公开(公告)号：US07362472B2

公开(公告)日：2008-04-22

申请号：US10794133

申请日：2004-03-05

Applicant: Douglas W. Couwenhoven ,  Kevin E. Spaulding

Inventor： Douglas W. Couwenhoven ,  Kevin E. Spaulding

IPC: G06F15/00 ,  G06K15/00

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 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.

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。

公开(公告)号：US20080055649A1

公开(公告)日：2008-03-06

申请号：US11468971

申请日：2006-08-31

Applicant: Kevin E. Spaulding ,  Douglas W. Couwenhoven

Inventor： Kevin E. Spaulding ,  Douglas W. Couwenhoven

IPC: G06K15/00

CPC classification number: H04N1/40087 ,  H04N1/4052

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 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.

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。

公开(公告)号：US07308135B2

公开(公告)日：2007-12-11

申请号：US10757048

申请日：2004-01-14

Applicant: Kevin E. Spaulding ,  Andrew C. Gallagher ,  Edward B. Gindele ,  Raymond W. Ptucha

Inventor： Kevin E. Spaulding ,  Andrew C. Gallagher ,  Edward B. Gindele ,  Raymond W. Ptucha

IPC: G06K9/00

CPC classification number: H04N1/6058

Abstract: A method for reconstructing an extended color gamut digital image from a limited color gamut digital image includes transforming the limited color gamut digital image in the particular limited color gamut color space to a reference color space forming a limited color gamut digital image in a reference color space; providing a modified inverse color adjustment function which, when such function operates on the limited color gamut digital image in the reference color space, produces the reconstructed extended color gamut digital image having reduced highlight color saturation for highlight color values when compared with corresponding color values of the initial extended color gamut image; and operating on the limited color gamut digital image in the reference color space with the modified inverse color adjustment function to form the reconstructed extended color gamut digital image having reduced levels of color contouring and quantization artifacts.

Abstract translation: 用于从有限色域数字图像重建扩展色域数字图像的方法包括将特定有限色域颜色空间中的有限色域数字图像变换为在参考色彩空间中形成有限色域数字图像的参考颜色空间 ; 提供修改的反色调整功能，当这种功能对参考色彩空间中的有限色域数字图像进行操作时，产生具有降低的高亮度色彩饱和度的重构的扩展色域数字图像， 初始扩展色域图像; 并且利用修改的反色调整功能在参考颜色空间中的有限色域数字图像上进行操作，以形成具有降低的颜色轮廓和量化伪像水平的重建的扩展色域数字图像。

公开(公告)号：US07196817B2

公开(公告)日：2007-03-27

申请号：US10317778

申请日：2002-12-12

Applicant: Douglas W. Couwenhoven ,  Kevin E. Spaulding

Inventor： Douglas W. Couwenhoven ,  Kevin E. Spaulding

IPC: G06F15/00

CPC classification number: G06K15/107 ,  G06K2215/0094 ,  H04N1/52

Abstract: 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.

Abstract translation: 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。

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。

公开(公告)号：US06980221B2

公开(公告)日：2005-12-27

申请号：US09900565

申请日：2001-07-06

Applicant: Kevin E. Spaulding ,  Qing Yu ,  Jiebo Luo

Inventor： Kevin E. Spaulding ,  Qing Yu ,  Jiebo Luo

IPC: B41J2/525 ,  G06T1/00 ,  G09G5/06 ,  H04N1/405 ,  H04N1/46 ,  H04N1/52 ,  H04N1/60 ,  H04N1/64 ,  G09G5/02 ,  G09G5/00

CPC classification number: H04N1/644

Abstract: Disclosed is a method for converting an input digital color image having a set of possible input colors to an output digital color image having a set of palette colors, the number of palette colors being less than the number of possible input colors, wherein the set of palette colors is determined based on the distribution of colors in the input digital image supplemented by a distribution of important colors.

