公开(公告)号：US20070242920A1

公开(公告)日：2007-10-18

申请号：US11405774

申请日：2006-04-18

Applicant: Pinyen Lin ,  Peter Gulvin ,  Yao Wang ,  Lalit Mestha

Inventor： Pinyen Lin ,  Peter Gulvin ,  Yao Wang ,  Lalit Mestha

IPC: G02B6/26

CPC classification number: G01J3/26 ,  G02B6/29358 ,  G02B6/29395 ,  G02B26/001

Abstract: A tunable Fabry-Perot filter (8, 118, 218, 318, 418) includes substrates (10, 12) with parallel generally planar facing principal surfaces (14, 16) including spaced apart facing reflective surface regions (20, 22) that are at least partially reflective over a wavelength range and define an optical gap (Gopt) therebetween. At least one substrate of the pair of substrates is light transmissive over the selected wavelength range to enable optical coupling with the optical gap. Electrodes (24, 26) are disposed on the facing principal surfaces of the substrates. The electrodes on the facing principal surfaces of the substrates are define an electrode gap therebetween such that electrical biasing of the electrodes simultaneously modifies the optical and electrode gaps.

Abstract translation: 可调谐的法布里 - 珀罗滤光器（8,118,218,318,418）包括具有平行大致平面的主要表面（14,16）的衬底（10,12），该主表面包括间隔开的面对的反射表面区域（20,22） 在波长范围内至少部分地反射并在其间限定光学间隙（G opt）。 一对基板中的至少一个基板在所选择的波长范围内是透光的，以使得能够与光学间隙进行光耦合。 电极（24,26）设置在基板的相对的主表面上。 衬底的相对主表面上的电极在其间限定电极间隙，使得电极的电偏置同时改变光学和电极间隙。

公开(公告)号：US20060285135A1

公开(公告)日：2006-12-21

申请号：US11170946

申请日：2005-06-30

Applicant: Lalit Mestha ,  Yao Wang ,  Zhigang Fan

Inventor： Lalit Mestha ,  Yao Wang ,  Zhigang Fan

IPC: G03F3/08 ,  G06F15/00

CPC classification number: H04N1/6022 ,  H04N1/6041 ,  H04N1/62 ,  H04N1/628

Abstract: The present disclosure is directed to a system and method to render spatially uniform memory colors when images printed with CMYK primaries are not rendered uniformly due to output device quality errors. The disclosed method uses an array of sensors to scan a test image. Colors of interest are printed at the desired location first and then adjusted (iterated) to achieve a desired output quality. Iterations are carried out on the image on desired memory colors at the spatial resolution available in the measurement system. Colors of pixels are modified based on position where the pixels will be rendered, thereby compensating for any position/process related differences. Also disclosed is a process for incorporating modified memory colors before rendering, and the extension of memory color concepts to adjust colors for the uniform blocks (not edges), with uniformity defined by user definable thresholds.

Abstract translation: 本公开涉及一种用于在由CMYK原色打印的图像由于输出设备质量错误而不均匀地呈现空间均匀的存储器颜色的系统和方法。 所公开的方法使用传感器阵列来扫描测试图像。 感兴趣的颜色首先打印在所需位置，然后进行调整（迭代）以获得所需的输出质量。 在测量系统中可用的空间分辨率下，对所需存储器颜色的图像进行迭代。 基于像素将被渲染的位置修改像素的颜色，从而补偿任何位置/过程相关差异。 还公开了一种用于在渲染之前并入改进的存储器颜色的过程，以及扩展存储器颜色概念以调整用于统一块（而不是边缘）的颜色，具有由用户可定义阈值定义的均匀性。

