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公开(公告)号：US08098403B2
公开(公告)日：2012-01-17
申请号：US13105063
申请日：2011-05-11
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：US07982916B2
公开(公告)日：2011-07-19
申请号：US12275705
申请日：2008-11-21
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：US20110019238A1
公开(公告)日：2011-01-27
申请号：US12507226
申请日：2009-07-22
IPC分类号： H04N1/409
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：US20100128313A1
公开(公告)日：2010-05-27
申请号：US12275705
申请日：2008-11-21
IPC分类号： H04N1/40
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：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：US07234791B2
公开(公告)日：2007-06-26
申请号：US11114530
申请日：2005-04-26
CPC分类号： H04N1/58
摘要： A method for forming a modified digital image by modifying an input digital image having a black input color channel corresponding to a black colorant and one or more additional input color channels corresponding to additional colorants, each color channel having an (x,y) array of image pixel values, to form a modified digital image having one or more modified color channels, said modified digital image being suitable for producing a printed image having reduced ink bleed artifacts on an inkjet printer using the black and additional colorants includes forming a filtered black color channel from the black input color channel using a convolution operation, and forming the modified digital image by modifying image pixel values in one or more of the additional input color channels in response to the corresponding image pixel values of the filtered black color channel.
摘要翻译： 一种用于通过修改具有与黑色着色剂相对应的黑色输入色彩通道的输入数字图像和与另外的着色剂相对应的一个或多个附加输入颜色通道来形成修改的数字图像的方法，每个颜色通道具有（x，y） 图像像素值，以形成具有一个或多个修改的颜色通道的修改的数字图像，所述修改的数字图像适合于使用黑色和附加着色剂在喷墨打印机上产生具有减少的排墨伪影的打印图像，包括形成滤色黑色 通过使用卷积运算从黑色输入色彩通道输出通道，并且通过响应于滤色黑色通道的相应图像像素值修改一个或多个附加输入颜色通道中的图像像素值来形成修改的数字图像。
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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
IPC分类号： G06F1500
CPC分类号： H04N1/52
摘要： 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.
摘要翻译： 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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公开(公告)号：US20100201851A1
公开(公告)日：2010-08-12
申请号：US12764380
申请日：2010-04-21
IPC分类号： H04N5/208
CPC分类号： G06T7/0004 , G06T2207/20021 , G06T2207/20052 , G06T2207/30144 , G06T2207/30168 , H04N19/60 , H04N19/85
摘要： 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.
摘要翻译： 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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公开(公告)号：US07535596B2
公开(公告)日：2009-05-19
申请号：US11121768
申请日：2005-05-04
CPC分类号： H04N1/6022
摘要： A method for determining colorant control values for a color imaging device having four or more colorants is disclosed. The method includes defining a color mapping for a set of paths through a three-channel color space, defining a color mapping function for the three-channel color space relating the three-channel color space values to colorant control values for the four or more colorants of the color imaging device by interpolating between the color mapping defined for the set of paths, forming a forward three-channel color model relating the three-channel color space values to device-independent color values, inverting the forward three-channel color model to determine an inverse three-channel color model relating the device-independent color values to the three-channel color space values, and combining the inverse three-channel color model and the color mapping function to determine an inverse device color model.
摘要翻译： 公开了一种用于确定具有四种或更多种着色剂的彩色成像装置的着色剂控制值的方法。 该方法包括通过三通道颜色空间定义一组路径的颜色映射，为三通道颜色空间值与四个或更多个着色剂的着色剂控制值定义三通道颜色空间的颜色映射功能 通过在为该组路径定义的颜色映射之间进行内插，形成将三通道颜色空间值与设备无关的颜色值相关联的前向三通道颜色模型，将前向三通道颜色模型反转到 确定将与设备无关的颜色值与三通道色彩空间值相关联的反向三通道颜色模型，并组合逆三通道颜色模型和颜色映射功能以确定逆设备颜色模型。
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公开(公告)号：US20080239334A1
公开(公告)日：2008-10-02
申请号：US11694098
申请日：2007-03-30
IPC分类号： G06K15/00
CPC分类号： H04N1/6094 , H04N1/603
摘要： A method for automatically compensating for scanner metamerism errors associated with scanning input images using a digital color image scanner, wherein the input images can be on a variety of different input media having colorants with different spectral characteristics, comprising scanning an input image on a digital color image scanner to produce a scanned image; determining one or more estimated color balance error values in a color balance parameter space by analyzing the scanned image using a color balance analysis algorithm; assigning an input medium from a set of possible input media for the scanned input image in response to the estimated color balance error values; selecting a scanner metamerism correction color transform associated with the assigned input medium; and applying the selected scanner metamerism correction color transform to the scanned image to produce a corrected image compensated for scanner metamerism errors.
摘要翻译： 一种用于自动补偿与使用数字彩色图像扫描器扫描输入图像相关的扫描器同色异谱误差的方法，其中所述输入图像可以在具有不同光谱特性的着色剂的各种不同输入介质上，包括以数字颜色扫描输入图像 图像扫描仪产生扫描图像; 通过使用颜色平衡分析算法分析扫描图像来确定颜色平衡参数空间中的一个或多个估计的颜色平衡误差值; 响应于估计的颜色平衡误差值，从扫描的输入图像的一组可能的输入介质中分配输入介质; 选择与分配的输入介质相关联的扫描器同色异谱校正颜色变换; 以及将所选择的扫描器同色异谱校正颜色变换应用于扫描图像，以产生补偿扫描器同色异谱误差的校正图像。
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