色剂控制信号的集合的方法，包括确定将n维着色剂控制信号映射到m维颜色的正向设备模型 空间信号; 确定跨越前向设备模型的域的一组n维着色剂控制信号单体; 以及通过将所述n维着色剂控制信号单面的顶点通过将所述n维着色剂控制信号单面的顶点映射到所述m维色彩空间中来确定与所述一组n维着色剂控制空间信号单面相对应的m维色彩空间中的一组范围空间单性 正向设备型号。 该方法还包括在m维颜色空间中指定点P; 以及通过在所述一维范围空间单位中执行m次连续切片处理，确定映射到m维色彩空间中的点P的n维着色剂控制信号的集合。
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公开(公告)号：US07369276B2
公开(公告)日：2008-05-06
申请号：US10795011
申请日：2004-03-05
CPC分类号： H04N1/4052
摘要： A method for multi-level halftoning an input digital image to form an output digital image which includes a multi-level error diffusion halftoning process incorporating periodic dither signals whose amplitudes are adjusted as a function of the error-diffusion texture characteristics.
摘要翻译： 一种用于多级对输入数字图像进行半色调以形成输出数字图像的方法，该输出数字图像包括多级误差扩散半色调处理，其包括作为误差扩散纹理特征的函数调整幅度的周期性抖动信号。
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公开(公告)号：US20110211229A1
公开(公告)日：2011-09-01
申请号：US13105063
申请日：2011-05-11
IPC分类号： H04N1/405
CPC分类号： H04N1/52
摘要： A method for multi-toning an input digital image having input pixels with two or more color channels to form an output digital image having modified output levels. The method includes determining modified output levels using a combined error signal formed from intermediate error signals for each color channel together with an error signal offset value, and adjusting the input levels for the nearby pixels responsive to weighted error signals.
摘要翻译： 一种用于多输入具有两个或多个颜色通道的输入像素的输入数字图像以形成具有修改的输出电平的输出数字图像的方法。 该方法包括使用由每个颜色通道的中间误差信号形成的组合误差信号以及误差信号偏移值来确定修正的输出电平，以及响应于加权误差信号调整附近像素的输入电平。
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公开(公告)号：US20100141970A1
公开(公告)日：2010-06-10
申请号：US12330552
申请日：2008-12-09
IPC分类号： H04N1/60
CPC分类号： H04N1/60
摘要： A method for printing an input digital image using a digital printer having a set of colorants with substantially the same color but different densities, including a sequence of node points where each of the two or more colorants are either at their maximum or minimum values, setting colorant concentrations such that the color channel output responses corresponding to the sequence of node points are substantially equally spaced in a visually uniform color space; forming colorant control look-up tables to provide smooth transitions in the color channel output response between the sequence of node points; addressing the colorant control look-up tables with the printer code value for each pixel of the input digital image to determine the colorant control signals for each of the two or more colorants; and controlling the digital printer using the colorant control signals to produce a print of the input digital image.
摘要翻译： 一种使用具有基本上相同颜色但不同密度的一组着色剂的数字打印机打印输入数字图像的方法，包括其中两个或更多个着色剂中的每一个处于其最大值或最小值的节点点序列，设置 着色剂浓度使得对应于节点点序列的颜色通道输出响应在视觉均匀的颜色空间中基本相等间隔; 形成着色剂控制查找表，以在节点间序列中的颜色通道输出响应中提供平滑过渡; 使用输入数字图像的每个像素的打印机代码值寻址着色剂控制查找表，以确定两种或更多种着色剂中的每一种的着色剂控制信号; 以及使用着色剂控制信号来控制数字打印机以产生输入数字图像的打印。
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6.发明授权Method of printing digital images using multiple colorants having substantially the same color 有权使用具有基本上相同颜色的多个着色剂打印数字图像的方法公开(公告)号：US06312101B1
公开(公告)日：2001-11-06
申请号：US09455981
申请日：1999-12-06
IPC分类号： B41J221
CPC分类号： H04N1/40087
摘要： A method for reproducing digital images having at least one color channel containing pixels using a digital printer having a set of colorants is disclosed. Two or more of the colorants of the set have substantially the same color but different densities. Printer code values for a particular color channel are used to control colorant amounts for the two or more colorants.
