公开(公告)号：US20130181836A1

公开(公告)日：2013-07-18

申请号：US13419856

申请日：2012-03-14

申请人： George Cunha CARDOSO ,  Lalit Keshav MESTHA

发明人： George Cunha CARDOSO ,  Lalit Keshav MESTHA

IPC分类号： G06K9/62 ,  G08B21/00 ,  H04N7/18

CPC分类号： G01M15/108

摘要： What is disclosed is a system and method for image-based determination of concentration of CO and CO2 in a vehicle's exhaust gas in an emissions testing environment. In one embodiment, the present method involves receiving an IR image of the exhaust plume of a motor vehicle intended to be tested for CO and CO2 concentrations. The IR image has been captured using a mid-wave infrared camera with at least one optical filter tuned to the infrared absorption band of CO and CO2. The images are pre-processed to isolate pixels which contain the exhaust plume. The intensity values of pixels in those isolated regions are normalized and concentrations of CO and CO2 are determined via a calibration curve which relates pixel intensities to concentrations. The concentrations are compared to an emissions standard set for the vehicle to determine whether the vehicle is a gross polluter.

摘要翻译： 所公开的是用于在排放测试环境中基于图像确定车辆废气中CO和CO 2浓度的系统和方法。 在一个实施例中，本方法包括接收旨在被测试CO和CO 2浓度的机动车辆的排气羽流的IR图像。 使用中波红外摄像机捕获IR图像，其中至少一个光滤波器被调谐到CO和CO 2的红外吸收带。 图像被预处理以分离包含排气羽流的像素。 将这些孤立区域中的像素的强度值归一化，并通过将像素强度与浓度相关联的校准曲线来确定CO和CO 2的浓度。 将浓度与车辆的排放标准进行比较，以确定车辆是否是总污染物。

公开(公告)号：US20130079649A1

公开(公告)日：2013-03-28

申请号：US13247683

申请日：2011-09-28

申请人： Lalit Keshav MESTHA ,  Survi KYAL ,  Gill Rafael TSOURI ,  Sohail A. DIANAT ,  Beilei XU

发明人： Lalit Keshav MESTHA ,  Survi KYAL ,  Gill Rafael TSOURI ,  Sohail A. DIANAT ,  Beilei XU

IPC分类号： A61B5/02

CPC分类号： A61B5/0022 ,  A61B5/0077 ,  A61B5/024 ,  A61B2576/00 ,  G01J5/026 ,  G01J5/089 ,  G06F19/00 ,  G16H40/67

摘要： What is disclosed is a system and method for recovering a patient's cardiac pulse rate from a sequence of video images recording of that patient. In one embodiment, a reference signal of a particular frequency is generated at predetermined frequency intervals and a constrained source separation is performed on the source data to obtain an estimation of the source signal intended to be recovered. The reference signal is updated and constrained source separation is again performed. These operations are repeated for all frequencies of the reference signal. The frequency at which a minimum error is achieved is determined to be the subject's recovered cardiac pulse frequency. In such a manner, the source signal is extracted and recovered reliably from captured multi-channel RGB signals or multispectral signals. The teachings hereof find their uses in a variety of medical solutions including various military, security and telemedicine applications. Various embodiments are disclosed.

摘要翻译： 所公开的是用于从记录该患者的视频图像的序列中恢复患者心脏脉搏率的系统和方法。 在一个实施例中，以预定的频率间隔产生特定频率的参考信号，并且对源数据执行受限的源分离以获得旨在被恢复的源信号的估计。 更新参考信号并再次执行约束源分离。 对参考信号的所有频率重复这些操作。 实现最小误差的频率被确定为受试者的恢复心脏脉搏频率。 以这种方式，从捕获的多通道RGB信号或多光谱信号可靠地提取和恢复源信号。 其教学方法可用于各种医疗解决方案，包括各种军事，安全和远程医疗应用。 公开了各种实施例。

