公开(公告)号：US20080253649A1

公开(公告)日：2008-10-16

申请号：US11890888

申请日：2007-08-08

Applicant: Yao Rong Wang ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

Inventor： Yao Rong Wang ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

IPC: G06K9/00 ,  G06F15/00

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 augmented basis vectors representing the LUT, L*a*b* values and multiple GCR/UCRs; 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，L * a * b *值和多个GCR / UCR的增强基向量集合; 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：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：US20130345568A1

公开(公告)日：2013-12-26

申请号：US13532057

申请日：2012-06-25

Applicant: Lalit Keshav MESTHA ,  Survi KYAL ,  Beilei XU ,  Himanshu J. MADHU

Inventor： Lalit Keshav MESTHA ,  Survi KYAL ,  Beilei XU ,  Himanshu J. MADHU

IPC: A61B5/024 ,  A61B6/00

CPC classification number: A61B5/02405 ,  A61B5/0004 ,  A61B5/02416 ,  A61B5/7235 ,  A61B2576/00

Abstract: What is disclosed is a video-based system and method for estimating heart rate variability from time-series signals generated from video images captured of a subject of interest being monitored for cardiac function. In a manner more fully disclosed herein, low frequency and high frequency components are extracted from a time-series signal obtained by processing a video of the subject being monitored. A ratio of the low and high frequency of the integrated power spectrum within these components is computed. Analysis of the dynamics of this ratio over time is used to estimate heart rate variability. The teachings hereof can be used in a continuous monitoring mode with a relatively high degree of measurement accuracy and find their uses in a variety of diverse applications such as, for instance, emergency rooms, cardiac intensive care units, neonatal intensive care units, and various telemedicine applications.

Abstract translation: 所公开的是一种基于视频的系统和方法，用于从由心脏功能监测的感兴趣对象的视频图像产生的时间序列信号估计心率变异性。 以这里更完全公开的方式，从通过处理被监视对象的视频获得的时间序列信号中提取低频和高频分量。 计算这些分量内的综合功率谱的低频和高频比。 分析这个比率随时间的动力学被用于估计心率变异性。 其教导可以以相对较高的测量精度的连续监测模式使用，并且可以在各种各样的应用中使用，例如急诊室，心脏重症监护病房，新生儿重症监护病房和各种各样的 远程医疗应用。

公开(公告)号：US20130343634A1

公开(公告)日：2013-12-26

申请号：US13533678

申请日：2012-06-26

Applicant: Beilei XU ,  Lalit Keshav MESTHA ,  Edgar A. BERNAL

Inventor： Beilei XU ,  Lalit Keshav MESTHA ,  Edgar A. BERNAL

IPC: G06K9/36

CPC classification number: G06T7/0075 ,  G01B11/25 ,  G06K9/36 ,  G06K9/46 ,  G06T7/521 ,  G06T7/55 ,  G06T7/593 ,  G06T2207/10012 ,  G06T2207/20104 ,  G06T2207/30076

Abstract: What is disclosed is system and method for contemporaneously reconstructing images of a scene illuminated with unstructured and structured illumination sources. In one embodiment, the system comprises capturing a first 2D image containing energy reflected from a scene being illuminated by a structured illumination source and a second 2D image containing energy reflected from the scene being illuminated by an unstructured illumination source. A controller effectuates a manipulation of the structured and unstructured illumination sources during capture of the video. A processor is configured to execute machine readable program instructions enabling the controller to manipulate the illumination sources, and for effectuating the contemporaneous reconstruction of a 2D intensity map of the scene using the second 2D image and of a 3D surface map of the scene using the first 2D image. The reconstruction is effectuated by manipulating the illumination sources.

