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1. 发明申请

US20120327434A1 SPOT COLOR RENDERING VIA FEEDBACK-BASED MULTI-OBJECTIVE OPTIMIZATION 有权
标题翻译：通过基于反馈的多目标优化进行SPOT色彩渲染
公开(公告)号：US20120327434A1
公开(公告)日：2012-12-27
申请号：US13167349
申请日：2011-06-23
申请人： Alvaro Enrique GIL , Lalit Keshav MESTHA , Wencheng WU , Edul N. DALAL
发明人： Alvaro Enrique GIL , Lalit Keshav MESTHA , Wencheng WU , Edul N. DALAL
IPC分类号： H04N1/60
CPC分类号： H04N1/622
摘要： What is disclosed is a feedback control based system and method for selecting spot color recipes for improved spot color rendition while simultaneously minimizing a function of image quality attributes formed with states defined as vectors such as L*, a*, b*, mottle, graininess, etc. Color is measured with an in-line spectrophotometer or with a full/partial width array. If the sensor is not available, then a model of the print device is used to optimize the function of image quality attributes. In one example embodiment, a spot color of interest is selected along with a set of image quality attributes to be improved for the spot colors of interest. Set points for process actuators and color recipes of the color marking device are adjusted such that a function of the image quality attributes is minimized when the spot color is rendered on the device. Various workflows are disclosed.
摘要翻译：所公开的是基于反馈控制的系统和方法，用于选择改进的专色再现的专色配方，同时最小化由定义为诸如L *，a *，b *，斑点，颗粒度的矢量形成的图像质量属性的功能等等。使用直列分光光度计或全/部分宽度阵列测量颜色。如果传感器不可用，则使用打印设备的型号来优化图像质量属性的功能。在一个示例性实施例中，选择感兴趣的专色连同一组图像质量属性以便针对感兴趣的专色进行改进。调整颜色标记装置的处理执行器和颜色配置的设定点，使得当在设备上呈现专色时，图像质量属性的功能被最小化。公开了各种工作流程。

2. 发明申请

US20100198368A1 METHODS AND SYSTEMS TO SCHEDULE GAINS IN PROCESS CONTROL LOOPS 有权
标题翻译：方法和系统在过程控制中排序增益
公开(公告)号：US20100198368A1
公开(公告)日：2010-08-05
申请号：US12363898
申请日：2009-02-02
申请人： Lalit Keshav MESTHA , Prudhvi K. GURRAM , Alvaro Enrique GIL
发明人： Lalit Keshav MESTHA , Prudhvi K. GURRAM , Alvaro Enrique GIL
IPC分类号： G05B13/04
CPC分类号： G03G15/065 , G03G15/0266 , G03G15/50
摘要： 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.
摘要翻译：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。

3. 发明申请

US20130088729A1 USING A PARETO FRONTIER TO FIND AN OPTIMAL COLOR SOLUTION FOR SPOT CALIBRATION 有权
标题翻译：使用PARETO FRONTIER寻找最佳颜色解决方案进行点校准
公开(公告)号：US20130088729A1
公开(公告)日：2013-04-11
申请号：US13253660
申请日：2011-10-05
申请人： Lina FU , Alvaro Enrique GIL , Lalit Keshav MESTHA
发明人： Lina FU , Alvaro Enrique GIL , Lalit Keshav MESTHA
IPC分类号： H04N1/60
CPC分类号： H04N1/60 , H04N1/54
摘要： What is disclosed is a method for determining a color solution which achieves color objectives for a color marking device involves performing the following. In one embodiment, N objectives of interest are identified for a color marking device and a N-dimensional Pareto Front is constructed which comprises a collection of color solutions which accommodates those objectives. The Pareto Front is constructed using an optimization process based upon printer models of the objectives. Color solutions can be at least one color recipe, or a combination of color recipes and process actuators. A target point is selected in an N-dimensional objective space based upon at least one user-selected preference. The target point is then mapped to a point on the Pareto Front. The mapping identifies one of the color solutions which, in turn, is used to generate a spot color for the device. The generated spot color achieves the user-selected preference.
摘要翻译：所公开的是确定实现彩色标记装置的色彩目标的色彩解决方案的方法，包括执行以下操作。在一个实施例中，为彩色标记装置识别出感兴趣的N个目标，并且构造了包括适应这些目标的颜色解决方案集合的N维帕累托前端。帕累托前面采用基于目标打印机模型的优化过程构建。颜色解决方案可以是至少一种颜色配方，或颜色配方和过程执行器的组合。基于至少一个用户选择的偏好在N维目标空间中选择目标点。目标点然后映射到帕累托阵线上的一个点。该映射标识了颜色解决方案之一，而这些颜色解决方案又被用于生成设备的专色。生成的专色实现了用户选择的偏好。

