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）。

公开(公告)号：US06335983B1

公开(公告)日：2002-01-01

申请号：US09162051

申请日：1998-09-28

Applicant: Ann L. McCarthy ,  Kevin E. Spaulding ,  Edward J. Giorgianni

Inventor： Ann L. McCarthy ,  Kevin E. Spaulding ,  Edward J. Giorgianni

IPC: G06K900

CPC classification number: G06T11/001 ,  H04N1/6058

Abstract: A method for representing a digital image having color values with an extended color gamut in a storage color space having a limited color gamut including providing a color adjustment function; adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image using the color adjustment function; representing the limited color gamut digital image in the storage color space; and associating information about the color adjustment function with the limited color gamut digital image in the storage color space such that the associated information and the limited color gamut digital image are adapted to produce a reconstructed extended color gamut digital image.

Abstract translation: 一种用于在包括提供颜色调整功能的具有有限色域的存储颜色空间中表示具有扩展色域的具有颜色值的数字图像的方法; 调整扩展色域数字图像的颜色值以适应有限色域，以使用颜色调整功能形成有限色域数字图像; 表示存储颜色空间中的有限色域数字图像; 以及将关于颜色调整功能的信息与存储颜色空间中的有限色域数字图像相关联，使得相关信息和有限色域数字图像适于产生重建的扩展色域数字图像。

公开(公告)号：US06285784B1

公开(公告)日：2001-09-04

申请号：US09162234

申请日：1998-09-28

Applicant: Kevin E. Spaulding ,  Ann L. McCarthy ,  Edward J. Giorgianni

Inventor： Kevin E. Spaulding ,  Ann L. McCarthy ,  Edward J. Giorgianni

IPC: G06K900

CPC classification number: H04N1/6058 ,  G06T11/001

Abstract: A method for modifying a digital image having color values with an extended color gamut comprising the steps of representing the extended color gamut digital image with a limited color gamut digital image and one or more associated residual image(s) representing a difference between the extended color gamut digital image and the limited color gamut digital image; specifying one or more desired image modification(s) to be applied to the extended color gamut digital image; and modifying the limited color gamut digital image and the residual image(s) to form a modified limited color gamut digital image and one or more modified residual image(s) in response to the specified desired image modification(s).

Abstract translation: 一种用于修改具有扩展色域的具有颜色值的数字图像的方法，包括以下步骤：用有限色域数字图像和一个或多个相关联的残留图像表示扩展色域数字图像，所述一个或多个相关联的残留图像表示扩展颜色 色域数字图像和有限色域数字图像; 指定要应用于扩展色域数字图像的一个或多个期望的图像修改; 以及修改所述有限色域数字图像和残余图像以形成修改的限制色域数字图像和响应于所述指定的所需图像修改的一个或多个修改的残差图像。

公开(公告)号：US06282311B1

公开(公告)日：2001-08-28

申请号：US09162026

申请日：1998-09-28

Applicant: Ann L. McCarthy ,  Kevin E. Spaulding ,  Edward J. Giorgianni

Inventor： Ann L. McCarthy ,  Kevin E. Spaulding ,  Edward J. Giorgianni

IPC: G06K900

CPC classification number: H04N1/6058 ,  G06T11/001

Abstract: A method for representing a digital image having color values with an extended color gamut in a storage color space having a limited color gamut includes adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; representing the limited color gamut digital image in the storage color space; determining a residual image representing a difference between the extended color gamut digital image and the limited color gamut digital image; and associating the residual image with the limited color gamut digital image in the storage color space such that the associated residual image and the limited color gamut digital image in the storage color space 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存储颜色空间中表示具有扩展色域的具有颜色值的数字图像的方法包括：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; 表示存储颜色空间中的有限色域数字图像; 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; 以及将所述残留图像与所述存储颜色空间中的所述有限色域数字图像相关联，使得所述相关联的残留图像和所述存储颜色空间中的所述有限色域数字图像适于用于形成重构的扩展色域数字图像。

公开(公告)号：US5859927A

公开(公告)日：1999-01-12

申请号：US856618

申请日：1997-05-13

Applicant: James E. Adams ,  Kevin E. Spaulding ,  Kenneth A. Parulski

Inventor： James E. Adams ,  Kevin E. Spaulding ,  Kenneth A. Parulski

IPC: H04N5/91 ,  G06F17/17 ,  G06T9/00 ,  H04N5/92 ,  H04N7/26 ,  G06K9/00 ,  G06K9/36 ,  G06K9/46 ,  G06K9/48

CPC classification number: G06T9/00 ,  G06T9/001

Abstract: A method for compressing a first bit digital input representative of first pixel data into a second bit digital output representative of second pixel data, the method comprises the steps of defining a logarithmic function for converting the first bit digital input into the second bit digital output; replacing a portion of the logarithmic function with a polynomial function; and compressing the first bit digital input into the second bit digital output by utilizing the logarithmic and polynomial function.