Abstract translation: 公开的是同时重建用非结构化和结构化照明源照明的场景的图像的系统和方法。 在一个实施例中，系统包括捕获包含由结构化照明源照亮的场景反射的能量的第一2D图像和包含由非结构化照明源照亮的场景反射的能量的第二2D图像。 在拍摄视频期间，控制器实现对结构化和非结构化照明源的操纵。 处理器被配置为执行机器可读程序指令，使得控制器能够操纵照明源，并且使用第二2D图像和场景的3D表面图使用第一图像来实现场景的2D强度地图的同时重建 2D图像。 通过操纵照明源来实现重建。

公开(公告)号：US20130343614A1

公开(公告)日：2013-12-26

申请号：US13528307

申请日：2012-06-20

Applicant: Survi KYAL ,  Lalit Keshav MESTHA ,  Beilei XU

Inventor： Survi KYAL ,  Lalit Keshav MESTHA ,  Beilei XU

IPC: G06K9/36

CPC classification number: G06K9/6217 ,  A61B5/024 ,  G06K9/0057 ,  G06K2209/05

Abstract: What is disclosed is a computationally efficient system and method for estimating a subject's cardiac pulse rate from multi-channel source video data. In one embodiment, A time-series signal is continuously processed by repeatedly: (1) conditioning the estimated source signal obtained on a previous iteration to produce a next reference signal; (2) using this reference signal to perform constrained source separation on this next segment to obtain an estimated source signal. A frequency at which this next estimated source signal converged is the subject's estimated cardiac pulse rate for this signal segment. The reference signal is repeatedly updated. Upon convergence, the sliding window is shifted to define a next segment of the time-series signal. The method repeats for each time-series signal segment on a continuous basis or until a termination criteria is met. In such a manner, the subject's cardiac pulse rate is estimated from video data on a continuous basis.

Abstract translation: 所公开的是用于从多信道源视频数据估计被摄体的心脏脉搏率的计算有效的系统和方法。 在一个实施例中，时间序列信号通过重复地连续处理：（1）调节在先前迭代中获得的估计的源信号以产生下一个参考信号; （2）使用该参考信号在该下一个段执行受限的源分离以获得估计的源信号。 该下一个估计的源信号收敛的频率是该信号段的对象的估计的心脏脉搏率。 参考信号被重复更新。 在收敛时，滑动窗口被移动以限定时间序列信号的下一个段。 该方法在连续的基础上重复每个时间序列信号段，或直到满足终止标准。 以这种方式，从连续的视频数据估计被检者的心脏脉搏率。

公开(公告)号：US20130322729A1

公开(公告)日：2013-12-05

申请号：US13483992

申请日：2012-05-30

Applicant: Lalit Keshav MESTHA ,  Beilei XU ,  Edgar A. BERNAL

Inventor： Lalit Keshav MESTHA ,  Beilei XU ,  Edgar A. BERNAL

IPC: G06K9/46

CPC classification number: G06T7/0016 ,  A61B5/0077 ,  A61B5/02 ,  A61B5/021 ,  A61B5/02416 ,  A61B5/029 ,  A61B5/489 ,  G06T2207/10024 ,  G06T2207/10048 ,  G06T2207/30076 ,  G06T2207/30101

Abstract: What is disclosed is a non-contact system and method for determining cardiac function parameters from a vascular pattern identified from RGB and IR video signals captured simultaneously of a region of exposed skin of a subject of interest. In one embodiment, a video of a region of exposed skin is captured using a video camera that captures color values for pixels over visible channels and an IR camera that measures pixel intensity values in wavelength ranges of interest. Pixel intensity values are processed to generate a vascular binary mask that indicates pixel locations corresponding to the vascular pathways. The IR images are registered with corresponding data from the camera's visible channels such that pixels that correspond to the vascular pattern can be isolated in each frame of the video of visible color data. Once processed, pixels associated with the isolated vascular patterns are analyzed to determine desired cardiac function parameters.

Abstract translation: 公开的是一种非接触式系统和方法，用于根据由目标受试者的暴露皮肤区域同时捕获的RGB和IR视频信号识别的血管图案来确定心脏功能参数。 在一个实施例中，使用捕获可见信道上的像素的颜色值的摄像机和测量感兴趣的波长范围内的像素强度值的IR照相机捕获暴露皮肤区域的视频。 处理像素强度值以产生指示对应于血管通路的像素位置的血管二进制掩模。 红外图像与来自相机的可视通道的相应数据一起登记，使得与血管图案相对应的像素可以在可见颜色数据的视频的每个帧中被隔离。 一旦处理，分析与分离的血管图案相关联的像素以确定期望的心脏功能参数。

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。