公开(公告)号：US20090296108A1

公开(公告)日：2009-12-03

申请号：US12127719

申请日：2008-05-27

Applicant: Alvaro Enrique Gil ,  Lalit Keshav Mestha

Inventor： Alvaro Enrique Gil ,  Lalit Keshav Mestha

IPC: H04N1/60

CPC classification number: H04N1/603

Abstract: This disclosure provides printing methods, apparatus, and systems to generate a multidimensional printer profile for a color printer. Specifically, the profile is generated by a method of selecting a recruiter set of nodes associated with a plurality of target color nodes and selecting a candidate set of nodes associated with a plurality of target color nodes. The candidate nodes and recruiting node cooperate to generate a printer profile.

Abstract translation: 本公开提供了为彩色打印机生成多维打印机配置文件的打印方法，设备和系统。 具体地，通过选择与多个目标颜色节点相关联的节点的招募者集合并选择与多个目标颜色节点相关联的候选节点集合的方法来生成简档。 候选节点和招聘节点合作生成打印机配置文件。

公开(公告)号：US07589837B2

公开(公告)日：2009-09-15

申请号：US11606985

申请日：2006-12-01

Applicant: Yao Rong Wang ,  Lalit Keshav Mestha ,  Peter Michael Gulvin ,  Pinyen Lin

Inventor： Yao Rong Wang ,  Lalit Keshav Mestha ,  Peter Michael Gulvin ,  Pinyen Lin

IPC: G01J3/46

CPC classification number: G01N21/274 ,  G01J3/52 ,  G01J3/524 ,  G01N21/278

Abstract: A new calibration method for a spectrophotometer or a color sensor is provided using multiple color tiles with known reflectances. This procedure uses multiple reference standard tiles, in addition to, the standard white tile and substitutes a wavelength dependent adjustment constant instead of the dark noise reading. The constant is computed using measurements of multiple reference tiles with known reflectance spectra, and its purpose is to weight the sensor readings in order to avoid ill-posed scaling caused by physical limitations such as less than ideal light sources. A scaling factor may be calculated and also used to compute the reflectance of an arbitrary object. A device for carrying out the method is also provided.

Abstract translation: 使用具有已知反射率的多个彩色瓷砖提供了用于分光光度计或颜色传感器的新的校准方法。 该过程除了标准白色瓦片之外还使用多个参考标准瓦片，并替代波长相关的调整常数而不是暗噪声读数。 使用具有已知反射光谱的多个参考瓦片的测量来计算常数，并且其目的是为了避免由诸如不理想的光源的物理限制引起的不适当的缩放来加权传感器读数。 可以计算缩放因子并且还用于计算任意对象的反射率。 还提供了一种用于执行该方法的装置。

公开(公告)号：US20090040563A1

公开(公告)日：2009-02-12

申请号：US11890574

申请日：2007-08-07

Applicant: Lalit Keshav Mestha ,  Peter Stanley Fisher ,  Alvaro Enrique Gil ,  Tonya L. Love

Inventor： Lalit Keshav Mestha ,  Peter Stanley Fisher ,  Alvaro Enrique Gil ,  Tonya L. Love

IPC: G06K15/00

CPC classification number: G06K19/06009 ,  B65H2511/415 ,  G03G15/50 ,  G06K2019/06225 ,  H04N1/32101 ,  H04N2201/3222 ,  H04N2201/327 ,  H04N2201/3271

Abstract: Disclosed is an invisible encoding system which can be used for tracking printing jobs. Specifically, this disclosure provides a system and method of encoding sheets of a printing job, where the encoding is invisible to the human naked eye and the encoded information may be permanently fixed to the finished printed product.