摘要翻译： 公开了一种使用具有一组着色剂的数字打印机再现具有至少一个包含像素的彩色通道的数字图像的方法。 组合物中的两种或更多种着色剂具有基本相同的颜色但不同的密度。 用于特定颜色通道的打印机代码值用于控制两种或更多种着色剂的着色剂量。
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7.发明授权Method for segmenting a digital image into a foreground region and a key color region 失效将数字图像分割成前景区域和键颜色区域的方法
公开(公告)号：US6011595A
公开(公告)日：2000-01-04
申请号：US934373
申请日：1997-09-19
IPC分类号： H04N9/75
CPC分类号： H04N9/75
摘要： A method for segmenting a digital image into a foreground region and a key color region including characterizing a distribution of key color values; using the distribution of key color values to produce a multi-dimensional look-up-table having three or more dimensions indexed by color values in a selected color space to define a key color volume; addressing the multi-dimensional look-up table with color values of pixels in the digital image to determine whether the color values of such pixels are within the key color volume; and labeling pixels in the digital image whose color values fall within the key color volume to be within the key color region and labeling all other pixels to be within the foreground region whereby the digital image is segmented into the foreground region and the key color region.
摘要翻译： 一种用于将数字图像分割成前景区域和键颜色区域的方法，包括表征键颜色值的分布; 使用键颜色值的分布来产生具有由所选颜色空间中的颜色值索引的三维或更多维度的多维查找表，以定义键颜色体积; 用数字图像中的像素的颜色值寻址多维查找表，以确定这些像素的颜色值是否在关键颜色体积内; 并且将其颜色值落在键颜色体积内的数字图像中的像素标记为在关键颜色区域内，并将所有其他像素标记在前景区域内，由此数字图像被分割成前景区域和键颜色区域。
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公开(公告)号：US08422082B2
公开(公告)日：2013-04-16
申请号：US12507226
申请日：2009-07-22
IPC分类号： H04N1/407
CPC分类号： H04N1/6022
摘要： A method for modifying an input digital image having three color channels, to form a modified digital image suitable for use by an inkjet printer having reduced ink bleed artifacts comprising computing a transformed digital image containing at least a black color channel and a color dependent scale factor channel, computing a filtered black color channel using a convolution operation, and forming the modified digital image in response to the corresponding pixel values of the color dependent scale factor channel and the filtered black color channel, so that when the modified digital image is used to produce a printed image on an inkjet printer there are reduced ink bleed artifacts.
摘要翻译： 一种用于修改具有三个颜色通道的输入数字图像的方法，以形成适于由具有减少的墨水泄漏伪影的喷墨打印机使用的修改的数字图像，包括计算至少包含黑色通道和颜色依赖比例因子的变换数字图像 使用卷积运算来计算滤波后的黑色频道，以及响应于色彩依赖比例因子信道和滤波黑色频道的相应像素值形成修改后的数字图像，使得当修改后的数字图像被用于 在喷墨打印机上产生印刷图像有减少的渗墨伪影。
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公开(公告)号：US08018623B2
公开(公告)日：2011-09-13
申请号：US12040055
申请日：2008-02-29
IPC分类号： G06K15/00
CPC分类号： H04N1/40087 , H04N1/4053
摘要： A method for multi-level error diffusion halftoning an input digital image to form an output digital image with reduced error diffusion texture contouring artifacts which includes modifying the input pixel values for a fraction of the input pixels using a periodic dither signal, where the fraction is a function of the texture artifact characteristics of the multi-level error diffusion halftoning process.
摘要翻译： 一种用于多级误差扩散的方法，用于对输入数字图像进行半色调以形成具有减小的误差扩散纹理轮廓伪迹的输出数字图像，其包括使用周期性抖动信号修改输入像素的一部分输入像素值，其中分数为 多级错误扩散半色调处理的纹理伪影特征的函数。
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公开(公告)号：US5986771A
公开(公告)日：1999-11-16
申请号：US934372
申请日：1997-09-19
CPC分类号： H04N1/62
摘要： A method for determining a control signal for use in combining a first digital image that includes both a foreground region and a key color region having an associated key color with a second background digital image, both images including pixels having color values is disclosed. The method includes segmenting the first digital image into a foreground region and a key color region; and identifying transition region pixels in the first digital image that are in the vicinity of a boundary between the segmented foreground region and the segmented key color region. The method further includes computing a color difference signal between the color values of the first digital image and the key color for at least some pixels in the transition region; and computing a control signal for transition region pixels as a function of the color difference signal, where the control signal is to be used to combine the foreground region of the first digital image with the second background digital image.
摘要翻译： 公开了一种用于确定控制信号的方法，用于将包括前景区域和具有相关联的键颜色的键颜色区域的第一数字图像与第二背景数字图像组合在一起，包括具有颜色值的像素的两个图像。 该方法包括将第一数字图像分割成前景区域和键颜色区域; 以及识别在所述第一数字图像中处于所述分割的前景区域和所述分割的键颜色区域之间的边界附近的过渡区域像素。 该方法还包括计算过渡区域中的至少一些像素的第一数字图像的颜色值和键颜色之间的色差信号; 以及计算作为所述色差信号的函数的过渡区域像素的控制信号，其中所述控制信号将用于将所述第一数字图像的前景区域与所述第二背景数字图像组合。
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