公开(公告)号：US20130077958A1

公开(公告)日：2013-03-28

申请号：US13239642

申请日：2011-09-22

申请人： Beilei XU ,  Lalit Keshav MESTHA ,  Yao Rong WANG ,  Peter PAUL

发明人： Beilei XU ,  Lalit Keshav MESTHA ,  Yao Rong WANG ,  Peter PAUL

IPC分类号： G03B11/00 ,  G02B26/00

CPC分类号： G06K9/209 ,  G01J3/2823 ,  G01J3/36 ,  G02B5/201 ,  G02B5/208 ,  G03B11/00 ,  G06K9/00255 ,  G06K2009/00932

摘要： What is disclosed is a filter array for a multi-resolution multi-spectral camera system which not only captures 2D images at multiple wavelength bands simultaneously but also at a spatial resolution that meets the demand for spatial feature extraction. The present system optimizes filter bands that provide high image contrast at the highest possible resolution to enable spatial feature extraction and other wavelength bands at lower resolution to achieve maximum number of wavelength bands (e.g. spectral resolution) for multi-spectral analysis. After determining the required spatial resolution and number of wavelength bands for spectral analysis, multiple filters are arranged in a geometric pattern with each filter being designed to have specified wavelength and spatial resolution. Physical sizes of filters differ within each filter group. This maximizes the detector usage while optimizing the trade-off between spatial resolution and spectral resolution. Filter gaps are fixed or tuned to wavelengths of interest.

摘要翻译： 公开的是用于多分辨率多光谱照相机系统的滤光器阵列，其不仅同时捕获多个波长带处的2D图像，而且以满足空间特征提取的需求的空间分辨率。 本系统优化以最高可能分辨率提供高图像对比度的滤波器频带，以便能够以较低分辨率进行空间特征提取和其他波长带，以实现用于多光谱分析的最大数量的波段（例如光谱分辨率）。 在确定所需的空间分辨率和用于频谱分析的波长带数之后，多个滤波器以几何图形排列，每个滤波器被设计为具有指定的波长和空间分辨率。 每个过滤器组中过滤器的物理尺寸不同。 这最大限度地提高了检测器的使用率，同时优化了空间分辨率和光谱分辨率之间的折衷。 滤波器间隙固定或调谐到感兴趣的波长。

公开(公告)号：US20120289850A1

公开(公告)日：2012-11-15

申请号：US13103406

申请日：2011-05-09

申请人： Beilei XU ,  Lalit Keshav MESTHA ,  Graham PENNINGTON

发明人： Beilei XU ,  Lalit Keshav MESTHA ,  Graham PENNINGTON

IPC分类号： A61B5/08

CPC分类号： A61B5/015 ,  A61B5/0008 ,  A61B5/08 ,  A61B2503/04 ,  A61B2576/00

摘要： What is disclosed is a system and method for monitoring respiration of a subject or subject of interest using a thermal imaging system with single or multiple spectral bands set to a temperature range of a facial region of that person. Temperatures of extremities of the head and face are used to locate facial features in the captured thermal images, i.e., nose and mouth, which are associated with respiration. The RGB signals obtained from the camera are plotted to obtain a respiration pattern. From the respiration pattern, a rate of respiration is obtained. The system includes display and communication interfaces wherein alerts can be activated if the respiration rate falls outside a level of acceptability. The teachings hereof find their uses in an array of devices such as, for example, devices which monitor the respiration of an infant to signal the onset of a respiratory problem or failure.

摘要翻译： 公开的是使用具有设置在该人脸部区域的温度范围的单个或多个光谱带的热成像系统来监测受试者或感兴趣受试者的呼吸的系统和方法。 使用头部和脸部四肢的温度来定位与呼吸相关联的捕获的热图像即鼻子和嘴部中的面部特征。 绘制从照相机获得的RGB信号以获得呼吸模式。 从呼吸模式，获得呼吸率。 该系统包括显示和通信接口，其中如果呼吸速率落在可接受程度之外，则可以激活警报。 本发明的教导将其用于一系列装置中，例如监测婴儿的呼吸以指示呼吸问题或失败的发作的装置。

公开(公告)号：US20110149312A1

公开(公告)日：2011-06-23

申请号：US12645859

申请日：2009-12-23

申请人： Lalit Keshav MESTHA ,  Yonghui ZHAO ,  Yao Rong WANG

发明人： Lalit Keshav MESTHA ,  Yonghui ZHAO ,  Yao Rong WANG

IPC分类号： H04N1/60 ,  G09G5/02 ,  G01J3/40

CPC分类号： G01J3/46 ,  G01J3/462 ,  G09G2340/06 ,  G09G2358/00 ,  G09G2380/00 ,  H04N1/6033 ,  H04N1/62

摘要： What is disclosed is a novel system and method for generating a spectral matching guide for spot color print applications. Spectral matching values are determined for spot colors obtained from a library of spot colors. A spectral matching guide is created from the spot colors and their respective spectral matching values in a manner more fully disclosed herein. Thereafter, when a user desires to render a job in a particular spot color, the associated spectral matching value for that spot color can be obtained from the spectral matching guide. In other embodiments, recommendations in the form of a suggested printer to use, a media type, a halftone screen, and other meaningful assistance can be provided for selection of spot colors for a given print/copy job that are less sensitive to varying illuminations. The present spectral matching guide provides meaningful extensions in spectral color reproduction in print/copy job environments.

