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11.发明授权Combining a first digital image and a second background digital image using a key color control signal and a spatial control signal 失效使用键颜色控制信号和空间控制信号组合第一数字图像和第二背景数字图像
公开(公告)号：US5937104A
公开(公告)日：1999-08-10
申请号：US934178
申请日：1997-09-19
IPC分类号： G06T13/00 , H04N9/75 , G06K15/316
CPC分类号： H04N9/75
摘要： A method for combining a first digital image and a second background digital image, both images including pixels having color values, wherein the first digital image includes both a foreground region having foreground color values and a key color region characterized by a key color, as well as a mixed region where the pixel color values are a mixture of the foreground color value and the key color, includes determining a first control signal that indicates the relative proportions of the foreground color value and the key color for pixels in the first digital image; and segmenting the first digital image into a key color region and a non-key color region in which the non-key color region includes pixels in the first digital image that are not in the key color region. The method also includes determining a second control signal that indicates a spatial distance between the pixels in the first digital image and a boundary between the key color region and the non-key color region; and combining the first digital image and the second background digital image in response to the first and second control signals, the key color, and an illuminant color value.
摘要翻译： 一种用于组合第一数字图像和第二背景数字图像的方法，包括具有颜色值的像素的两个图像，其中所述第一数字图像包括具有前景色值的前景区域和由键颜色表征的键颜色区域 作为像素颜色值是前景颜色值和键颜色的混合的混合区域，包括确定表示第一数字图像中的像素的前景色值和键颜色的相对比例的第一控制信号; 以及将所述第一数字图像分割成其中所述非键颜色区域包括所述第一数字图像中不在所述键颜色区域中的像素的键颜色区域和非键颜色区域。 该方法还包括确定指示第一数字图像中的像素与键颜色区域和非键颜色区域之间的边界之间的空间距离的第二控制信号; 以及响应于第一和第二控制信号，键颜色和光源颜色值来组合第一数字图像和第二背景数字图像。
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公开(公告)号：US5757517A
公开(公告)日：1998-05-26
申请号：US409554
申请日：1995-03-23
CPC分类号： H04N1/4052 , H04N1/4053
摘要： An error diffusion method suitable for producing an output image from an input image having a set of digitized continuous-tone pixels is disclosed. The method includes the steps of computing an image activity signal; computing a set of activity weights from the image activity signal; computing a filtered input value for a digitized continuous-tone input pixel responsive to the activity weights and computing a filtered output value responsive to the activity weights for each of the possible output levels. The method further includes selecting the output level in response to the filtered input value and the filtered output value for each of the possible output levels according to an error criterion; determining an error signal between the filtered input value and the filtered output value for the selected output level; and weighting the error signal and adjusting the filtered input values for nearby pixels which have not yet been processed.
摘要翻译： 公开了一种适用于从具有一组数字化连续色调像素的输入图像产生输出图像的误差扩散方法。 该方法包括计算图像活动信号的步骤; 从图像活动信号计算一组活动权重; 响应于活动权重计算数字化连续色调输入像素的滤波输入值，并响应于每个可能输出电平的活动权重计算滤波后的输出值。 该方法还包括根据误差准则，响应于滤波后的输入值和每个可能输出电平的滤波输出值来选择输出电平; 确定经滤波的输入值和所选输出电平的滤波输出值之间的误差信号; 并对误差信号进行加权，并调整尚未处理的附近像素的滤波输入值。
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公开(公告)号：US08272710B2
公开(公告)日：2012-09-25
申请号：US12174061
申请日：2008-07-16
IPC分类号： B41J2/205
CPC分类号： B41J19/142 , G06K15/107
摘要： A method for reducing banding artifacts for bi-directional multi-pass printing on an inkjet printer utilizing a printhead with a plurality of ink nozzles includes defining different print masks to be used for leftward and rightward printing passes such that both the order of ink laydown and the timing between ink laydown on different passes are each substantially constant for a given horizontal position within the image, independent of the vertical position within the image; and printing an input image on the inkjet printer with the defined print masks using a bi-directional multi-pass print mode.
摘要翻译： 一种利用具有多个墨水喷嘴的打印头在喷墨打印机上减少用于双向多次打印的条纹伪影的方法包括限定用于向左和向右打印通过的不同打印掩模，使得墨水沉积和 与图像内的垂直位置无关，图像中给定水平位置的不同通道之间的墨水沉积之间的时间大致恒定; 以及使用双向多遍打印模式使用所定义的打印掩模在喷墨打印机上打印输入图像。
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公开(公告)号：US08085436B2
公开(公告)日：2011-12-27
申请号：US12330552
申请日：2008-12-09
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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公开(公告)号：US07715043B2
公开(公告)日：2010-05-11
申请号：US11362346
申请日：2006-02-24
CPC分类号： G06K15/107 , G06K2215/0094
摘要： A method of computing swath data in response to a digital image having a plurality of rows and columns of pixels, each pixel having a multitone code value, the swath data suitable for commanding an inkjet printer containing at least one printhead having plurality of nozzles, wherein the inkjet printer is capable of ejecting ink drops in response to the swath data.