Abstract translation: 一种用于将表示第一像素数据的第一位数字输入压缩为表示第二像素数据的第二位数字输出的方法，所述方法包括以下步骤：定义用于将第一位数字输入转换为第二位数字输出的对数函数; 用多项式函数代替一部分对数函数; 并通过利用对数和多项式函数将第一位数字输入压缩成第二位数字输出。

公开(公告)号：US5774639A

公开(公告)日：1998-06-30

申请号：US390616

申请日：1995-02-17

Applicant: Jay S. Schildkraut ,  Kevin E. Spaulding ,  John P. Spence

Inventor： Jay S. Schildkraut ,  Kevin E. Spaulding ,  John P. Spence

IPC: B41J31/00 ,  B41J2/325 ,  B41M5/382 ,  G06K15/00

CPC classification number: B41M5/38207 ,  B41J2/325

Abstract: Sensitometric information is stored with a consumable print medium having a predetermined sensitometry by compressing the sensitometric information as a set of spline coefficients for use with a printer adapted to decode the set of spline coefficients to construct a sensitometric curve. A set of spline coefficients is generated, spline coefficients are encoded, and the encoded spline coefficients are stored in a manner which is accessible to a printing device adapted to make use of the media sensitometry data for purposes of device calibration. The coefficient-generating step comprises fitting a spline curve to the sensitometry data. The spline curve may be monotonic cubic. The encoding step may include encoding a difference signal representing a difference between input values for a set of sequential spline knots. The encoding step may also include encoding a difference signal representing a difference between the output values of the sensitometry curve and output values of a reference sensitometry curve for each of a set of sequential spline knots. The difference signal may be encoded by quantizing the difference signal into a set of discrete bins.

Abstract translation: 敏感测量信息与具有预定感光度的消耗性打印介质一起存储，通过将感光度信息作为一组样条系数进行压缩，以便与用于解码该组样条系数的打印机一起构成感光度曲线。 产生一组样条系数，对样条系数进行编码，并且编码的样条系数以适于利用介质感光度数据的打印装置可访问的方式存储，用于设备校准。 系数生成步骤包括将样条曲线拟合到感光测量数据。 样条曲线可能是单调立方体。 编码步骤可以包括编码表示一组连续样条结的输入值之间的差的差信号。 编码步骤还可以包括编码表示感光度曲线的输出值与一组连续样条结中的每一个的参考感光度曲线的输出值之间的差异的差分信号。 可以通过将差分信号量化为一组离散区段来对差分信号进行编码。

公开(公告)号：US5604610A

公开(公告)日：1997-02-18

申请号：US333828

申请日：1994-11-03

Applicant: Kevin E. Spaulding ,  James R. Sullivan

Inventor： Kevin E. Spaulding ,  James R. Sullivan

IPC: H04N1/60 ,  H04N1/46 ,  G03F3/08

CPC classification number: H04N1/6027 ,  H04N1/60 ,  H04N1/6019

Abstract: A method for transforming input color values of a digital image to produce suitable output color values for use by a particular device is disclosed. In this method a plurality of color transforms are stored, each such transform responds to input color values of a digital image and produces output color values which can be used by the particular device. In the method an intermediate transform which is user desirable for transforming the input color values is formed by interpolating between the plurality of transforms.

Abstract translation: 公开了一种用于变换数字图像的输入颜色值以产生由特定装置使用的合适的输出颜色值的方法。 在该方法中，存储多个颜色变换，每个这样的变换对数字图像的输入颜色值进行响应，并产生特定装置可以使用的输出颜色值。 在该方法中，通过在多个变换之间进行内插来形成用户希望用于变换输入颜色值的中间变换。

公开(公告)号：US5583666A

公开(公告)日：1996-12-10

申请号：US390157

申请日：1995-02-16

Applicant: Richard N. Ellson ,  Kevin E. Spaulding ,  Andrew H. Mutz ,  Ron Gershon

Inventor： Richard N. Ellson ,  Kevin E. Spaulding ,  Andrew H. Mutz ,  Ron Gershon

IPC: G06T1/00 ,  H04N1/46 ,  H04N1/60 ,  H04N1/62 ,  G02B7/00 ,  G02B5/12 ,  G09G5/04 ,  H04N9/64

CPC classification number: H04N1/62 ,  H04N1/6058

Abstract: This invention provides a method for transforming an input color space to an output color space where each of a plurality of specified colors and/or color regions are constrained to be transformed by any one of a plurality of explicitly specified color calibration or color enhancement strategies. The method involves a two step process: 1) constraints are applied to some subset of the points in the input color space explicitly specifying the transform into the output color space; 2) the reminder of the points are then transformed by a mapping strategy which preserves color continuity. The mapping strategy used in the preferred embodiment is based on a computer graphics geometric morphing technique. In the preferred embodiment, multi-dimensional look-up tables are used to implement the color transformation.

Abstract translation: 本发明提供了一种用于将输入颜色空间转换为输出颜色空间的方法，其中多个指定颜色和/或颜色区域中的每一个被约束以通过多个明确指定的颜色校准或颜色增强策略中的任何一个进行变换。 该方法涉及两步过程：1）将约束应用于输入颜色空间中的某些点的子集，明确地将变换指定为输出颜色空间; 2）然后通过保持颜色连续性的映射策略来转换点的提醒。 在优选实施例中使用的映射策略基于计算机图形几何变形技术。 在优选实施例中，使用多维查找表来实现颜色变换。