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    Adaptive illumination independent matching of out of gamut spot colors using various gamut mapping techniques
    31.
    发明授权
    Adaptive illumination independent matching of out of gamut spot colors using various gamut mapping techniques 有权
    使用各种色域映射技术的色域专色之间的自适应照明独立匹配

    公开(公告)号：US08456698B2

    公开(公告)日：2013-06-04

    申请号：US12533542

    申请日：2009-07-31

    申请人： Alvaro E. Gil ,  Yao Rong Wang ,  Lalit Keshav Mestha

    发明人： Alvaro E. Gil ,  Yao Rong Wang ,  Lalit Keshav Mestha

    IPC分类号： G06F15/00 ,  H04N1/40 ,  G06K9/00

    CPC分类号： H04N1/54 ,  H04N1/6052 ,  H04N1/6088

    摘要： A methodology is disclosed to achieve adaptive illumination independent matching of out-of-gamut spot colors. In one embodiment, the methodology includes an iterative process to determine a variety device specific recipes for out-of-gamut spot colors across different illumination spectra and gamut mapping techniques, and then automatically choosing and/or recommending the optimal recipe and gamut mapping technique that provides the lowest color dispersion across a variety of illuminants under consideration.

    摘要翻译： 公开了一种用于实现色域外色彩的自适应照明独立匹配的方法。 在一个实施例中，该方法包括迭代过程，以确定跨不同照明光谱和色域映射技术的色域外色彩的特定配方，然后自动选择和/或推荐最佳配方和色域映射技术， 在考虑的各种光源下提供最低的色散。

    UPDATING A FLEET CMYK TO ENGINE cmyk LUT IN A COLOR MANAGEMENT STRATEGY
    32.
    发明申请
    UPDATING A FLEET CMYK TO ENGINE cmyk LUT IN A COLOR MANAGEMENT STRATEGY 有权
    在颜色管理策略中更新发布CMYK LUT的FLEET CMYK

    公开(公告)号：US20120212752A1

    公开(公告)日：2012-08-23

    申请号：US13029753

    申请日：2011-02-17

    申请人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Martin S. Maltz

    发明人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Martin S. Maltz

    IPC分类号： H04N1/60

    CPC分类号： H04N1/6016 ,  H04N1/40006

    摘要： What is disclosed is a system and method which addresses the problem of inheriting color management intent from a fleet color management LUT into a 4-to-4 cascaded LUT. The LUT is updated starting with a set of patches that either form a uniform or non-uniform grid of the LUT or can be projected to a uniform or non-uniform grid in the CMYK space using, e.g., PCA. A set of L*a*b* target as well a variable that serve the purpose of preserving the GCR and other elements of the fleet profile is obtained by passing the set of CMYK values to the fleet printer model. By iterating on the printer (or the printer model of the engine at the moment of the engine change) and converging to the targets, the engine device cmyk set is obtained. The LUT is formed between the uniform or non-uniform gridded CMYK and the device cmyk.

    摘要翻译： 公开的是一种系统和方法，其解决将车队颜色管理LUT的颜色管理意图从继承到4对4级联LUT的问题。 LUT以从LUT的统一或非均匀网格形成的一组补丁开始更新，或者使用例如PCA将其投影到CMYK空间中的均匀或非均匀网格。 通过将一组CMYK值传递给车队打印机模型，获得一组L * a * b *目标以及用于保存GCR和船队简档的其他元素的变量。 通过在打印机（或发动机更换时刻的发动机的打印机型号）上迭代并收敛到目标，获得发动机装置cmyk组。 LUT在均匀或不均匀的网格CMYK和设备cmyk之间形成。

    Method and system for identifying optimal media for calibration and control
    33.
    发明授权
    Method and system for identifying optimal media for calibration and control 失效
    用于识别用于校准和控制的最佳介质的方法和系统

    公开(公告)号：US07969624B2

    公开(公告)日：2011-06-28

    申请号：US11636747

    申请日：2006-12-11

    申请人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Zhigang Fan ,  Alvaro Enrique Gil

    发明人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Zhigang Fan ,  Alvaro Enrique Gil

    IPC分类号： H04N1/46 ,  H04N1/00

    CPC分类号： H04N1/6033 ,  H04N1/6097

    摘要： Disclosed herein are optimal or near optimal algorithms implemented as software tools that will allow the user/machine to identify optimal media out of the job set automatically. There are at least two main process steps to the exemplary embodiment. The first step involves the off-line characterization of the printing/image rendering system that will be used to extract the principal basis vectors from the experimental data. The second step involves the run-time mode, in which the pre-characterized basis vectors are used in conjunction with an optimal algorithm that will identify the media for re-calibration/re-characterization from the group of media set that the customer is interested to print. The optimal algorithm performs the combinatorial search every time the customer wishes to select the media. Once the optimal media is selected, the customer or the machine can print color patches (which are also optimal set) and execute the rest of the processing to reconstruct the best color management LUTs.