公开(公告)号：US20060222257A1

公开(公告)日：2006-10-05

申请号：US11097751

申请日：2005-04-01

Applicant: Lalit Mestha ,  Sohail Dianat

Inventor： Lalit Mestha ,  Sohail Dianat

IPC: G06K9/40

CPC classification number: H04N1/4078

Abstract: Printing occurs when a marking engine deposits ink on a substrate to produce a pattern. The printed pattern can differ from the desired pattern when the marking engine is out of adjustment, the substrate and ink do not interact optimally, or for other reasons. A tone reproduction curve can be used to adjust the pattern or the marking engine so the printed pattern and desired pattern are similar. Another effect of printing is that contours can appear. Contouring can be reduced if a smooth tone reproduction curve is used. Aspects of the embodiments address limitations and flaws in the prior art by using a smoothing parameter and a smoothing matrix to produce TRCs that minimize contours.

Abstract translation: 当标记引擎将油墨沉积在基材上以产生图案时，印刷发生。 当标记引擎失调时，印刷图案可能与期望的图案不同，基底和墨水不能最佳地相互作用，或者由于其它原因。 可以使用色调再现曲线来调整图案或标记引擎，使得印刷图案和期望图案相似。 打印的另一个效果是可以出现轮廓。 如果使用平滑色调再现曲线，则可缩小轮廓。 实施例的方面通过使用平滑参数和平滑矩阵来产生最小化轮廓的TRC来解决现有技术中的限制和缺陷。

公开(公告)号：US20060221340A1

公开(公告)日：2006-10-05

申请号：US11097727

申请日：2005-04-01

Applicant: R. Viturro ,  Lalit Mestha

Inventor： R. Viturro ,  Lalit Mestha

IPC: G01J3/46

CPC classification number: H04N1/6033

Abstract: Tone reduction curves are utilized to map an input value to an output value. A tone reduction curve is normally produced by an algorithm that fits a curve to a series of knots. Knots can be determined from calibration data. Printing a calibration patch pattern yields a target patch pattern. The desired reflectances of the calibration patches and the measured reflectances of target patches can be used as calibration data. The series of knots can also include a highlight knot and a shadow knots so that the tone reduction curve functions better in the highlight and shadow regions.

Abstract translation: 音调降低曲线用于将输入值映射到输出值。 通常通过将曲线拟合成一系列节点的算法来产生色调降低曲线。 可以从校准数据确定结。 打印校准贴片图案产生目标贴片图案。 校准贴片的所需反射率和目标贴片的测量反射率可用作校准数据。 一系列节也可以包括高亮结和阴影结，使得降噪曲线在高光和阴影区域中功能更好。

公开(公告)号：US20060218172A1

公开(公告)日：2006-09-28

申请号：US11086087

申请日：2005-03-22

Applicant: Lalit Mestha

Inventor： Lalit Mestha

IPC: G06F17/00

CPC classification number: G01J3/50 ,  G01J3/02 ,  G01J3/0275 ,  G01J3/501 ,  G01J3/524

Abstract: To generate a reference database for a particular sensor in a multiple LED spectrophotometric system with a reduced number of test measurements taken from training samples, a first set of reflectance reference measurements are generated from a test target on to a reference sensor from a plurality of different LED emissions. A first spectral reconstruction reference matrix is computed comprising an operational characterization of the reference sensor from the first set of reflectance reference measurements. A second set of reflectance reference measurements from the test target is generated from a second subject sensor whose operation is to be personalized by the objective reference database. The second set of reflectance reference measurements are less in number than the first set. A second reconstruction matrix is computed comprising an operational characterization of the subject sensor from the second set of measurements. The second reconstruction matrix is adjusted by relating the second set of reflectance measurements to a set of corresponding reflectance measurements of the reference sensor, whereby the adjusting of the second matrix comprises computing an optimal solution spectral reconstruction matrix for the second sensor. The reference database is generated from the optimal solution spectral reconstruction matrix.