4. 发明申请

US20130016284A1 HYPERSPECTRAL IMAGE RECONSTRUCTION VIA A COMPRESSED SENSING FRAMEWORK 有权
标题翻译：通过压缩感知框架进行超视距图像重建
公开(公告)号：US20130016284A1
公开(公告)日：2013-01-17
申请号：US13180895
申请日：2011-07-12
申请人： Lalit Keshav MESTHA , Alvaro Enrique GIL
发明人： Lalit Keshav MESTHA , Alvaro Enrique GIL
IPC分类号： H04N5/14
CPC分类号： G06T5/50 , G06T2207/10036
摘要： What is disclosed is a system and method for image reconstruction using a compressed sensing framework to increase the number of wavelength bands in hyperspectral video systems. The present method utilizes a restricted representation matrix and sampling matrix to reconstruct bands to a very large number without losing information content. Reference multi-band image vectors are created and those vectors are processed in a block-wise form to obtain custom orthonormal representation matrices. A sampling matrix is also constructed offline in the factory. The compressed sensing protocol is applied using a l1-norm optimization (or relaxation) algorithm to reconstruct large number of wavelength bands with each band being interspersed within the band of interest that are not imaged. The teaching hereof leads to very large number of bands without increasing the hardware cost.
摘要翻译：所公开的是使用压缩感测框架来增加高光谱视频系统中的波段数目的图像重构的系统和方法。本方法利用受限表示矩阵和采样矩阵将频带重构成非常大的数目，而不会丢失信息内容。创建参考多频带图像矢量并且以块形式处理这些矢量以获得自定义正交表示矩阵。采样矩阵也在工厂内离线构建。使用l1范数优化（或松弛）算法应用压缩感测协议来重构大量波长带，其中每个频带分散在不成像的感兴趣的频带内。这里的教学导致非常多的频带，而不增加硬件成本。

5. 发明申请

US20100177366A1 METHOD, APPARATUS AND SYSTEM FOR MATCHING COLOR GAMUTS OF MULTIPLE IMAGE TRANSFER DEVICES 有权
标题翻译：用于匹配多个图像传输设备的彩色游戏的方法，装置和系统
公开(公告)号：US20100177366A1
公开(公告)日：2010-07-15
申请号：US12352350
申请日：2009-01-12
申请人： Lalit Keshav MESTHA , Prudhvi Krishna GURRAM , Alvaro Enrique GIL , Palghat RAMESH
发明人： Lalit Keshav MESTHA , Prudhvi Krishna GURRAM , Alvaro Enrique GIL , Palghat RAMESH
IPC分类号： G03F3/08
CPC分类号： H04N1/6052 , H04N1/6058
摘要： A method for adjusting the gamuts of a set of printers to match the gamuts across a population of printers using mass targets. The method involves printing color patches suitably positioned in the color gamut with CMYK separations and simultaneously actuating DMA targets to the level 2 controls of the printers using closed loop control algorithms. An extreme MIMO control algorithm is used to converge to the desired L*a*b* targets by adjusting mass targets to the printing system in an iterative fashion to maximize the common intersection gamut across the printers.
摘要翻译：一种用于调整一组打印机的色域的方法，以使使用质量目标的打印机群体匹配色域。该方法包括使用CMYK分色印刷适当定位在色域中的色块，并使用闭环控制算法同时将DMA目标驱动到打印机的二级控制。通过以迭代的方式调整质量目标到打印系统，通过极大程度上跨打印机的公共交叉色域来使用极端的MIMO控制算法来收敛到所需的L * a * b *目标。

