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1.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
Applicant: Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
Inventor： Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
IPC: B41J221
CPC classification number: H04N1/40087
Abstract: 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.
Abstract translation: 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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2.发明授权Partially correlated minimum visibility halftone patterns for digital printers 失效部分相关的最小可见度数字打印机的半色调图案
公开(公告)号：US5946452A
公开(公告)日：1999-08-31
申请号：US799954
申请日：1997-02-14
Applicant: Kevin E. Spaulding , Rodney L. Miller
Inventor： Kevin E. Spaulding , Rodney L. Miller
CPC classification number: H04N1/4051
Abstract: A method for halftoning a digital image having an x,y array of pixels each having an associated input pixel value, includes the steps of providing a memory containing a dither bitmap for each input pixel value of the digital image where the dither bitmaps are partially correlated; selecting a dither bitmap corresponding to the input pixel value for a pixel in said digital image; modularly addressing the selected dither bitmap with the location of said pixel to obtain an output halftone image value; and repeating steps for each pixel in the digital image.
Abstract translation: 一种用于半色调具有每个具有相关联的输入像素值的x，y像素阵列的数字图像的方法包括以下步骤：为抖动位图部分相关的数字图像的每个输入像素值提供包含抖动位图的存储器 ; 选择与所述数字图像中的像素的输入像素值相对应的抖动位图; 以所述像素的位置模块化地寻址所选择的抖动位图以获得输出半色调图像值; 并对数字图像中的每个像素重复步骤。
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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
Applicant: Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
Inventor： Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
CPC classification number: H04N1/4052 , H04N1/4053
Abstract: 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.
Abstract translation: 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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4.发明授权Method and apparatus for printing an image on a device having multiple dot densities and multiple dot areas 失效用于在具有多个点密度和多个点区域的设备上打印图像的方法和装置
公开(公告)号：US5975671A
公开(公告)日：1999-11-02
申请号：US657723
申请日：1996-05-30
Applicant: Kevin E. Spaulding , Douglas W. Couwenhoven , Rodney L. Miller
Inventor： Kevin E. Spaulding , Douglas W. Couwenhoven , Rodney L. Miller
Abstract: A method for processing a digitized continuous tone image so that such processed image is adapted to be applied to an image rendering device which prints dots from a set of two or more possible dot-areas and from a set of colorants having different colorant concentrations is disclosed. The method includes selecting a set of N dot-area and colorant concentration combinations, each of said combinations producing a different integrated optical density value and multilevel halftone processing the digitized continuous tone image to produce an output image having a set of output levels wherein one member of the set of N dot-area and colorant concentration combinations is associated with each of the possible output levels.
Abstract translation: 一种用于处理数字化连续色调图像的方法，使得这种处理后的图像适于应用于从一组两个或更多个可能的点区域和从具有不同着色剂浓度的一组着色剂中打印点的图像渲染装置 。 该方法包括选择一组N个点区域和着色剂浓度组合，每个所述组合产生不同的积分光密度值，并且多级半色调处理数字化连续色调图像以产生具有一组输出电平的输出图像，其中一个成员 的N个点区域和着色剂浓度组合的组合与每个可能的输出水平相关联。
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公开(公告)号：US06407825B1
公开(公告)日：2002-06-18
申请号：US09213637
申请日：1998-12-17
Applicant: Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
Inventor： Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
IPC: G06F1500
CPC classification number: H04N1/52
Abstract: A method for modifying an input image having an (x,y) array of input pixels, each pixel having an input colorant amount for one or more color channels to form an output image with output colorant amounts, said output image being suitable for printing on a digital printing device having two or more printing levels, including determining an average total pixel colorant amount in a neighborhood of an input pixel in the input image; determining a colorant reduction amount for each color channel of the input pixel responsive to the input colorant amount, the average total pixel colorant amount, and a threshold colorant amount; determining an output colorant amount for each color channel of the input pixel responsive to the colorant reduction amount, the input colorant amount, and a spatially periodic dither signal, so that the average output colorant amount in a neighborhood of each pixel in the output image is constrained to be less than the threshold colorant amount; and repeating steps a) through c) for each pixel in the input image.
