公开(公告)号：US08103092B2

公开(公告)日：2012-01-24

申请号：US12391529

申请日：2009-02-24

Applicant: Lalit Keshav Mestha ,  Alvaro Enrique Gil

Inventor： Lalit Keshav Mestha ,  Alvaro Enrique Gil

IPC: G06K9/00

CPC classification number: H04N1/6058

Abstract: What is disclosed is a novel system and method for quickly and accurately determining whether a color is inside or outside the boundary of a surface of a color gamut. The present method enables a gamut mapping algorithm to quickly identify points which require further processing and those which are already inside the gamut and thus do not need to be processed by the gamut mapping function. The present method can be performed directly on the printing device to determine whether the colors are in/out of the actual gamut surface of the target marking device. Other embodiments have also been disclosed.

Abstract translation: 公开的是用于快速且准确地确定颜色是否在色域的表面的边界内部或外部的新颖的系统和方法。 本方法使得色域映射算法能够快速识别需要进一步处理的点和已经在色域内的点，因此不需要由色域映射函数来处理。 本方法可以直接在打印装置上执行，以确定颜色是否在目标标记装置的实际色域表面之中。 还公开了其它实施例。

公开(公告)号：US08095226B2

公开(公告)日：2012-01-10

申请号：US12363898

申请日：2009-02-02

Applicant: Lalit Keshav Mestha ,  Prudhvi K. Gurram ,  Alvaro Enrique Gil

Inventor： Lalit Keshav Mestha ,  Prudhvi K. Gurram ,  Alvaro Enrique Gil

IPC: G05B13/04

CPC classification number: G03G15/065 ,  G03G15/0266 ,  G03G15/50

Abstract: Methods and planning systems used to schedule gain matrices for process control loops and determine optimal values for manipulated variables according to a minimum cost function. A cost function is calculated for each of a predetermined number of plans as a sum of partial cost functions calculated over a predetermined number of projections in a horizon. Each partial cost function after the initial projection of a plan is calculated using a scheduled gain matrix. The gain matrix can be scheduled for each projection by selection from a predetermined set of gain matrices or can be calculated in real time during the calculation for each projection.

Abstract translation: 用于计划过程控制回路的增益矩阵的方法和规划系统，并根据最小成本函数确定操纵变量的最佳值。 对于预定数量的计划中的每一个计算成本函数，作为在水平线上预定数量的投影计算的部分成本函数的总和。 使用调度增益矩阵计算平面图初始投影后的每个部分成本函数。 增益矩阵可以通过从预定的增益矩阵组中选择来为每个投影进行调度，或者可以在每个投影的计算期间实时计算增益矩阵。

公开(公告)号：US20110282613A1

公开(公告)日：2011-11-17

申请号：US12777344

申请日：2010-05-11

Applicant: Gary Walker Skinner ,  Scott Seyfried ,  Lalit Keshav Mestha

Inventor： Gary Walker Skinner ,  Scott Seyfried ,  Lalit Keshav Mestha

IPC: G06F19/00 ,  G01J3/46

CPC classification number: G01J3/50 ,  G01J3/501 ,  G01J3/524

Abstract: What is disclosed is a novel system and method for quickly characterizing a reflectance sensing device without measuring the full set of characterization color patch training samples currently used in manufacturing and characterizing individual sensors. In accordance with the teachings hereof, measurements of training samples taken with a previously manufactured ‘fleet master’ sensing device are adapted, in a manner more fully disclosed herein, based upon knowledge of the wavelengths of the illuminators used for both the subject and fleet master sensors, as well as spectral reflectance response of the training samples as measured by a reference spectrophotometer device. Utilizing the adapted measurements of the fleet master device, a reconstruction matrix can be quickly constructed for the subject sensor. The present system and method provides reasonably good accuracy using pre-existing measurement data. This results in manufacturing cost savings on a per-sensor basis.

Abstract translation: 所公开的是用于快速表征反射率感测装置的新型系统和方法，而不测量当前用于制造和表征各个传感器的全套特征色块训练样本。 根据本文的教导，基于先前制造的“舰队主”感测装置拍摄的训练样本的测量以基于本文更全面地公开的方式基于用于主体和舰队主人的照明器的波长的知识来适配 传感器，以及通过参考分光光度计装置测量的训练样品的光谱反射响应。 利用船队主装置的适应测量，可以快速地为对象传感器构建重建矩阵。 本系统和方法使用预先存在的测量数据提供了相当好的精度。 这导致在每个传感器的基础上制造成本节省。

