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    HIERARCHICAL MULTIDIMENSIONAL LOOKUP TABLE GENERATION
    1.
    发明申请
    HIERARCHICAL MULTIDIMENSIONAL LOOKUP TABLE GENERATION 有权
    分层多元查找表生成

    公开(公告)号：US20110305389A1

    公开(公告)日：2011-12-15

    申请号：US12815823

    申请日：2010-06-15

    申请人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    发明人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00 ,  G06T11/001

    摘要： What is disclosed is a novel system and method for generating a hierarchical LUT for implementing a color transformation within a color imaging system. In one embodiment, a coarse LUT is received which comprises a plurality of sub-cubes arrayed on a plurality of coarse levels on a structured coarse grid. Each of the sub-cubes encompasses at least one coarse LUT node. Sub-cubes in the coarse grid are identified that are bisected by a boundary surface of the gamut. Then, each of the identified coarse LUT sub-cubes are associated with fine LUT which comprises a plurality of fine LUT nodes arrayed on a plurality of fine levels on a structured fine grid. A hierarchical LUT is generated from the coarse LUT and the associated fine LUTs. Thereafter, the hierarchical LUT can be used for color transformation within a color imaging system.

    摘要翻译： 公开的是用于生成用于实现彩色成像系统内的颜色变换的分层LUT的新型系统和方法。 在一个实施例中，接收粗略LUT，其包括排列在结构化粗网格上的多个粗略级上的多个子立方体。 每个子立方体包含至少一个粗略LUT节点。 识别粗网格中的子立方体，其被色域的边界面平分。 然后，识别的粗略LUT子立方体中的每一个都与精细LUT相关联，该精细LUT包括排列在结构化细网格上的多个精细级上的多个精细LUT节点。 从粗略LUT和相关联的精细LUT生成分层LUT。 此后，分层LUT可以用于彩色成像系统内的颜色变换。

    Method and apparatus for optimum black component determination for gray component replacement
    3.
    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 。

    Hierarchical multidimensional lookup table generation
    5.
    发明授权
    Hierarchical multidimensional lookup table generation 有权
    分层多维查找表生成

    公开(公告)号：US08526727B2

    公开(公告)日：2013-09-03

    申请号：US12815823

    申请日：2010-06-15

    申请人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    发明人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    IPC分类号： G06K9/00 ,  G06K9/36 ,  G06K1/00 ,  G06F15/00 ,  H04N1/60 ,  G03F3/08 ,  G09G5/02

    CPC分类号： G06K9/00 ,  G06T11/001

    摘要： A system and method for generating a hierarchical LUT for implementing a color transformation within a color imaging system. In one embodiment, a coarse LUT is received which comprises a plurality of sub-cubes arrayed on a plurality of coarse levels on a structured coarse grid. Each of the sub-cubes encompasses at least one coarse LUT node. Sub-cubes in the coarse grid are identified that are bisected by a boundary surface of the gamut. Then, each of the identified coarse LUT sub-cubes are associated with fine LUT which comprises a plurality of fine LUT nodes arrayed on a plurality of fine levels on a structured fine grid. A hierarchical LUT is generated from the coarse LUT and the associated fine LUTs. Thereafter, the hierarchical LUT can be used for color transformation within a color imaging system.

    摘要翻译： 一种用于生成用于在彩色成像系统内实现颜色变换的分层LUT的系统和方法。 在一个实施例中，接收粗略LUT，其包括排列在结构化粗网格上的多个粗略级上的多个子立方体。 每个子立方体包含至少一个粗略LUT节点。 识别粗网格中的子立方体，其被色域的边界面平分。 然后，识别的粗略LUT子立方体中的每一个都与精细LUT相关联，该精细LUT包括排列在结构化细网格上的多个精细级上的多个精细LUT节点。 从粗略LUT和相关联的精细LUT生成分层LUT。 此后，分层LUT可以用于彩色成像系统内的颜色变换。

    Updating a fleet CMYK to engine cmyk LUT in a color management strategy
    7.
    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。

    Control system for suppressing black in images
    8.
    发明授权
    Control system for suppressing black in images 有权
    抑制图像黑色的控制系统

    公开(公告)号：US08228556B2

    公开(公告)日：2012-07-24

    申请号：US12390748

    申请日：2009-02-23

    申请人： Lalit Keshav Mestha ,  Martin S. Maltz

    发明人： Lalit Keshav Mestha ,  Martin S. Maltz

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

    CPC分类号： H04N1/6022 ,  H04N1/603

    摘要： A computerized system, method, and software apparatus is presented which reduces the black level of the printing process in order to substantially remove stray black dots from the finished product of a printing output. Black levels are reduced by updating the print engine regions for the colors W, C, M, Y, MY, CM, CY, and neutral and by assigning a weights each color. The values are used to compute CMKY values. These values are then placed in a gain matrix and stored in a computer memory.

    摘要翻译： 提出了一种计算机化系统，方法和软件设备，其减少了印刷过程的黑色水平，以便从打印输出的成品中基本上去除杂散黑点。 通过更新颜色W，C，M，Y，MY，CM，CY和中性的打印引擎区域，并通过为每种颜色分配权重来减少黑色等级。 这些值用于计算CMKY值。 然后将这些值放置在增益矩阵中并存储在计算机存储器中。

    PRINTER PROFILING METHODS, APPARATUS AND SYSTEMS FOR DETERMINING DEVICE AND GAIN MATRIX VALUES
    10.
    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。