Abstract translation: 公开了一种可用于跟踪打印作业的不可见编码系统。 具体地，本公开提供了一种编码打印作业的片材的系统和方法，其中编码对于人眼是不可见的，并且编码的信息可以永久地固定到完成的打印产品。

公开(公告)号：US20090009766A1

公开(公告)日：2009-01-08

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 ,  B41J29/393

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， 由第二温度下的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：US07333208B2

公开(公告)日：2008-02-19

申请号：US11016952

申请日：2004-12-20

Applicant: Lalit Keshav Mestha ,  Yao Rong Wang ,  Joel A. Kubby

Inventor： Lalit Keshav Mestha ,  Yao Rong Wang ,  Joel A. Kubby

IPC: G01J3/45 ,  G01B11/02 ,  G01B9/02

CPC classification number: G01N21/255 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0256 ,  G01J3/26

Abstract: Apparatus and methods are provided for implementing a full width array material scanning spectrophotometer by integrating a Fabry-Perot cavity filter with a silicon photodetector and a light focusing device (an optical guide or a SELFOC® lens). The material to be scanned is illuminated by a broad band illumination source (white LEDs or a fluorescence light source). The Fabry-Perot cavity gap can be tuned electromechanically to get multiple measurements to resolve the spectral distribution of the transmitted light signal. The array spectrophotometric architecture facilitates an elongated, substantially linear band detection and the associated spectral reconstruction technique resolves spectral distribution in the presence of multiple resonant peaks.

Abstract translation: 提供了通过将法布里 - 珀罗腔滤波器与硅光电检测器和光聚焦装置（光导或透镜）集成来实现全宽阵列材料扫描分光光度计的装置和方法。 待扫描的材料由宽带照明源（白色LED或荧光光源）照明。 法布里 - 珀罗腔间隙可以机电调整以获得多次测量，以解决透射光信号的光谱分布。 阵列分光光度结构有助于细长的，基本上线性的带检测，并且相关的光谱重建技术在存在多个共振峰的情况下解决了光谱分布。

公开(公告)号：US08958081B2

公开(公告)日：2015-02-17

申请号：US12261624

申请日：2008-10-30

Applicant: Alvaro Enrique Gil ,  Lalit Keshav Mestha

Inventor： Alvaro Enrique Gil ,  Lalit Keshav Mestha

IPC: H04N1/54 ,  H04N1/60 ,  H04N1/405 ,  H04N1/409 ,  G06K15/02 ,  G06F3/12 ,  G03F3/00

CPC classification number: H04N1/6022

Abstract: This disclosure provides spot color control methods, apparatus and systems. According to one exemplary embodiment, disclosed is a method of generating device dependent color recipes for a plurality of printing devices. The method includes generating a first device dependent recipe for a target color for rendering on a first printing device, and generating a second device dependent recipe for the target color for rendering on a second printing device, whereby the second device dependent recipe is a function of the first device dependent color recipe.

Abstract translation: 本公开提供了专色控制方法，装置和系统。 根据一个示例性实施例，公开了一种用于为多个打印设备生成依赖于设备的颜色配方的方法。 该方法包括生成用于在第一打印设备上呈现的目标颜色的第一设备相关配方，以及生成用于目标颜色的第二设备相关配方以在第二打印设备上呈现，由此第二设备依赖配方是 第一个依赖于设备的颜色配方。

公开(公告)号：US08724168B2

公开(公告)日：2014-05-13

申请号：US12969854

申请日：2010-12-16

Applicant: Wencheng Wu ,  Lalit Keshav Mestha ,  Edual N. Dalal

Inventor： Wencheng Wu ,  Lalit Keshav Mestha ,  Edual N. Dalal

IPC: G06F15/00

CPC classification number: H04N1/6033

Abstract: What is disclosed is a novel system and method for updating a cluster model for color control. In one example embodiment, a cluster model is received and analyzed to identify clusters therein. Each of the identified clusters has an associated transform. Thereafter, in response to a threshold event having occurred, a critical cluster is identified and a critical color is identified from the cluster. Steps for identifying a critical color are more fully described herein. A selected number of patches is then printed in each of the critical colors and color measurements are obtained from the printed patches using, for instance, a colorimeter or spectrophotometer. If the color measurements have deviated beyond a defined threshold, then update the cluster model by: updating the transform associated with the cluster; redefining the number of clusters; redefining a center of any of the clusters; or redefining a boundary of the clusters.