公开(公告)号：US08023156B2

公开(公告)日：2011-09-20

申请号：US11789091

申请日：2007-04-23

Applicant: Lalit Keshav Mestha ,  Yao Rong Wang ,  Zhigang Fan ,  Alvaro Enrique Gil ,  Matthew F. Hoffmann

Inventor： Lalit Keshav Mestha ,  Yao Rong Wang ,  Zhigang Fan ,  Alvaro Enrique Gil ,  Matthew F. Hoffmann

IPC: G06K15/00

CPC classification number: H04N1/6033 ,  H04N1/40006

Abstract: Disclosed is an image color management system and method for controlling an image output device. The method for controlling the image output device comprises generating an image output device profile LUT (look-up-table) characterizing the color profile of the image output device for a plurality of drift states associated with the image output device; generating a set of basis vectors representing the LUT; storing the set of basis vectors in an image output device controller; and generating an image output device active profile associated with a current drift state of the image output device to convert image color data for display or printing by the image output device, wherein the image output device active profile is generated from the set of basis vectors.

Abstract translation: 公开了一种用于控制图像输出装置的图像颜色管理系统和方法。 用于控制图像输出装置的方法包括：生成表征与图像输出装置相关联的多个漂移状态的图像输出装置的颜色特征图像​​的图像输出装置简档LUT（查找表）; 生成表示LUT的一组基矢量; 将所述一组基矢量存储在图像输出装置控制器中; 以及生成与所述图像输出设备的当前漂移状态相关联的图像输出设备活动轮廓，以转换由图像输出设备显示或打印的图像颜色数据，其中从所述一组基矢量生成所述图像输出设备活动简档。

公开(公告)号：US07961351B2

公开(公告)日：2011-06-14

申请号：US12061137

申请日：2008-04-02

Applicant: Yao Rong Wang ,  Lalit Keshav Mestha ,  Alvaro Enrique Gil

Inventor： Yao Rong Wang ,  Lalit Keshav Mestha ,  Alvaro Enrique Gil

IPC: G06F15/00 ,  G06K15/00 ,  H04N1/40 ,  G03F3/08

CPC classification number: H04N1/6033

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07961322B2

公开(公告)日：2011-06-14

申请号：US12203520

申请日：2008-09-03

Applicant: Gary W. Skinner ,  Lalit Keshav Mestha ,  Paul S. Bonino

Inventor： Gary W. Skinner ,  Lalit Keshav Mestha ,  Paul S. Bonino

IPC: G01J3/50

CPC classification number: G01J3/52 ,  G01J3/524 ,  G01N21/5907 ,  G01N2021/5942 ,  H04N1/6033

Abstract: Color measurements of color samples are estimated by a system and method wherein an area coverage of a color sample is computed, the color sample is printed, a color of the printed color sample, such as a set of reflectance values, is measured at a first temperature, and a color of the printed color sample is estimated at a second temperature lower than the first temperature, the estimation being based on the area coverage and a thermochromatic model which represents relationships between measured colors of printed color samples at the first and second temperatures.

Abstract translation: 通过系统和方法估计颜色样本的颜色测量，其中计算颜色样本的面积覆盖率，打印颜色样本，打印色样的颜色，例如一组反射率值，在第一 温度和印刷色样的颜色在低于第一温度的第二温度下被估计，估计是基于区域覆盖率和表示在第一和第二温度下印刷的彩色样品的测量颜色之间的关系的热色模型 。

公开(公告)号：US07864320B2

公开(公告)日：2011-01-04

申请号：US12203454

申请日：2008-09-03

Applicant: Paul S. Bonino ,  Lalit Keshav Mestha ,  Gary W. Skinner

Inventor： Paul S. Bonino ,  Lalit Keshav Mestha ,  Gary W. Skinner

IPC: G01J3/46

CPC classification number: G01J3/46 ,  G01J3/02 ,  G01J3/027 ,  G01J3/0286 ,  G01J3/463 ,  H04N1/6033

Abstract: A method for estimating color measurements of color samples includes printing a color sample based on input data, measuring a color of the printed color sample with an in-line spectral sensor at a first temperature, and estimating a color of the printed color sample which would be output by a reference spectral sensor at a second temperature. The estimation is based on a thermochromatic model which represents relationships between measured colors of printed color samples on the in-line spectral sensor at the first temperature and the reference spectral sensor at the second temperature. The reference spectral sensor is a different type of sensor from the in-line spectral sensor, so the color response of the two spectral sensors is different, even when the measurement conditions are identical. Consequently, a set of printed spot color samples generate different measured colors at the second temperature on the in-line spectral sensor from the reference spectral sensor. The exemplary method allows these differences, as well as measurement temperature differences to be accounted for in the estimation.

