公开(公告)号：US09706085B1

公开(公告)日：2017-07-11

申请号：US15160617

申请日：2016-05-20

Applicant: Xerox Corporation

Inventor： Guo-Yau Lin ,  James Michael Sanchez ,  Michael R. Campanelli ,  David C. Robinson ,  Raju Seetharam ,  David E. Rumph

IPC: H04N1/60

CPC classification number: H04N1/6066 ,  H04N1/54 ,  H04N1/6008 ,  H04N2201/0094

Abstract: A system and method for automatic selection of at least one spot color to be processed by a digital image press includes identifying process colorants to determine principal and extended gamuts thereof. Spot color recipes of the principal and extended gamuts are retrieved from a spot color library, along with a set of attributes corresponding to use of colorants by the digital image press. For each spot color recipe, a combined attribute score is calculated relating to the principal gamut and the extended gamut, spot color recipe of the extended gamut or principal gamut is then identified for use based upon which has the higher combined attribute score. The spot color library is then updated in accordance with the identified recipe for production of each spot color. Print jobs are then output with the appropriate spot color recipe automatically selected.

公开(公告)号：US08982413B2

公开(公告)日：2015-03-17

申请号：US13828462

申请日：2013-03-14

Applicant: Xerox Corporation

Inventor： Guo-Yau Lin ,  James Michael Sanchez

IPC: G06K1/00 ,  G06K15/02 ,  G09G5/02 ,  B41J2/205 ,  G06K9/00

CPC classification number: G06K15/1878 ,  G03G15/5062 ,  H04N1/605

Abstract: Methods and systems for dynamically detecting and switching profiling configuration in digital rendering. A set of color patches utilized for profiling can be rendered via a calibration engine and the color patches can be measured via inline/offline spectrophotometer. A high-accuracy MFD model can be built based on measurement from the color patches. A set of measurement values for a set of CMYK color probes can be obtained directly from the measurement and/or by processing through a MFD model. A classifier can be configured to determine a toner set based on the predicted and/or measured Lab values. The profiling procedure then automatically sets up a parameter set for the corresponding toner set to build a color look-up table via an inversion and optimization function. A destination ICC profile can be built based on the color LUTs. The system can handle multiple toner sets and produce optimized color outcome for each toner set.

Abstract translation: 在数字渲染中动态检测和切换配置文件的方法和系统。 用于分析的一组色块可以通过校准引擎进行渲染，并且可以通过在线/离线分光光度计测量色标。 可以根据色块的测量建立高精度MFD模型。 可以直接从测量和/或通过MFD模型处理获得一组CMYK彩色探针的一组测量值。 分类器可以被配置为基于预测和/或测量的Lab值来确定调色剂组。 分析程序然后自动设置相应调色剂组的参数组，以通过反演和优化功能构建颜色查找表。 可以基于颜色LUT构建目的地ICC简档。 该系统可以处理多个墨粉盒，并为每个墨粉组产生优化的颜色结果。

公开(公告)号：US09014472B2

公开(公告)日：2015-04-21

申请号：US13837682

申请日：2013-03-15

Applicant: Xerox Corporation

Inventor： Guo-Yau Lin ,  James Michael Sanchez

IPC: G06K9/00 ,  G06T11/00

CPC classification number: G06T11/001

Abstract: Methods, systems and processor-readable media for color balanced compression in dynamic range mistmatched color environments. An input L* can be compensated based on L*min in a destination space with respect to shadow colors while configuring a perceptual LUT during a profile phase. Input opponent color components a* and b* can be compressed based on how much L* is compensated to generate newly compressed L*a*b* values. The newly compressed L*a*b* values can be treated as an output L*a*b* to configure the perceptual LUT for color balanced compression thereof. Finally, an operation can be performed for recording in the output LUT, optimized CMYK values with respect to the output L*a*b* to configure the perceptual LUT in an ICC profile and result in the color balanced compression thereof.

Abstract translation: 用于动态范围色差环境中颜色平衡压缩的方法，系统和处理器可读介质。 输入L *可以基于相对于阴影颜色的目的地空间中的L * min进行补偿，同时在轮廓阶段期间配置感知LUT。 输入对方颜色分量a *和b *可以根据补偿多少L *来产生新压缩的L * a * b *值进行压缩。 新压缩的L * a * b *值可以被视为输出L * a * b *来配置感知LUT以进行颜色平衡压缩。 最后，可以执行用于在输出LUT中记录的操作，相对于输出L * a * b *优化的CMYK值来配置ICC简档中的感知LUT，并且导致其颜色平衡压缩。

公开(公告)号：US08913311B1

公开(公告)日：2014-12-16

申请号：US14020005

申请日：2013-09-06

Applicant: Xerox Corporation

Inventor： James Michael Sanchez ,  Guo-Yau Lin ,  David C. Robinson

IPC: H04N1/60

CPC classification number: H04N1/603 ,  H04N1/6058

Abstract: Disclosed is a processor-implemented method for limiting ink output of marked image data using a target printer. A processor determines a constrained output (CMYK) LUT node data set for outputting the image data using the target printer to thereby mark the image data using a limited amount of ink. The constrained set is determined by re-encoding an encoded emulation output data, i.e., constraining an initial LUT node data set for the target printer based on a second. ICC profile with a smaller gamut. This allows the printer to inherit the smaller gamut. By constraining the initial LUT as disclosed herein, the final, constrained set emulates the smaller gamut in the target printer without suffering from pathological outcomes. The method enables the printer to inherit a natural ink limit methodology for the output colors that is more relatively proportional, and in a single destination profile.

