公开(公告)号：US08422082B2

公开(公告)日：2013-04-16

申请号：US12507226

申请日：2009-07-22

Applicant: Douglas W. Couwenhoven ,  Kevin E. Spaulding ,  Steven A. Billow

Inventor： Douglas W. Couwenhoven ,  Kevin E. Spaulding ,  Steven A. Billow

IPC: H04N1/407

CPC classification number: H04N1/6022

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08018623B2

公开(公告)日：2011-09-13

申请号：US12040055

申请日：2008-02-29

Applicant: Douglas W. Couwenhoven ,  Kevin E. Spaulding

Inventor： Douglas W. Couwenhoven ,  Kevin E. Spaulding

IPC: G06K15/00

CPC classification number: H04N1/40087 ,  H04N1/4053

Abstract: A method for multi-level error diffusion halftoning an input digital image to form an output digital image with reduced error diffusion texture contouring artifacts which includes modifying the input pixel values for a fraction of the input pixels using a periodic dither signal, where the fraction is a function of the texture artifact characteristics of the multi-level error diffusion halftoning process.

Abstract translation: 一种用于多级误差扩散的方法，用于对输入数字图像进行半色调以形成具有减小的误差扩散纹理轮廓伪迹的输出数字图像，其包括使用周期性抖动信号修改输入像素的一部分输入像素值，其中分数为 多级错误扩散半色调处理的纹理伪影特征的函数。

公开(公告)号：US07873231B2

公开(公告)日：2011-01-18

申请号：US12764406

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: G06K9/40

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。

公开(公告)号：US07064861B2

公开(公告)日：2006-06-20

申请号：US09730217

申请日：2000-12-05

Applicant: Ronald M. Wexler ,  Robert P. Bourdelais ,  Kevin E. Spaulding ,  Robert C. Bryant ,  Drew D. Summers

Inventor： Ronald M. Wexler ,  Robert P. Bourdelais ,  Kevin E. Spaulding ,  Robert C. Bryant ,  Drew D. Summers

IPC: G06K1/00 ,  G06K9/00

CPC classification number: H04N1/64 ,  G03C1/795 ,  G03C1/7954

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.

公开(公告)号：US06775407B1

公开(公告)日：2004-08-10

申请号：US09631348

申请日：2000-08-02

Applicant: Edward B. Gindele ,  Kevin E. Spaulding

Inventor： Edward B. Gindele ,  Kevin E. Spaulding

IPC: G06K936

CPC classification number: H04N1/3871 ,  H04N1/32

Abstract: A method for processing a digital image in a distributed manner to produce a final modified digital image includes providing a source digital image at a first computer, providing the source digital image at a second computer, and modifying the source digital image at the second computer to form a first modified digital image. The method further includes determining a difference digital image representing the difference between the source digital image and the first modified digital image, transferring the difference digital image to the first computer, and combining the difference digital image with the source digital image at the first computer to form the final modified digital image.

Abstract translation: 以分布式方式处理数字图像以产生最终修改的数字图像的方法包括在第一计算机处提供源数字图像，在第二计算机处提供源数字图像，并将第二计算机处的源数字图像修改为 形成第一个修改后的数字图像。 该方法还包括确定表示源数字图像与第一修改数字图像之间的差异的差分数字图像，将差分数字图像传送到第一计算机，以及将差分数字图像与第一计算机处的源数字图像组合， 形成最终修改的数字图像。

公开(公告)号：US06760485B1

公开(公告)日：2004-07-06

申请号：US09315278

申请日：1999-05-20

Applicant: Paul B. Gilman ,  Kenneth A. Parulski ,  Kevin E. Spaulding ,  Robert P. Collette ,  John F. Hamilton

Inventor： Paul B. Gilman ,  Kenneth A. Parulski ,  Kevin E. Spaulding ,  Robert P. Collette ,  John F. Hamilton

IPC: G06K940

CPC classification number: G06T5/009 ,  G06T2207/10144

Abstract: A method for correcting for exposure in a digital image, captured by an image capture device, including rendering such captured digital image suitable for display and displaying such captured digital image as a first displayed digital image; and using an adjustable exposure setting to nonlinearly modify the rendered captured digital image to effect an exposure change and displaying the exposure modified rendered captured digital image as a second digital image simultaneous with the first displayed digital image.

Abstract translation: 一种用于校正由图像捕获装置拍摄的数字图像中的曝光的方法，包括：渲染适合于显示的所述数字图像并显示与第一显示数字图像相关的所述数字图像; 并且使用可调节曝光设置来非线性地修改所渲染的所拍摄的数字图像以实现曝光改变，并且与第一显示的数字图像同时显示作为第二数字图像的曝光修改的被渲染的数字图像。

公开(公告)号：US06271936B1

公开(公告)日：2001-08-07

申请号：US09210311

申请日：1998-12-11

Applicant: Qing Yu ,  Kevin E. Spaulding

Inventor： Qing Yu ,  Kevin E. Spaulding

IPC: H04N1405

CPC classification number: H04N1/4053 ,  H04N1/40087

Abstract: A new multitoning technique is proposed that combines error diffusion, blue-noise dithering and over-modulation in an adaptive algorithm to achieve high quality multilevel printing with smooth texture transition. A periodic dither signal is first added to an input digital image wherein the amplitude of the periodic dither signal is a function of the input pixel value for each input pixel. The amplitude of the periodic dither signal is larger for input pixel values near the N output levels, and the amplitude of the periodic dither signal is smaller for input pixel values intermediate to the N output levels to produce a modified input image. Then, a multi-level error diffusion halftoning algorithm is applied to the modified input image wherein the error diffusion halftoning algorithm uses a set of error feedback weights which are adjusted according to the original input pixel value for each input pixel. The sum of the error feedback weights is smaller for input pixel values near the N output levels, and the sum of the error feedback weights is larger for input pixel values intermediate to the N output levels to produce an output multi-level digital image.