Abstract translation: 用于估计颜色样本的颜色测量的方法包括基于输入数据打印颜色样本，在第一温度下用在线光谱传感器测量所打印的颜色样本的颜色，以及估计打印的颜色样本的颜色， 在第二温度下由参考光谱传感器输出。 该估计基于热色模型，其表示在第一温度下的在线光谱传感器和在第二温度下的参考光谱传感器的印刷色样的测量颜色之间的关系。 参考光谱传感器是与在线光谱传感器不同类型的传感器，因此即使测量条件相同，两个光谱传感器的颜色响应也是不同的。 因此，一组印刷的专色样本在来自参考光谱传感器的在线光谱传感器的第二温度下产生不同的测量颜色。 该示例性方法允许在估计中考虑到这些差异以及测量温度差异。

公开(公告)号：US07773222B2

公开(公告)日：2010-08-10

申请号：US12194602

申请日：2008-08-20

Applicant: Lalit Keshav Mestha

Inventor： Lalit Keshav Mestha

IPC: G01J3/50

CPC classification number: H04N1/00002 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/027 ,  G01J3/0286 ,  G01J3/0294 ,  G01J3/10 ,  G01J3/46 ,  G01J3/462 ,  G01J3/50 ,  G01J3/501 ,  H04N1/00013 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00058 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/02815 ,  H04N1/02865 ,  H04N1/0311 ,  H04N1/0312 ,  H04N1/191

Abstract: A system and method for full width scanning color analysis of a printed media sheet are disclosed. The full width array spectrophotometer system includes one or more substantially linear elongated illumination arrays of closely spaced multiple illumination sources. The sources include sets of illumination sources, including a first set of different color illumination sources and a second set including one or more UV-emitting illumination sources. The sets are arranged to span a printer paper path or other object path to illuminate a band extending transversely across a printed print media sheet or other object moving in the path. A full width array light imaging sensor includes an elongated array of multiple closely spaced photodetectors for detecting plural colors and is positioned adjacent to and extending substantially parallel to the linear array(s) to receive radiation reflected from the transverse illuminated band.

Abstract translation: 公开了一种用于印刷介质片材的全宽度扫描颜色分析的系统和方法。 全宽阵列分光光度计系统包括一个或多个紧密间隔的多个照明源的基本上线性的细长照明阵列。 源包括一组照明源，包括第一组不同颜色的照明源和包括一个或多个UV发射照明源的第二组。 这些组被布置成跨越打印机纸路径或其他物体路径以照亮横向延伸穿过印刷的打印介质片材或在路径中移动的其它物体的带。 全宽阵列光成像传感器包括多个紧密间隔的光电检测器的细长阵列，用于检测多种颜色，并且被定位成与线性阵列相邻并基本平行于其延伸，以接收从横向照射带反射的辐射。

公开(公告)号：US07768682B2

公开(公告)日：2010-08-03

申请号：US12017746

申请日：2008-01-22

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

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

IPC: G03F3/08

CPC classification number: H04N1/6025 ,  G06K15/02 ,  G06K15/1822 ,  G06K15/1825 ,  G06K2215/0094

Abstract: 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.

Abstract translation: 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 。

公开(公告)号：US07706031B2

公开(公告)日：2010-04-27

申请号：US11242423

申请日：2005-09-30

Applicant: R. Enrique Viturro ,  Lalit Keshav Mestha ,  Joseph Hancock ,  Tonya Love

Inventor： R. Enrique Viturro ,  Lalit Keshav Mestha ,  Joseph Hancock ,  Tonya Love

IPC: H04N1/46 ,  G06K15/00 ,  G01D18/00

CPC classification number: H04N1/4078

Abstract: An automatic gray balance control system to produce TRCs for all primary colors in a reproduction device and for each pitch of a photoreceptor system by printing target patches for each pitch, measuring the output colors, and automatically readjusting the tone reproduction curves until a satisfactory level of accuracy is obtained as compared to the theoretical desired output. The system produces pitch-based gray balanced TRCs that are updated frequently for each pitch, with different TRCs for different pitches, to ensure consistency in output from pitch to pitch as well as from page to page on a given pitch.

Abstract translation: 一种自动灰度平衡控制系统，用于在再现装置中产生用于所有原色的TRC，并且通过印刷每个间距的目标贴片，测量输出颜色，并且自动重新调整色调再现曲线，直到满意的等级 与理论预期输出相比，获得了精度。 该系统产生基于沥青的灰色平衡TRC，每个音调经常更新，具有不同音高的不同TRC，以确保从音调到音调的输出以及给定音调从一页到另一页的输出的一致性。