摘要翻译： 公开的是用于产生专色印刷应用的光谱匹配指南的新型系统和方法。 确定从专色库获得的专色的光谱匹配值。 以这种更全面地公开的方式，从专色和它们各自的光谱匹配值产生光谱匹配指南。 此后，当用户期望以特定专色渲染作业时，可以从光谱匹配指南获得该专色的相关的光谱匹配值。 在其他实施例中，可以提供建议使用的打印机的形式的建议，介质类型，半色调屏幕和其他有意义的帮助，用于对对变化的照明不太敏感的给定打印/复印作业的专色的选择。 本光谱匹配指南为打印/复印作业环境中的色彩再现提供了有意义的扩展。

公开(公告)号：US20090316165A1

公开(公告)日：2009-12-24

申请号：US12143040

申请日：2008-06-20

申请人： Lalit Keshav MESTHA ,  Peter Stanley FISHER

发明人： Lalit Keshav MESTHA ,  Peter Stanley FISHER

IPC分类号： H04N1/60

CPC分类号： H04N1/6058

摘要： An apparatus (100) and method (200) that controls color of a clear coated image on media is disclosed. The apparatus may include a controller (110) configured to control operations of the apparatus. The apparatus may include a memory (120) coupled to the controller. The memory may include reference color information corresponding to a desired color of an output image. The apparatus may include a front end (130) configured to provide a marking engine control signal corresponding to the desired color of the output image. The apparatus may include a color marking engine (140) coupled to the front end, where the color marking engine can be configured to generate an image on media responsive to the marking engine control signal using image output settings. The apparatus may include a clear coat finisher (150) configured to coat the image on the media with a clear coat to create a clear coated image on the media. The apparatus may include a sensor (160) configured to measure color attributes of the clear coated image and configured to provide color information of the clear coated image. The controller can be configured to determine a difference between the color information of the clear coated image and the reference color information and can be configured to adjust the image output settings according to the difference between the color information and the reference color information to achieve adjusted image output settings.

摘要翻译： 公开了一种在介质上控制透明涂覆图像的颜色的设备（100）和方法（200）。 该装置可以包括被配置为控制装置的操作的控制器（110）。 该装置可以包括耦合到控制器的存储器（120）。 存储器可以包括对应于输出图像的期望颜色的参考颜色信息。 该装置可以包括被配置为提供与输出图像的期望颜色相对应的标记引擎控制信号的前端（130）。 该装置可以包括耦合到前端的颜色标记引擎（140），其中颜色标记引擎可以被配置为响应于使用图像输出设置的标记引擎控制信号在媒体上产生图像。 该设备可以包括透明涂层整理器（150），其被配置为用透明涂层在介质上涂覆图像，以在介质上产生清晰的涂覆图像。 该装置可以包括被配置为测量透明涂覆图像的颜色属性并被配置为提供透明涂覆图像的颜色信息的传感器（160）。 控制器可以被配置为确定透明涂覆图像的颜色信息与参考颜色信息之间的差异，并且可以被配置为根据颜色信息和参考颜色信息之间的差来调整图像输出设置，以实现调整图像 输出设置。

公开(公告)号：US20130345568A1

公开(公告)日：2013-12-26

申请号：US13532057

申请日：2012-06-25

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

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

IPC分类号： A61B5/024 ,  A61B6/00

CPC分类号： A61B5/02405 ,  A61B5/0004 ,  A61B5/02416 ,  A61B5/7235 ,  A61B2576/00

摘要： 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.

摘要翻译： 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

申请人： Beilei XU ,  Lalit Keshav MESTHA ,  Edgar A. BERNAL

发明人： Beilei XU ,  Lalit Keshav MESTHA ,  Edgar A. BERNAL

IPC分类号： G06K9/36

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

摘要： 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.

摘要翻译： 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

申请人： Survi KYAL ,  Lalit Keshav MESTHA ,  Beilei XU

发明人： Survi KYAL ,  Lalit Keshav MESTHA ,  Beilei XU

IPC分类号： G06K9/36

CPC分类号： G06K9/6217 ,  A61B5/024 ,  G06K9/0057 ,  G06K2209/05

摘要： 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.

摘要翻译： 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

申请人： Lalit Keshav MESTHA ,  Beilei XU ,  Edgar A. BERNAL

发明人： Lalit Keshav MESTHA ,  Beilei XU ,  Edgar A. BERNAL

IPC分类号： G06K9/46

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

摘要： 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.

摘要翻译： 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。