摘要翻译： 一种响应于具有多个像素行和列的数字图像来计算条带数据的方法，每个像素具有多音码代码值，所述幅条数据适用于命令包含具有多个喷嘴的至少一个打印头的喷墨打印机， 其中所述喷墨打印机能够响应于所述幅数据喷射墨滴。
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公开(公告)号：US20100103438A1
公开(公告)日：2010-04-29
申请号：US12257417
申请日：2008-10-24
IPC分类号： H04N1/60
CPC分类号： H04N1/60 , H04N1/6083 , H04N1/6088
摘要： A method for selecting the level of color inconstancy of an output image produced on a digital color printer having a neutral ink and a plurality of color inks is disclosed. The method includes analyzing the distribution of input colors present in the input digital image to determine a color distribution metric related to the importance of producing output images having a reduced color inconstancy when the output image is viewed under a variety of image illumination spectra; selecting a color transform from a set of available color transforms designed to produce output images having different color inconstancy characteristics in response to the color distribution metric; processing the input digital image using the selected color transform to produce a transformed image having a selected level of color inconstancy; and printing the transformed image on the digital color printer to produce an output image having the selected level of color inconstancy.
摘要翻译： 公开了一种用于选择在具有中性墨水和多种颜色墨水的数字彩色打印机上产生的输出图像的颜色不均匀度的方法。 该方法包括分析输入数字图像中存在的输入颜色的分布，以确定当在各种图像照明光谱下观看输出图像时，与产生具有减小的颜色不一致的输出图像的重要性相关的颜色分布度量; 从一组可用的颜色变换中选择颜色变换，所述颜色变换被设计成响应颜色分布度量产生具有不同颜色不变特征的输出图像; 使用所选择的颜色变换来处理所述输入数字图像以产生具有所选择的颜色不均匀水平的变换图像; 并且在数字彩色打印机上打印经变换的图像，以产生具有所选择的颜色不均匀水平的输出图像。
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公开(公告)号：US20090219577A1
公开(公告)日：2009-09-03
申请号：US12040055
申请日：2008-02-29
IPC分类号： G06F15/00
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：US07362472B2
公开(公告)日：2008-04-22
申请号：US10794133
申请日：2004-03-05
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 producing an error signal for each color channel, combining the error signals to produce a combined error signal, sorting the error signals to produce a set of sorted error signals, and determining modified output levels responsive to the set of sorted error signals and the combined error signal.
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。 该方法包括产生用于每个颜色通道的误差信号，组合误差信号以产生组合误差信号，排序误差信号以产生一组分类误差信号，以及响应于该分类误差信号集合确定修正的输出电平，以及 组合误差信号。
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公开(公告)号：US20080055649A1
公开(公告)日：2008-03-06
申请号：US11468971
申请日：2006-08-31
IPC分类号： G06K15/00
CPC分类号： H04N1/40087 , H04N1/4052
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 producing shifted error signals for each color channel, weighting the shifted error signals to determine weighted error signals for nearby pixels that have yet to be processed; producing shifted weighted error signals; and adjusting the input levels for the nearby pixels responsive to the shifted 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。 该方法包括为每个颜色通道产生移位的误差信号，对偏移的误差信号进行加权，以确定尚未处理的附近像素的加权误差信号; 产生移位的加权误差信号; 以及响应于偏移的加权误差信号来调整附近像素的输入电平。
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公开(公告)号：US07245395B2
公开(公告)日：2007-07-17
申请号：US10309866
申请日：2002-12-04
CPC分类号： H04N1/60 , B41J2/16523 , B41J2/17593
摘要： A method of selecting a preferred colorant control signal vector for a color output device for reproducing a desired output color, the color output device producing output colors using four or more colorants, wherein the amount of each colorant is controlled by the colorant control signal vector, includes determining a device model for the color output device relating the colorant control signal vector to the corresponding output color; using the device model to determine a set of valid colorant control signal vectors whose corresponding output color substantially matches the desired output color; and selecting the preferred colorant control signal vector from the set of valid colorant control signal vectors using a cost function responsive to one or more cost attribute(s) that vary as a function of the colorant control signal vector.
摘要翻译： 选择用于再现期望输出颜色的颜色输出装置的优选着色剂控制信号矢量的方法，所述彩色输出装置使用四种或更多种着色剂产生输出颜色，其中每种着色剂的量由着色剂控制信号矢量控制， 包括确定用于将着色剂控制信号向量与相应的输出颜色相关联的颜色输出装置的装置模型; 使用所述设备模型来确定一组有效的着色剂控制信号向量，其对应的输出颜色基本上与期望的输出颜色匹配; 以及使用响应于作为着色剂控制信号向量的函数而变化的一个或多个成本属性的成本函数从所述有效着色剂控制信号向量集合中选择优选着色剂控制信号向量。
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