Abstract translation: 公开了一种处理器实现的方法，用于使用目标打印机来限制标记图像数据的墨水输出。 处理器确定用于使用目标打印机输出图像数据的约束输出（CMYK）LUT节点数据集，从而使用有限量的墨水来标记图像数据。 通过对编码的仿真输出数据进行重新编码来确定约束集合，即基于第二步骤约束目标打印机的初始LUT节点数据集。 具有较小色域的ICC配置文件。 这允许打印机继承较小的色域。 通过限制如本文所公开的初始LUT，最终的约束集合模拟目标打印机中较小的色域，而不会患有病理结果。 该方法使得打印机能够继承自然的墨水限制方法，用于比较成比例的输出颜色，并且在单个目的地简档中。

公开(公告)号：US10057458B2

公开(公告)日：2018-08-21

申请号：US14858680

申请日：2015-09-18

Applicant: Xerox Corporation

Inventor： James Michael Sanchez ,  Guo-Yau Lin

IPC: H04N1/40 ,  H04N1/60

CPC classification number: H04N1/40012 ,  H04N1/6008

Abstract: A method, apparatus and non-transitory computer readable medium for printing in grayscale are disclosed. For example, the method includes receiving a source profile of a color image, converting the source profile into a device specific color space profile, converting the device specific color space profile into a grayscale device specific color space profile that only has black separation values for each output node using a destination profile that is device specific and printing the color image in a grayscale using the grayscale device specific color profile that reproduces a tone of each color of the source profile of the color image.

公开(公告)号：US20140270510A1

公开(公告)日：2014-09-18

申请号：US13837682

申请日：2013-03-15

Applicant: XEROX CORPORATION

Inventor： Guo-Yau Lin ,  James Michael Sanchez

IPC: G06T11/00

CPC classification number: G06T11/001

Abstract: Methods, systems and processor-readable media for color balanced compression in dynamic range mistmatched color environments. An input L* can be compensated based on L*min in a destination space with respect to shadow colors while configuring a perceptual LUT during a profile phase. Input opponent color components a* and b* can be compressed based on how much L* is compensated to generate newly compressed L*a*b* values. The newly compressed L*a*b* values can be treated as an output L*a*b* to configure the perceptual LUT for color balanced compression thereof. Finally, an operation can be performed for recording in the output LUT, optimized CMYK values with respect to the output L*a*b* to configure the perceptual LUT in an ICC profile and result in the color balanced compression thereof.

Abstract translation: 用于动态范围色差环境中颜色平衡压缩的方法，系统和处理器可读介质。 输入L *可以基于相对于阴影颜色的目的地空间中的L * min进行补偿，同时在轮廓阶段期间配置感知LUT。 输入对方颜色分量a *和b *可以根据补偿多少L *来产生新压缩的L * a * b *值进行压缩。 新压缩的L * a * b *值可以被视为输出L * a * b *来配置感知LUT以进行颜色平衡压缩。 最后，可以执行用于在输出LUT中记录的操作，相对于输出L * a * b *优化的CMYK值来配置ICC简档中的感知LUT，并且导致其颜色平衡压缩。

公开(公告)号：US20140268191A1

公开(公告)日：2014-09-18

申请号：US13828462

申请日：2013-03-14

Applicant: XEROX CORPORATION

Inventor： Guo-Yau Lin ,  James Michael Sanchez

IPC: G06K15/02

CPC classification number: G06K15/1878 ,  G03G15/5062 ,  H04N1/605

Abstract: Methods and systems for dynamically detecting and switching profiling configuration in digital rendering. A set of color patches utilized for profiling can be rendered via a calibration engine and the color patches can be measured via inline/offline spectrophotometer. A high-accuracy MFD model can be built based on measurement from the color patches. A set of measurement values for a set of CMYK color probes can be obtained directly from the measurement and/or by processing through a MFD model. A classifier can be configured to determine a toner set based on the predicted and/or measured Lab values. The profiling procedure then automatically sets up a parameter set for the corresponding toner set to build a color look-up table via an inversion and optimization function. A destination ICC profile can be built based on the color LUTs. The system can handle multiple toner sets and produce optimized color outcome for each toner set.

Abstract translation: 在数字渲染中动态检测和切换配置文件的方法和系统。 用于分析的一组色块可以通过校准引擎进行渲染，并且可以通过在线/离线分光光度计测量色标。 可以根据色块的测量建立高精度MFD模型。 可以直接从测量和/或通过MFD模型处理获得一组CMYK彩色探针的一组测量值。 分类器可以被配置为基于预测和/或测量的Lab值来确定调色剂组。 分析程序然后自动设置相应调色剂组的参数组，以通过反演和优化功能构建颜色查找表。 可以基于颜色LUT构建目的地ICC简档。 该系统可以处理多个墨粉盒，并为每个墨粉组产生优化的颜色结果。