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11. 发明授权

US08085436B2 Digital printing using similar colorants 有权
标题翻译：使用类似着色剂的数字印刷
公开(公告)号：US08085436B2
公开(公告)日：2011-12-27
申请号：US12330552
申请日：2008-12-09
申请人： Douglas W. Couwenhoven , Kevin E. Spaulding
发明人： Douglas W. Couwenhoven , Kevin E. Spaulding
IPC分类号： H04N1/60 , H04N1/40 , H04N1/46 , G03F3/08 , G06K9/00
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。

12. 发明授权

US07715043B2 Multilevel print masking method 有权
标题翻译：多层印刷掩模法
公开(公告)号：US07715043B2
公开(公告)日：2010-05-11
申请号：US11362346
申请日：2006-02-24
申请人： Steven A. Billow , Douglas W. Couwenhoven , Richard C. Reem , Kevin E. Spaulding
发明人： Steven A. Billow , Douglas W. Couwenhoven , Richard C. Reem , Kevin E. Spaulding
IPC分类号： G06K15/10 , H04N1/40
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。

13. 发明申请

US20100103438A1 ADAPTIVE COLOR TRANSFORM TO CONTROL COLOR INCONSTANCY 有权
标题翻译：自适应颜色变换控制颜色不雅
公开(公告)号：US20100103438A1
公开(公告)日：2010-04-29
申请号：US12257417
申请日：2008-10-24
申请人： Christopher R. Hauf , Kevin E. Spaulding , Douglas W. Couwenhoven
发明人： Christopher R. Hauf , Kevin E. Spaulding , Douglas W. Couwenhoven
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。

14. 发明申请

US20090219577A1 MULTI-LEVEL HALFTONING PROVIDING REDUCED ERROR DIFFUSION ARTIFACTS 有权
标题翻译：提供减少错误扩散的多级化妆
公开(公告)号：US20090219577A1
公开(公告)日：2009-09-03
申请号：US12040055
申请日：2008-02-29
申请人： Douglas W. Couwenhoven , Kevin E. Spaulding
发明人： Douglas W. Couwenhoven , Kevin E. Spaulding
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。

15. 发明授权

US07365879B2 Determining sets of n-dimensional colorant control signals 有权
标题翻译：确定n维着色剂控制信号的集合
公开(公告)号：US07365879B2
公开(公告)日：2008-04-29
申请号：US10845037
申请日：2004-05-13
申请人： Gustav J. Braun , John R. D'Errico , Kevin E. Spaulding , Douglas W. Couwenhoven
发明人： Gustav J. Braun , John R. D'Errico , Kevin E. Spaulding , Douglas W. Couwenhoven
IPC分类号： H04N1/60 , G09G5/02
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。

16. 发明授权

US07362472B2 Color error diffusion 失效
标题翻译：颜色错误扩散
公开(公告)号：US07362472B2
公开(公告)日：2008-04-22
申请号：US10794133
申请日：2004-03-05
申请人： Douglas W. Couwenhoven , Kevin E. Spaulding
发明人： Douglas W. Couwenhoven , Kevin E. Spaulding
IPC分类号： G06F15/00 , G06K15/00
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。

17. 发明申请

US20080055649A1 COLOR ERROR DIFFUSION WITH ERROR SIGNAL OFFSETS 失效
标题翻译：带有错误信号偏移的颜色错误扩展
公开(公告)号：US20080055649A1
公开(公告)日：2008-03-06
申请号：US11468971
申请日：2006-08-31
申请人： Kevin E. Spaulding , Douglas W. Couwenhoven
发明人： Kevin E. Spaulding , Douglas W. Couwenhoven
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。

18. 发明授权

US07245395B2 Calibrating a digital printer using a cost function 有权
标题翻译：使用成本函数校准数字打印机
公开(公告)号：US07245395B2
公开(公告)日：2007-07-17
申请号：US10309866
申请日：2002-12-04
申请人： Douglas W. Couwenhoven , Gustav Braun , Kevin E. Spaulding , Geoffrey J. Woolfe
发明人： Douglas W. Couwenhoven , Gustav Braun , Kevin E. Spaulding , Geoffrey J. Woolfe
IPC分类号： H04N1/58 , H04N1/60 , G06K9/00
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。

19. 发明授权

US07196817B2 Printing of digital images using reduced colorant amounts while preserving perceived color 有权
标题翻译：使用减少的着色剂量打印数字图像，同时保持感知的颜色
公开(公告)号：US07196817B2
公开(公告)日：2007-03-27
申请号：US10317778
申请日：2002-12-12
申请人： Douglas W. Couwenhoven , Kevin E. Spaulding
发明人： Douglas W. Couwenhoven , Kevin E. Spaulding
IPC分类号： G06F15/00
CPC分类号： G06K15/107 , G06K2215/0094 , H04N1/52
摘要： A method for modifying an input digital image having an (x,y) array of image pixels, each image pixel having an input code value for each of four or more color channels, to produce a depleted digital image subject to a total colorant amount limit. The method includes determining depleted code values for each color channel such that the depleted code values produce substantially the input perceived color according to a device color model.
摘要翻译：一种用于修改具有图像像素的（x，y）阵列的输入数字图像的方法，每个图像像素具有用于四个或更多个颜色通道中的每一个的输入代码值，以产生经受总着色剂量极限的耗尽数字图像。该方法包括确定每个颜色通道的耗尽代码值，使得耗尽的代码值根据设备颜色模型基本上产生输入感知颜色。

20. 发明授权

US07190485B2 Method for multilevel printing of digital images using reduced colorant amounts 有权
标题翻译：使用减少的着色剂量对数字图像进行多层印刷的方法
公开(公告)号：US07190485B2
公开(公告)日：2007-03-13
申请号：US09881460
申请日：2001-06-14
申请人： Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
发明人： Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
IPC分类号： G06F15/00
CPC分类号： H04N1/52 , H04N1/6019
摘要： A method for modifying an input digital image having an (x, y) array of pixels, each pixel having an input code value for one or more color channels, wherein said input code value has a nonlinear relationship to colorant amount, to form an output digital image containing output code values for each pixel subject to a total colorant amount limit.
摘要翻译：一种用于修改具有（x，y）像素阵列的输入数字图像的方法，每个像素具有用于一个或多个颜色通道的输入代码值，其中所述输入代码值与着色剂量具有非线性关系，以形成输出数字图像包含受到着色剂总量限制的每个像素的输出代码值。

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