Abstract translation: 为了在具有从训练样本获得的测试测量数量减少的多个LED分光光度系统中产生用于特定传感器的参考数据库，从测试目标产生第一组反射参考测量值到多个不同的参考传感器 LED排放。 计算第一光谱重建参考矩阵，其包括来自第一组反射参考测量的参考传感器的操作表征。 来自测试目标的第二组反射参考测量从第二目标传感器产生，其第二对象传感器的操作将由目标参考数据库进行个性化。 第二组反射参考测量数量少于第一组。 计算第二重建矩阵，其包括来自第二组测量的对象传感器的操作表征。 通过将第二组反射率测量值与参考传感器的一组对应的反射率测量值相关联来调整第二重构矩阵，由此第二矩阵的调整包括计算第二传感器的最优解谱重构矩阵。 参考数据库是从最优解谱重建矩阵生成的。

公开(公告)号：US20050071104A1

公开(公告)日：2005-03-31

申请号：US10673688

申请日：2003-09-29

Applicant: R. Viturro ,  Lalit Mestha

Inventor： R. Viturro ,  Lalit Mestha

IPC: G01M99/00 ,  G01J3/46 ,  G03G15/00 ,  H04N1/00 ,  H04N1/60 ,  G01M19/00

CPC classification number: H04N1/6055 ,  G01J3/46 ,  G03G15/5062 ,  G03G2215/00042 ,  H04N1/00002 ,  H04N1/00015 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/0009

Abstract: What is disclosed is a method for maintaining consistent color output across printers even when the inline sensors have differences in accuracy due to various technical and environmental factors. A spectrophotometer is used to measure the color quality of printed references. Adjustments are then iteratively made until reference charts of desired color quality are obtained. The printed reference allows one to achieve relatively high system performance by removing sensor inaccuracies. Using the printed reference measured by the inline sensor control systems of each machine are calibrated. At customer sites and at suitable intervals, a reference document can be read using the inline sensor on a reference machine and any differences from expected values can be calibrated out. The present method is also applicable to other color management functions such as memory color and automatic profile generations using inline/offline sensors and can be used for determining reference values while calibrating control systems of printers over a wide range of applications.

Abstract translation: 所公开的是一种用于在打印机之间保持一致的颜色输出的方法，即使由于各种技术和环境因素，在线传感器的精度差异也是如此。 分光光度计用于测量印刷品的颜色质量。 然后重复进行调整，直到获得所需颜色质量的参考图。 打印的参考文献可以通过消除传感器的不准确性来实现相对较高的系统性能。 使用通过每台机器的在线传感器控制系统测量的打印参考进行校准。 在客户现场并以适当的间隔，可以使用参考机器上的内联传感器读取参考文档，并且可以校准与预期值的任何差异。 本方法还适用于使用内联/离线传感器的其它色彩管理功能，如存储器颜色和自动配置文件，并且可用于在广泛应用中校准打印机的控制系统时确定参考值。

公开(公告)号：US20070046941A1

公开(公告)日：2007-03-01

申请号：US11210957

申请日：2005-08-24

Applicant: Lalit Mestha ,  Tonya Love ,  Peter Paul ,  Claude Fillion

Inventor： Lalit Mestha ,  Tonya Love ,  Peter Paul ,  Claude Fillion

IPC: G01J3/46

CPC classification number: G01J3/50 ,  G01J3/02 ,  G01J3/0256 ,  G01J3/0278 ,  G01J3/501 ,  G01J3/524

Abstract: Spectrophotometer color measurement with a target illumination system and a reflected illumination sensing system where the target surface is variably spaced from said spectrophotometer. Color correction calibration information corresponding to color measurements for known different spacings of a test target surface from the spectrophotometer are obtained and stored. In use, the spacing of the actual target surface from the spectrophotometer is measured to provide a target spacing information signal. That signal is automatically combined with the stored color correction calibration information for the corresponding distances to provide at least partial correction of color measurement errors of the spectrophotometer for variable spacing of the target surface relative to the spectrophotometer even with low cost fixed focus optics. The spectrophotometer output can be so corrected by changing the target illumination, such as by LED pulse width changes, and/or by corrective adjustment of the measured reflectances.

