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    Method and apparatus for optimum black component determination for gray component replacement
    1.
    发明授权
    Method and apparatus for optimum black component determination for gray component replacement 有权
    用于灰分成分更换的最佳黑色成分确定的方法和装置

    公开(公告)号：US07768682B2

    公开(公告)日：2010-08-03

    申请号：US12017746

    申请日：2008-01-22

    申请人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Enrique Gil ,  Martin S. Maltz ,  Raja Bala

    发明人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Enrique Gil ,  Martin S. Maltz ,  Raja Bala

    IPC分类号： G03F3/08

    CPC分类号： H04N1/6025 ,  G06K15/02 ,  G06K15/1822 ,  G06K15/1825 ,  G06K2215/0094

    摘要： A multi-dimensional printer profile look-up table for color correction is generated. First, an initial estimate for a black (K) component in a four-color color space for received color signals in the device independent color space is generated by using a three-dimensional parametric function. Next, initial estimates for the three non-black color components of the four-color color space are generated from the generated initial estimate for the black (K) component and the received color signals. Then, a printer profile including a map that maps the device independent color space to the four-color color space is generated using the generated initial estimates for the black (K) and the three non-black color components in the four-color color space.

    摘要翻译： 产生用于颜色校正的多维打印机轮廓查找表。 首先，通过使用三维参数函数来生成用于装置独立色彩空间中的接收彩色信号的四色彩色空间中的黑色（K）分量的初始估计。 接下来，从生成的黑（K）分量和接收到的颜色信号的初始估计中产生四色颜色空间的三个非黑色分量的初始估计。 然后，使用生成的四色颜色空间中的黑色（K）和三种非黑色分量的初始估计来生成包括将设备独立颜色空间映射到四色颜色空间的地图的打印机配置文件 。

    PRINTER PROFILING METHODS, APPARATUS AND SYSTEMS FOR DETERMINING DEVICE AND GAIN MATRIX VALUES
    6.
    发明申请
    PRINTER PROFILING METHODS, APPARATUS AND SYSTEMS FOR DETERMINING DEVICE AND GAIN MATRIX VALUES 有权
    打印机配置方法，用于确定设备和增益矩阵值的设备和系统

    公开(公告)号：US20090296109A1

    公开(公告)日：2009-12-03

    申请号：US12127728

    申请日：2008-05-27

    申请人： Martin S. Maltz ,  Alvaro Enrique Gil ,  Lalit Keshav Mestha

    发明人： Martin S. Maltz ,  Alvaro Enrique Gil ,  Lalit Keshav Mestha

    IPC分类号： H04N1/60

    CPC分类号： H04N1/60 ,  H04N1/603

    摘要： This disclosure provides printer profiling methods, apparatus and systems for determining device and gain matrix values. Specifically, a method is disclosed for generating a multidimensional printer profile look-up table (LUT) for color correction. The method includes generating an initial LUT associating a plurality of colorimetric nodes with respective initial estimates of their respective device dependent color space representations and their respective gain matrix.

    摘要翻译： 本公开提供了用于确定装置和增益矩阵值的打印机分析方法，装置和系统。 具体地，公开了一种用于生成用于颜色校正的多维打印机轮廓查找表（LUT）的方法。 该方法包括生成将多个色度节点与其各自的设备相关色空间表示及其各自的增益矩阵的相应初始估计相关联的初始LUT。

    Printer profiling methods, apparatus and systems for determining device and gain matrix values
    7.
    发明授权
    Printer profiling methods, apparatus and systems for determining device and gain matrix values 有权
    用于确定设备和增益矩阵值的打印机配置方法，设备和系统

    公开(公告)号：US08203752B2

    公开(公告)日：2012-06-19

    申请号：US12127728

    申请日：2008-05-27

    申请人： Martin S. Maltz ,  Alvaro Enrique Gil ,  Lalit Keshav Mestha

    发明人： Martin S. Maltz ,  Alvaro Enrique Gil ,  Lalit Keshav Mestha

    IPC分类号： H04N1/60

    CPC分类号： H04N1/60 ,  H04N1/603

    摘要： This disclosure provides printer profiling methods, apparatus and systems for determining device and gain matrix values. Specifically, a method is disclosed for generating a multidimensional printer profile look-up table (LUT) for color correction. The method includes generating an initial LUT associating a plurality of colorimetric nodes with respective initial estimates of their respective device dependent color space representations and their respective gain matrix.

    摘要翻译： 本公开提供了用于确定装置和增益矩阵值的打印机分析方法，装置和系统。 具体地，公开了一种用于生成用于颜色校正的多维打印机轮廓查找表（LUT）的方法。 该方法包括生成将多个色度节点与其各自的设备相关色空间表示及其各自的增益矩阵的相应初始估计相关联的初始LUT。

    Updating a fleet CMYK to engine cmyk LUT in a color management strategy
    8.
    发明授权
    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CMYK到引擎cmyk LUT

    公开(公告)号：US08610959B2

    公开(公告)日：2013-12-17

    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： H04N1/40

    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。

    Compensating for print engine change in a document reproduction device
    10.
    发明授权
    Compensating for print engine change in a document reproduction device 有权
    补偿文件再现装置中的打印引擎变化

    公开(公告)号：US08547613B2

    公开(公告)日：2013-10-01

    申请号：US12915217

    申请日：2010-10-29

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

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

    IPC分类号： H04N1/60 ,  G03F3/08 ,  G06K9/00

    CPC分类号： H04N1/6022

    摘要： What is disclosed is a novel system and method of inheriting intended GCR into a 4-to-4 cascaded LUT to compensate for print engine change which adversely impacts the quality of an output print. The present method uses the device link transform to generate starting LUT nodes for the inverse of the drifted printer model by inputting CMYK or RGB into the device link at a color space resolution sufficient to determine output nodes. Lab and CMYK values are derived from this process, and a “starting LUT” is created at the Lab destination nodes. An iterative control begins with this starting LUT to produce an inverse drifted printer model that contains a close approximation for the intended GCR. The present method captures the intent of the device link transform for a fleet and generates the cascaded LUT for drift, specific printer, side1/side2, and other modes leading to special GCRs.

    摘要翻译： 所公开的是将期望的GCR继承到4对4级联LUT中以补偿不利地影响输出打印质量的打印引擎改变的新型系统和方法。 本方法使用设备链接变换通过以足以确定输出节点的颜色空间分辨率将CMYK或RGB输入到设备链接中来生成漂移的打印机模型的倒数的起始LUT节点。 实验室和CMYK值是从该过程得到的，并且在实验室目标节点处创建一个“起始LUT”。 迭代控制开始于该起始LUT以产生包含对于预期GCR的近似近似的反漂移打印机模型。 本方法捕获了针对车队的设备链接变换的意图，并生成用于漂移，特定打印机，side1 / side2和导致特殊GCR的其他模式的级联LUT。