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 。

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。

公开(公告)号：US20130108236A1

公开(公告)日：2013-05-02

申请号：US13281975

申请日：2011-10-26

申请人： Lalit Keshav MESTHA ,  Takashi TANAKA

发明人： Lalit Keshav MESTHA ,  Takashi TANAKA

IPC分类号： H04N5/775

CPC分类号： G06T5/10 ,  G06T5/001 ,  G06T2207/10016 ,  G06T2207/20052 ,  G06T2207/30076

摘要： What is disclosed is a system and method for reconstructing a video signal such that selected signal components have been emphasized. Methods are disclosed for reducing the source video data to its independent signal components for selection. The source video is reconstructed, in a manner more fully disclosed herein, such that the selected component(s) are emphasized in the reconstructed video during video playback. The methods disclosed herein provide a solution for filtering an original video such that technicians can use the reconstructed video to visually examine, for instance, a dominant region of a patient's vital signals. The teachings hereof find their uses in a wide array of remote sensing applications and, in particular, the telemedicine arts.

摘要翻译： 公开的是用于重建视频信号的系统和方法，使得已经强调所选择的信号分量。 公开了用于将源视频数据减少到其独立信号分量用于选择的方法。 以更全面地公开的方式重建源视频，使得在视频重放期间在重建的视频中强调所选择的组件。 本文公开的方法提供了用于过滤原始视频的解决方案，使得技术人员可以使用重建的视频来目视检查患者生命信号的主要区域。 这些教导在各种遥感应用，特别是远程医疗艺术中发现其用途。

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。

公开(公告)号：US20110026053A1

公开(公告)日：2011-02-03

申请号：US12533542

申请日：2009-07-31

申请人： Alvaro E. GIL ,  Yao Rong WANG ,  Lalit Keshav MESTHA

发明人： Alvaro E. GIL ,  Yao Rong WANG ,  Lalit Keshav MESTHA

IPC分类号： G06F15/00 ,  G06K9/00

CPC分类号： H04N1/54 ,  H04N1/6052 ,  H04N1/6088

摘要： A methodology is disclosed to achieve adaptive illumination independent matching of out-of-gamut spot colors. In one embodiment, the methodology includes an iterative process to determine a variety device specific recipes for out-of-gamut spot colors across different illumination spectra and gamut mapping techniques, and then automatically choosing and/or recommending the optimal recipe and gamut mapping technique that provides the lowest color dispersion across a variety of illuminants under consideration.

摘要翻译： 公开了一种用于实现色域外色彩的自适应照明独立匹配的方法。 在一个实施例中，该方法包括迭代过程，以确定跨不同照明光谱和色域映射技术的色域外色彩的特定配方，然后自动选择和/或推荐最佳配方和色域映射技术， 在考虑的各种光源下提供最低的色散。

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。