公开(公告)号：US20060221346A1

公开(公告)日：2006-10-05

申请号：US11092635

申请日：2005-03-30

Applicant: Lalit Mestha ,  Joel Kubby ,  Yao Rong Wang

Inventor： Lalit Mestha ,  Joel Kubby ,  Yao Rong Wang

IPC: G01B9/02

CPC classification number: G01J3/2823 ,  G01J3/26 ,  G01N21/255 ,  G01N21/31 ,  G02B26/001

Abstract: A low cost spectral camera may include a multiple Fabry-Perot cavity filter with silicon photodetectors distributed one beside another in a two-dimensional matrix fashion. Each cavity may be designed to capture a pixel from an image. The two-dimensional fabry-perot array may function as a sensor to capture an image in spectral form. Spectral information may be obtained to generate spectral displays.

Abstract translation: 低成本光谱相机可以包括具有硅光电探测器的多个法布里 - 珀罗腔滤波器，其以二维矩阵方式彼此分布。 每个空腔可被设计成从图像中捕获像素。 二维fabry-perot阵列可以用作传感器以以光谱形式捕获图像。 可以获得光谱信息以产生光谱显示。

公开(公告)号：US20050030560A1

公开(公告)日：2005-02-10

申请号：US10635381

申请日：2003-08-05

Applicant: Martin Maltz ,  Raja Bala ,  Lalit Mestha

Inventor： Martin Maltz ,  Raja Bala ,  Lalit Mestha

IPC: H04N1/60

CPC classification number: H04N1/6058

Abstract: Methods and systems in an image processing device for controlling colors that are located external to a gamut are disclosed. A plurality of color values can be automatically provided as input to said image processing device, wherein said image processing device is under a control of a particular dimensional order, typically a three-dimensional order, but alternatively can be a two-dimensional order. Next, an operation can be performed dynamically determining which color value among the plurality of color values has attained a gamut limit. Thereafter, the particular dimensional order can be automatically reduced, thereby providing improved control for colors that are located external to said gamut. The plurality of color values analyzed is generally associated with three colors—cyan, magenta, and yellow.

Abstract translation: 公开了用于控制位于色域外部的颜色的图像处理装置中的方法和系统。 可以将多个颜色值自动提供给所述图像处理装置的输入，其中所述图像处理装置处于特定尺寸顺序的控制下，通常为三维顺序，但是可替代地可以是二维顺序。 接下来，可以动态地确定多个颜色值中的哪个颜色值已经达到色域限制的操作。 此后，可以自动减小特定尺寸顺序，从而对位于所述色域外部的颜色提供改进的控制。 分析的多个颜色值通常与三种颜色（青色，品红色和黄色）相关联。

公开(公告)号：US20080043271A1

公开(公告)日：2008-02-21

申请号：US11906854

申请日：2007-10-04

Applicant: Alvaro Gil ,  Lalit Mestha ,  Matthew Hoffmann

Inventor： Alvaro Gil ,  Lalit Mestha ,  Matthew Hoffmann

IPC: G06F15/00

CPC classification number: H04N1/6033

Abstract: This disclosure relates generally to methods and systems for color management in image/text printing or display systems, and more particularly to a system and method for automatically achieving spot color production through use of a plurality of gain matrices per spot color in determining spot color coordinates. Furthermore, this disclosure provides a means for mapping out-of-gamut target spot colors substantially near a boundary of the gamut of an image output device, such as a printer or display.

Abstract translation: 本公开一般涉及图像/文本打印或显示系统中的颜色管理的方法和系统，更具体地涉及一种通过在确定专色坐标中通过使用多个增益矩阵来自动实现专色生成的系统和方法 。 此外，本公开提供了一种用于映射基本上在诸如打印机或显示器的图像输出设备的色域边界附近的色域外的目标专色的方法。