Abstract translation: 一种用于修改具有输入像素的（x，y）阵列的输入图像的方法，每个像素具有用于一个或多个颜色通道的输入着色剂量以形成具有输出着色剂量的输出图像，所述输出图像适于在 具有两个或多个打印级别的数字打印装置，包括确定所述输入图像中的输入像素附近的平均总像素着色剂量; 响应于输入着色剂量，平均总像素着色剂量和阈值着色剂量，确定输入像素的每个颜色通道的着色剂减少量; 响应于着色剂还原量，输入着色剂量和空间周期性抖动信号，确定输入像素的每个颜色通道的输出着色剂量，使得输出图像中每个像素附近的平均输出着色剂量为 被限制在小于阈值着色剂量; 并且对输入图像中的每个像素重复步骤a）至c）。
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Patent Agency Ranking
6.发明授权Method for multilevel printing of digital images using reduced colorant amounts 有权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
Applicant: Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
Inventor： Douglas W. Couwenhoven , Kevin E. Spaulding , Rodney L. Miller
IPC: G06F15/00
CPC classification number: H04N1/52 , H04N1/6019
Abstract: 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.
Abstract translation: 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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7.发明授权Method for multicolorant printing of digital images using reduced colorant amounts 有权使用着色剂量减少的多色印刷数字图像的方法公开(公告)号：US06435657B1
公开(公告)日：2002-08-20
申请号：US09933498
申请日：2001-08-20
Applicant: Douglas W. Couwenhoven , Rodney L. Miller , Kevin E. Spaulding
Inventor： Douglas W. Couwenhoven , Rodney L. Miller , Kevin E. Spaulding
IPC: B41J221
CPC classification number: B41J2/21 , B41J2/2056 , H04N1/52
Abstract: A method for modifying an input image suitable for printing on a digital printer having two or more colorants, wherein at least two of the colorants are similar having substantially the same color but different densities, to form an output image with pixels representing modified colorant amounts subject to a total colorant amount limit.
Abstract translation: 一种用于修改适于在具有两个或更多个着色剂的数字打印机上打印的输入图像的方法，其中至少两个着色剂具有基本上相同颜色但不同密度的相似颜色，以形成具有代表改性着色剂量对象的像素的输出图像 达到总着色剂量极限。
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公开(公告)号：US5553199A
公开(公告)日：1996-09-03
申请号：US237072
申请日：1994-05-03
Applicant: Kevin E. Spaulding , Douglas W. Couwenhoven , Rodney L. Miller
Inventor： Kevin E. Spaulding , Douglas W. Couwenhoven , Rodney L. Miller
CPC classification number: H04N1/6025
Abstract: A method of calibrating a four color printer capable of printing three colors and black, includes the steps of: forming a minimum black data structure representing a minimum black strategy; forming a maximum black data structure representing a maximum black strategy; for each printable black level, forming a fixed black data structure; and for a specific output color value, finding the minimum and maximum black levels using the minimum and maximum black data structures, determining a desired black level between the minimum and maximum black levels according to a defined black strategy, and determining the three printing color levels from the fixed black data structure corresponding to the desired black level.
Abstract translation: 一种校准能够打印三种颜色和黑色的四色打印机的方法包括以下步骤：形成代表最小黑色策略的最小黑色数据结构; 形成表示最大黑色策略的最大黑色数据结构; 对于每个可打印的黑色电平，形成固定的黑色数据结构; 并且对于特定输出颜色值，使用最小和最大黑色数据结构找到最小和最大黑色电平，根据定义的黑色策略确定最小和最大黑色电平之间的期望黑电平，以及确定三种打印色彩水平 从对应于所需黑色电平的固定黑色数据结构。
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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
Applicant: Kevin E. Spaulding , Douglas W. Couwenhoven
Inventor： Kevin E. Spaulding , Douglas W. Couwenhoven
IPC: H04N1/405
CPC classification number: H04N1/52
Abstract: 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.
Abstract translation: 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：US20100201851A1
公开(公告)日：2010-08-12
申请号：US12764380
申请日：2010-04-21
Applicant: Theodore F. Bouk , Amy D. Enge , Kevin E. Spaulding
Inventor： Theodore F. Bouk , Amy D. Enge , Kevin E. Spaulding
IPC: H04N5/208
CPC classification number: G06T7/0004 , G06T2207/20021 , G06T2207/20052 , G06T2207/30144 , G06T2207/30168 , H04N19/60 , H04N19/85
Abstract: A method for determining a sharpness predictor for an input digital image includes determining one or more image metrics by analyzing the input digital image; and determining the sharpness predictor from the one or more image metrics.
Abstract translation: 用于确定输入数字图像的锐度预测器的方法包括通过分析输入数字图像来确定一个或多个图像度量; 以及从所述一个或多个图像度量确定所述锐度预测器。
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