6. 发明申请

US20090185230A1 METHOD AND APPARATUS FOR OPTIMUM BLACK COMPONENT DETERMINATION FOR GRAY COMPONENT REPLACEMENT 有权
标题翻译：用于灰分组分替换的最佳黑色成分测定方法和装置
公开(公告)号：US20090185230A1
公开(公告)日：2009-07-23
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： H04N1/60 , G06K15/00
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。

7. 发明申请

US20130182266A1 GENERATING AN IMAGE PROFILE LUT FOR A N-COLOR MARKING DEVICE VIA MULTI-OBJECTIVE COST MINIMIZATION 有权
标题翻译：通过多目标成本最小化生成用于N色彩标记设备的图像配置文件列表
公开(公告)号：US20130182266A1
公开(公告)日：2013-07-18
申请号：US13351630
申请日：2012-01-17
申请人： Lina FU , Alvaro Enrique GIL , Lalit Keshav MESTHA
发明人： Lina FU , Alvaro Enrique GIL , Lalit Keshav MESTHA
IPC分类号： H04N1/60
CPC分类号： H04N1/52 , H04N1/603
摘要： What is disclosed is a method for profile LUT construction which uses a cost function to provide improvements to one or more image quality attributes present in printed images while imposing constraints in terms of color accuracy and spectral response to achieve a color match under various illuminants. Image quality attributes are selected. A reference profile is selected. For each node, candidate recipes are found which reproduce L*a*b* colors within a threshold em. Recipes are pruned to a subset containing recipes where a spectral difference between a predicted spectra corresponding to N color levels and a reference reflectance spectra corresponding to a spectra of a recipe produced by the reference profile, is less than a threshold. A cost function is computed and a recipe identified which minimizes the cost for this node. The process repeats for all nodes to produce a new profile LUT.
摘要翻译：所公开的是用于轮廓LUT构造的方法，其使用成本函数来提供对印刷图像中存在的一个或多个图像质量属性的改进，同时在颜色精度和光谱响应方面施加约束以实现各种光源下的颜色匹配。选择图像质量属性。选择参考资料。对于每个节点，找到在阈值em内再现L * a * b *颜色的候选配方。将食谱修剪成包括配方的子集，其中对应于N个颜色级别的预测光谱与对应于由参考轮廓产生的配方的光谱的参考反射光谱之间的光谱差小于阈值。计算成本函数，并确定最小化此节点成本的配方。该过程重复所有节点以产生新的配置文件LUT。

8. 发明申请

US20100259794A1 METHODS AND ALGORITHMS FOR ADJUSTING GLOSS LEVELS IN PRINTERS 有权
标题翻译：用于调整打印机中GLOSS级别的方法和算法
公开(公告)号：US20100259794A1
公开(公告)日：2010-10-14
申请号：US12421745
申请日：2009-04-10
申请人： Connie PURDUM , Lalit Keshav MESTHA , Martin MALTZ , Frederick J. RAMSEY , Alvaro Enrique GIL
发明人： Connie PURDUM , Lalit Keshav MESTHA , Martin MALTZ , Frederick J. RAMSEY , Alvaro Enrique GIL
IPC分类号： H04N1/405
CPC分类号： H04N1/407 , H04N1/00002 , H04N1/00015 , H04N1/00023 , H04N1/00031 , H04N1/00045 , H04N1/00068 , H04N1/00087 , H04N1/0009 , H04N1/00092 , H04N1/00726 , H04N1/2307 , H04N1/2323 , H04N1/233 , H04N1/2338
摘要： A printer configured to adjust gloss appearance of images includes a marking engine configured to render an image on a substrate from input image data; and a controller configured to: (i) correlate a minimum luminance value to be used by the printer based on a gloss selection; (ii) determine a black point compensation function based on the correlated minimum luminance value; and (iii) adjust luminance values for input image data using the determined black point compensation function. A method to adjust gloss appearance of images is also provided.
摘要翻译：配置为调整图像的光泽外观的打印机包括：配置成从输入图像数据在基板上渲染图像的标记引擎; 以及控制器，其被配置为：（i）基于光泽选择来关联所述打印机使用的最小亮度值; （ii）基于相关的最小亮度值确定黑点补偿功能; 和（iii）使用确定的黑点补偿功能来调整输入图像数据的亮度值。还提供了一种调整图像光泽度外观的方法。

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