Abstract translation: 公开了一种用于将具有一组可能输入颜色的输入数字彩色图像转换成具有一组调色板颜色的输出数字彩色图像的方法，调色板颜色的数量小于可能的输入颜色的数量，其中， 调色板颜色是基于输入数字图像中颜色的分布来确定的，补充了重要颜色的分布。

公开(公告)号：US06859210B2

公开(公告)日：2005-02-22

申请号：US09900564

申请日：2001-07-06

Applicant: Jiebo Luo ,  Qing Yu ,  Kevin E. Spaulding

Inventor： Jiebo Luo ,  Qing Yu ,  Kevin E. Spaulding

IPC: G06T1/00 ,  G06T5/40 ,  G06T7/00 ,  G09G5/06 ,  H04N1/46 ,  H04N1/60 ,  H04N1/64 ,  G09G5/02 ,  G09G5/00

CPC classification number: H04N1/644

Abstract: Disclosed is a method for converting an input digital color image having a set of possible input colors to an output digital color image having a set of palette colors, the number of palette colors being less than the number of possible input colors, wherein the set of palette colors is determined based on the distribution of colors in the input digital image boosted by a distribution of important colors contained in the input digital image.

Abstract translation: 公开了一种用于将具有一组可能输入颜色的输入数字彩色图像转换成具有一组调色板颜色的输出数字彩色图像的方法，调色板颜色的数量小于可能的输入颜色的数量，其中， 调色板颜色是基于通过输入数字图像中包含的重要颜色的分布而增强的输入数字图像中的颜色分布来确定的。

公开(公告)号：US06748106B1

公开(公告)日：2004-06-08

申请号：US09537064

申请日：2000-03-28

Applicant: Robert C. Bryant ,  Kevin E. Spaulding ,  Drew D. Summers

Inventor： Robert C. Bryant ,  Kevin E. Spaulding ,  Drew D. Summers

IPC: G06K900

CPC classification number: H04N1/6058

Abstract: A method for representing an extended color gamut digital image on a hard-copy output medium having a limited color gamut comprising the steps of adjusting the color values of the extended color gamut digital image to fit within the limited color gamut of the output medium to form a limited color gamut digital image, producing a limited color gamut output print from the limited color gamut digital image on the hard-copy output medium, determining a residual image representing a difference between the extended color gamut digital image and the limited color gamut digital image, and encoding the residual image on the output print using a digital encoding means such that the residual image and the limited color gamut output print are adapted to be used to form a reconstructed extended color gamut digital image.

Abstract translation: 一种用于在具有有限色域的硬拷贝输出介质上表示扩展色域数字图像的方法，包括以下步骤：调整扩展色域数字图像的颜色值以适应输出介质的有限色域内形成 有限色域数字图像，从硬拷贝输出介质上的有限色域数字图像产生有限的色域输出打印，确定表示扩展色域数字图像与有限色域数字图像之间的差的残差图像 并且使用数字编码装置对输出打印上的残留图像进行编码，使得残差图像和有限色域输出打印适于用于形成重构的扩展色域数字图像。

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。

公开(公告)号：US5586203A

公开(公告)日：1996-12-17

申请号：US331246

申请日：1994-10-28

Applicant: Kevin E. Spaulding ,  Lawrence A. Ray

Inventor： Kevin E. Spaulding ,  Lawrence A. Ray

IPC: G06T5/00 ,  G09G5/02 ,  H04N1/40 ,  H04N1/405 ,  G06K9/38

CPC classification number: H04N1/40087 ,  H04N1/4051

Abstract: Method and apparatus for generating a halftone image for a multi-level output device employing a dither matrix generated by minimizing a visual cost function. The dither matrix is addressed by the least significant bits of a pixel address and the value supplied by the dither matrix is added to the pixel value. The resulting sum is quantized in a quantizer to produce the multi-level halftone value.

Abstract translation: 用于生成用于通过最小化视觉成本函数产生的抖动矩阵的多级输出装置的半色调图像的方法和装置。 抖动矩阵由像素地址的最低有效位寻址，并且由抖动矩阵提供的值被添加到像素值。 所得到的和在量化器中量化以产生多级半色调值。