Abstract translation: 公开的是用于更新用于颜色控制的聚类模型的新型系统和方法。 在一个示例实施例中，接收并分析集群模型以识别其中的集群。 所识别的每个群集都具有相关联的变换。 此后，响应于发生的阈值事件，识别关键簇并且从集群识别关键颜色。 用于识别关键颜色的步骤在本文中更全面地描述。 然后以每种关键颜色印刷所选数量的贴片，并且使用例如色度计或分光光度计从印刷的贴片获得颜色测量值。 如果颜色测量值偏离了定义的阈值，则通过更新与集群关联的变换来更新集群模型; 重新定义集群数; 重新定义任何集群的中心; 或重新定义集群的边界。

公开(公告)号：US08564830B2

公开(公告)日：2013-10-22

申请号：US12819591

申请日：2010-06-21

Applicant: Lalit Keshav Mestha ,  Sohail A. Dianat

Inventor： Lalit Keshav Mestha ,  Sohail A. Dianat

IPC: G06F15/00

CPC classification number: H04N1/603 ,  H04N1/6016

Abstract: What is provided are a novel system and method for generating a sensitivity matrix for adaptive color control in a color marking device. In one embodiment, a first and second color space is identified. A total of N intermediate components are identified. Component sensitivity matrices are calculated and a sensitivity matrix is generated using a chain rule of differentiation over each successive component sensitivity matrix. The present method facilitates calibration of dynamically varying color reproduction devices.

Abstract translation: 提供了一种用于在颜色标记装置中产生用于自适应颜色控制的灵敏度矩阵的新型系统和方法。 在一个实施例中，识别第一和第二颜色空间。 共鉴定出N个中间成分。 计算组分灵敏度矩阵，并使用每个连续分量敏感矩阵的分化链规则生成灵敏度矩阵。 本方法有助于校正动态变化的色彩再现装置。

公开(公告)号：US08520074B2

公开(公告)日：2013-08-27

申请号：US12967775

申请日：2010-12-14

Applicant: Yao Rong Wang ,  Zhigang Fan ,  Lalit Keshav Mestha

Inventor： Yao Rong Wang ,  Zhigang Fan ,  Lalit Keshav Mestha

IPC: H04N5/33 ,  G06K9/46

CPC classification number: H04N5/33 ,  G06K9/00369 ,  G06K9/00785 ,  G06K9/00805 ,  G06K9/00838 ,  G06K9/2018

Abstract: What is disclosed is a novel system and method for determining the number of persons in an IR image obtained using an IR imaging system. The present method separates a human from the surrounding background via a set of particularly formed intensity ratios. Quantities derived from these ratios and threshold values are used to selectively classify whether a pixel in the IR image is from a human or from a non-human. Based upon the classification of the various pixels in the IR image, the number of persons is determined. Various embodiments are disclosed.

Abstract translation: 公开的是用于确定使用IR成像系统获得的IR图像中的人数的新颖系统和方法。 本方法通过一组特别形成的强度比将人与周围背景分离。 使用从这些比率和阈值导出的量来选择性地分类IR图像中的像素是来自人还是来自非人。 基于IR图像中的各种像素的分类，确定人数。 公开了各种实施例。

公开(公告)号：US08514470B2

公开(公告)日：2013-08-20

申请号：US12963279

申请日：2010-12-08

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: H04N1/46 ,  H04N1/60 ,  G06K9/00

CPC classification number: H04N1/6041 ,  H04N1/6044 ,  H04N1/6047

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.

Abstract translation: 公开的是基于使用在线分光光度计（ILS）或类似装置在印刷纸上进行的测量的静电Dmax控制的新颖系统和方法。 所公开的方法基于直接测量致动器灵敏度的颜色。 使用专用于该分色的致动器来独立地控制每个分离。 本方法在控制固体原色的颜色方面是有效的。 变化矢量与现场观察到的纯色变化高度相关的事实表明，这里的教导有效地提高了纯色稳定性。 增加的纯色稳定性增加了整个打印机色域的色彩稳定性和色域边界的稳定性，这增加了色域映射算法的鲁棒性。 有利地，本方法可以与现有的基于ILS的维护架构相结合。