Abstract translation: 提出了一种新的多线程技术，将自适应算法中的误差扩散，蓝噪声抖动和过调制相结合，实现了平滑纹理转换的高质量多层次打印。 周期性抖动信号首先被添加到输入数字图像中，其中周期性抖动信号的幅度是每个输入像素的输入像素值的函数。 周期性抖动信号的幅度对于接近N个输出电平的输入像素值较大，并且周期性抖动信号的幅度对于在N个输出电平之间的输入像素值较小，以产生经修改的输入图像。 然后，将多级误差扩散半色调算法应用于经修改的输入图像，其中误差扩散半色调算法使用根据每个输入像素的原始输入像素值调整的一组误差反馈权重。 误差反馈权重的和对于N个输出电平附近的输入像素值较小，并且对于N个输出电平之间的输入像素值，误差反馈权重之和较大，以产生输出多电平数字图像。

公开(公告)号：US5986771A

公开(公告)日：1999-11-16

申请号：US934372

申请日：1997-09-19

Applicant: Todd R. Henderson ,  Kevin E. Spaulding ,  Douglas W. Couwenhoven

Inventor： Todd R. Henderson ,  Kevin E. Spaulding ,  Douglas W. Couwenhoven

IPC: H04N1/62 ,  H04N1/40

CPC classification number: H04N1/62

Abstract: A method for determining a control signal for use in combining a first digital image that includes both a foreground region and a key color region having an associated key color with a second background digital image, both images including pixels having color values is disclosed. The method includes segmenting the first digital image into a foreground region and a key color region; and identifying transition region pixels in the first digital image that are in the vicinity of a boundary between the segmented foreground region and the segmented key color region. The method further includes computing a color difference signal between the color values of the first digital image and the key color for at least some pixels in the transition region; and computing a control signal for transition region pixels as a function of the color difference signal, where the control signal is to be used to combine the foreground region of the first digital image with the second background digital image.

Abstract translation: 公开了一种用于确定控制信号的方法，用于将包括前景区域和具有相关联的键颜色的键颜色区域的第一数字图像与第二背景数字图像组合在一起，包括具有颜色值的像素的两个图像。 该方法包括将第一数字图像分割成前景区域和键颜色区域; 以及识别在所述第一数字图像中处于所述分割的前景区域和所述分割的键颜色区域之间的边界附近的过渡区域像素。 该方法还包括计算过渡区域中的至少一些像素的第一数字图像的颜色值和键颜色之间的色差信号; 以及计算作为所述色差信号的函数的过渡区域像素的控制信号，其中所述控制信号将用于将所述第一数字图像的前景区域与所述第二背景数字图像组合。

公开(公告)号：US5949967A

公开(公告)日：1999-09-07

申请号：US989557

申请日：1997-12-12

Applicant: Kevin E. Spaulding ,  Kevin C. Scott

Inventor： Kevin E. Spaulding ,  Kevin C. Scott

IPC: H04N1/60 ,  G06F15/00

CPC classification number: H04N1/6058 ,  H04N1/6033

Abstract: A method for transforming input color values to device control signals for a color printing device having an output response that is approximately invariant for ranges of the device control signals near the maximum or minimum allowable device control signals, wherein the input color values are transformed into the device control signals that are to be used to reproduce the input color values is disclosed. The method includes determining color reproduction characteristics for the color printing device over an allowable range of input signal values; determining a full color gamut for the color printing device describing a full range of color values that can be produced by the color printing device; creating a reduced color gamut by shrinking the full color gamut; and transforming the input color values to the device control signals using the determined color reproduction characteristics of the color printing device, wherein the input color values that are outside the reduced color gamut are mapped to color values that are on or within the reduced color gamut.

Abstract translation: 一种用于将输入颜色值变换为用于彩色打印装置的装置控制信号的方法，所述彩色打印装置的输出响应对于最大或最小允许装置控制信号附近的装置控制信号的范围近似不变，其中输入的颜色值被变换为 公开了要用于再现输入颜色值的设备控制信号。 该方法包括：在输入信号值的允许范围内确定彩色打印装置的色彩再现特性; 确定彩色打印装置的全色域，描述可由彩色打印装置产生的全部颜色值范围; 通过缩小全色域来产生降低的色域; 以及使用所确定的彩色打印设备的颜色再现特性将输入颜色值转换为设备控制信号，其中在缩小色域之外的输入颜色值被映射到在缩小色域之上或之内的颜色值。

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

IPC: B41J2/52 ,  G06T5/00 ,  G06T11/20 ,  H04N1/405 ,  B41J15/00

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。