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：US07298892B2

公开(公告)日：2007-11-20

申请号：US10410550

申请日：2003-04-09

Applicant: Kevin E. Spaulding ,  Geoffrey J. Woolfe ,  Edward J. Giorgianni

Inventor： Kevin E. Spaulding ,  Geoffrey J. Woolfe ,  Edward J. Giorgianni

IPC: G06K9/00

CPC classification number: H04N1/6077

Abstract: A method for correcting the color balance of an input digital color image in an input color space captured under a capture illuminant to produce a balanced digital color image includes transforming the input digital color image to a balancing color space, wherein the balancing color space has three color channels corresponding to three color space primaries, the color space primaries being chosen so that minimal color errors can be produced when correcting the color balance for a set of one or more capture illuminants relative to aim colors that would be produced if the digital color image were captured under reference conditions; and correcting the color balance of the input digital color image in the balancing color space to produce a balanced digital color image having minimal color errors relative to aim colors that would be produced if the digital color image were captured under reference conditions.

Abstract translation: 一种用于校正在拍摄光源下拍摄的输入彩色空间中的输入数字彩色图像的颜色平衡以产生平衡数字彩色图像的方法，包括将输入数字彩色图像变换为平衡色彩空间，其中平衡色彩空间具有三个 对应于三个颜色空间原色的颜色通道，选择颜色空间原色，使得当校正相对于如果数字彩色图像将产生的目标颜色的一组或多个捕获光源的集合的色彩平衡时，可以产生最小的颜色误差 在参考条件下被捕获; 以及在平衡色彩空间中校正输入数字彩色图像的色彩平衡，以产生相对于在参考条件下拍摄数字彩色图像时将产生的对象颜色具有最小颜色误差的平衡数字彩色图像。

公开(公告)号：US07245395B2

公开(公告)日：2007-07-17

申请号：US10309866

申请日：2002-12-04

Applicant: Douglas W. Couwenhoven ,  Gustav Braun ,  Kevin E. Spaulding ,  Geoffrey J. Woolfe

Inventor： Douglas W. Couwenhoven ,  Gustav Braun ,  Kevin E. Spaulding ,  Geoffrey J. Woolfe

IPC: H04N1/58 ,  H04N1/60 ,  G06K9/00

CPC classification number: H04N1/60 ,  B41J2/16523 ,  B41J2/17593

Abstract: 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.

Abstract translation: 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。

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：US06754384B1

公开(公告)日：2004-06-22

申请号：US09651510

申请日：2000-08-30

Applicant: Kevin E. Spaulding ,  Geoffrey J. Woolfe

Inventor： Kevin E. Spaulding ,  Geoffrey J. Woolfe

IPC: G06K900

CPC classification number: H04N1/6058

Abstract: A method for determining information parameter(s) useful in processing a digital image having color values with an extended color gamut, includes the steps of: adjusting the color values of the extended color gamut digital image to fit within a limited color gamut to form a limited color gamut digital image; determining a residual image representing a difference between the extended color gamut digital image and the limited color gamut digital image; and analyzing the residual image to determine one or more image information parameter(s) related to the information contained in the residual image such parameter(s) being useful in processing the digital image.

Abstract translation: 一种用于确定具有扩展色域的具有颜色值的数字图像处理有用的信息参数的方法，包括以下步骤：调整扩展色域数字图像的颜色值以适应有限色域以形成 有限色域数字图像; 确定表示所述扩展色域数字图像与所述有限色域数字图像之间的差的残差图像; 以及分析残差图像以确定与残留图像中包含的信息相关的一个或多个图像信息参数，所述参数在处理数字图像时是有用的。

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。