公开(公告)号：US08117183B2

公开(公告)日：2012-02-14

申请号：US12273208

申请日：2008-11-18

Applicant: Lalit Keshav Mestha ,  Sohail A. Dianat

Inventor： Lalit Keshav Mestha ,  Sohail A. Dianat

IPC: G06F7/00 ,  G06F17/30

CPC classification number: G06F17/3025

Abstract: The computer algorithm described which indexes and retrieves images. A query in the form of an image object or an image facilitates image retrieval in order to retrieve several images close to user's request. A thumbnail form of rank ordered images is provided for viewing. The user selects the images and down loads the images for inclusion in the job. The images are then ripped and printed.

Abstract translation: 描述了用于索引和检索图像的计算机算法。 以图像对象或图像形式的查询便于图像检索，以便检索靠近用户请求的多个图像。 提供排序图像的缩略图形式供查看。 用户选择图像并下载图像以包含在作业中。 然后将图像撕开并打印。

公开(公告)号：US20120019842A1

公开(公告)日：2012-01-26

申请号：US12839620

申请日：2010-07-20

Applicant: Jack Gaynor Elliot ,  Lalit Keshav Mestha ,  Peter Paul ,  David C. Craig ,  Brian Robert Conrow ,  Christine Ann Steurrys

Inventor： Jack Gaynor Elliot ,  Lalit Keshav Mestha ,  Peter Paul ,  David C. Craig ,  Brian Robert Conrow ,  Christine Ann Steurrys

IPC: H04N1/60

CPC classification number: H04N1/6033 ,  H04N1/6036

Abstract: What is disclosed is a novel system and method for xerographic Dmax control based upon measurements made on the printed paper using an inline spectrophotometer (ILS) or similar device. The disclosed method is based upon directly measuring the color to actuator sensitivity. Each of the separations is controlled independently using an actuator specific to that color separation. The present method is effective at controlling the color of the solid primaries. The fact that the vector of change is highly correlated with solid color variation seen in the field suggests that the teachings hereof effectively increase the solid color stability. Increased solid color stability increases the color stability throughout the printer gamut and the stability of the gamut boundaries, which increases the robustness of gamut mapping algorithms. Advantageously, the present method can be combined with existing ILS-based maintenance architectures.

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：US20110149311A1

公开(公告)日：2011-06-23

申请号：US12645832

申请日：2009-12-23

Applicant: LALIT KESHAV MESTHA ,  Yonghui Zhao ,  Yao Rong Wang

Inventor： LALIT KESHAV MESTHA ,  Yonghui Zhao ,  Yao Rong Wang

IPC: G06F15/00

CPC classification number: H04N1/62 ,  H04N1/6033

Abstract: What is disclosed is a novel system and method for generating a color inconstancy guide for use in spot color print applications. In a manner more fully disclosed herein, color inconstancy values are calculated for selected spot colors of interest using a color inconstancy metric. A color inconstancy guide is generated from the calculated color inconstancy values and their respective spot colors. Thereafter, when a user desires to render a job in a particular spot color, the associated color inconstancy value for that color can be obtained from the 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 spot color selection that are less sensitive to varying illuminations for a given print/copy job. The present color inconstancy guide provides meaningful extensions in color quality and color reproduction in print/copy job environments.

Abstract translation: 所公开的是用于产生用于专色印刷应用的颜色不定性指南的新型系统和方法。 以这里更全面地公开的方式，使用颜色不定标度来计算所选择的感兴趣的专色的颜色不定值。 从计算的颜色不定值及其各自的专色产生颜色不定性指南。 此后，当用户期望以特定专色呈现作品时，可以从该指南中获得该颜色的相关联的颜色不定值。 在各种实施例中，可以提供对于给定的打印/复印作业对变化的照明不敏感的专色选择的以使用的建议打印机，介质类型，半色调屏幕和其他有意义的帮助的形式的建议。 目前的色彩不一致指南在打印/复印作业环境中提供颜色质量和色彩再现的有意义的扩展。

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。