    摘要翻译： 这里公开的是作为软件工具实现的最佳或近似最优算法，其将允许用户/机器自动地识别作业集合中的最佳媒体。 至于示例性实施例的至少两个主要处理步骤。 第一步涉及打印/图像渲染系统的离线表征，该系统将用于从实验数据中提取主基础向量。 第二步涉及运行时模式，其中预特征基本向量与最佳算法结合使用，该算法将识别媒体用于从客户感兴趣的媒体集合进行重新校准/重新表征 打印。 每当客户希望选择媒体时，最优算法执行组合搜索。 一旦选择了最佳介质，客户或机器可以打印色块（也是最佳组合），并执行其余处理以重构最佳色彩管理LUT。

    REFERENCE COLOR DIFFERENCE QUANTITY GUIDE FOR SPOT COLOR APPLICATIONS
    34.
    发明申请
    REFERENCE COLOR DIFFERENCE QUANTITY GUIDE FOR SPOT COLOR APPLICATIONS 有权
    点颜色应用的参考颜色差异量子指南

    公开(公告)号：US20110149313A1

    公开(公告)日：2011-06-23

    申请号：US12645875

    申请日：2009-12-23

    申请人： Lalit Keshav Mestha ,  Yonghui Zhao ,  Yao Rong Wang

    发明人： Lalit Keshav Mestha ,  Yonghui Zhao ,  Yao Rong Wang

    IPC分类号： G06F15/00

    CPC分类号： H04N1/62 ,  H04N1/6033

    摘要： What is disclosed is a novel system and method for generating a reference color difference quantity guide for spot color print applications. RCDQ values are determined for spot colors obtained from a library of spot colors. A reference color difference quantity guide is created from the spot colors and their respective RCDQ values in a manner more fully disclosed herein. Thereafter, when a user desires to render a job in a particular spot color, the associated RCDQ value for that spot color can be obtained from the reference color difference quantity guide. In various embodiments, recommendations in the form of a suggested printer to use, a media type, a halftone screen, and other meaningful assistance can be provided for selection of spot colors for a given print/copy job that are less sensitive to varying illuminations. The present RCDQ guide provides meaningful extensions in color reproduction in diverse print/copy job environments.

    摘要翻译： 所公开的是用于产生用于专色印刷应用的参考色差量指南的新型系统和方法。 确定从专色库获得的专色的RCDQ值。 以这里更全面地公开的方式，从专色和它们各自的RCDQ值创建参考色差量指南。 此后，当用户期望以特定专色呈现作品时，可以从参考色差量指南获得该专色的相关RCDQ值。 在各种实施例中，可以提供建议的打印机使用形式的建议，媒体类型，半色调屏幕和其他有意义的帮助，以选择对变化的照明不太敏感的给定打印/复印作业。 目前的RCDQ指南在不同的打印/复印作业环境中提供了色彩再现的有意义的扩展。

    Optimal test patch selection for multi-media printing systems using low rank approximation
    35.
    发明授权
    Optimal test patch selection for multi-media printing systems using low rank approximation 失效
    使用低等级近似的多媒体打印系统的最佳测试补丁选择

    公开(公告)号：US07639410B2

    公开(公告)日：2009-12-29

    申请号：US11636841

    申请日：2006-12-11

    申请人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

    发明人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

    IPC分类号： H04N1/46 ,  G03F3/08

    CPC分类号： H04N1/00002 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/0009

    摘要： The exemplary embodiment disclosed herein comprises several aspects of defining and using optimal color test patches for calibrating a printing system for various purposes (e.g., multi-media, gamut extension, drifting correction, etc.). One aspect is the creation and use of color patches where the color patches are selected optimally to result in minimum mean square error when those color patches are used to determine weights of a limited number of basis vectors that model the system (e.g., model the print engine response). A joint optimization technique is given as a method to select the optimal color test patches for calibration.

    摘要翻译： 本文公开的示例性实施例包括限定和使用用于校准用于各种目的（例如，多媒体，色域扩展，漂移校正等）的打印系统的最佳颜色测试贴片的几个方面。 一个方面是色彩补丁的创建和使用，其中最佳地选择色块以产生最小均方误差，当使用这些色块来确定对系统进行建模的有限数量的基向量的权重（例如，模拟打印 发动机响应）。 给出联合优化技术作为选择用于校准的最佳颜色测试贴片的方法。

    Methodology for developing color models and printer sensitivity functions for spot colors and profiles
    38.
    发明申请
    Methodology for developing color models and printer sensitivity functions for spot colors and profiles 有权
    用于开发色彩模型和打印机灵敏度功能的专色和配置文件的方法

    公开(公告)号：US20090251712A1

    公开(公告)日：2009-10-08

    申请号：US12061137

    申请日：2008-04-02

    申请人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Alvaro Enrique Gil

    发明人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Alvaro Enrique Gil

    IPC分类号： H04N1/60 ,  G06K1/00

    CPC分类号： H04N1/6033

    摘要： A method and system is disclosed for developing a printer model from a reduced set of selected test patches. The model corresponds to a spot color editor controller having a sensitivity matrix model developed from a plurality of the patches to define printer operation. The sensitivity matrix is comprised of coefficients computed from an orthogonal disposition of the experimental patches within a selected sub gamut of the color printer gamut. A plurality of replicas of the experimental patches are run for achieving statistical significance.

    摘要翻译： 公开了一种从减少的一组选定的测试补丁开发打印机模型的方法和系统。 该模型对应于具有从多个补丁开发的灵敏度矩阵模型的专色编辑器控制器，以定义打印机操作。 灵敏度矩阵由从彩色打印机色域的选定子色域内的实验色块的正交配置计算的系数组成。 运行实验补丁的多个副本以获得统计学显着性。