公开(公告)号：US08838209B2

公开(公告)日：2014-09-16

申请号：US13401286

申请日：2012-02-21

Applicant: Lalit Keshav Mestha ,  Survi Kyal

Inventor： Lalit Keshav Mestha ,  Survi Kyal

IPC: A61B5/00

CPC classification number: G06T7/0012 ,  A61B5/0075 ,  A61B5/02125 ,  G06T2207/30076 ,  G06T2207/30104

Abstract: What is disclosed is a system and method for determining an arterial pulse transit time of a subject of interest in a remote sensing environment. A video imaging system is used to capture a time varying source images of a proximal and distal region of a subject intended to be analyzed for arterial pulse transit time. A time series signal for each of the proximal and distal regions is extracted from the source images and a phase of each of the extracted time series signals is computed. A difference is then computed between these phases. This phase difference is a monotonic function of frequencies in the signals. From the monotonic function, an arterial pulse transit time of the subject is extracted. The subject's arterial pulse transit time is then communicated to a computer system. The computer system determines blood pressure, blood vessel blockage, blood flow velocity, or a peripheral neuropathy.

Abstract translation: 公开的是用于确定遥感环境中感兴趣的对象的动脉脉冲传播时间的系统和方法。 视频成像系统用于捕获旨在分析动脉脉冲传播时间的受试者的近端和远端区域的时变源图像。 从源图像提取每个近端和远端区域的时间序列信号，并且计算每个提取的时间序列信号的相位。 然后在这些阶段之间计算差异。 该相位差是信号中频率的单调函数。 从单调功能，提取对象的动脉脉冲传播时间。 然后将受试者的动脉脉冲传播时间传达到计算机系统。 计算机系统确定血压，血管阻塞，血流速度或周围神经病变。

公开(公告)号：US08790269B2

公开(公告)日：2014-07-29

申请号：US13103406

申请日：2011-05-09

Applicant: Beilei Xu ,  Lalit Keshav Mestha ,  Graham Pennington

Inventor： Beilei Xu ,  Lalit Keshav Mestha ,  Graham Pennington

IPC: A61B5/08

CPC classification number: A61B5/015 ,  A61B5/0008 ,  A61B5/08 ,  A61B2503/04 ,  A61B2576/00

Abstract: 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.

Abstract translation: 公开的是使用具有设置到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：US08768438B2

公开(公告)日：2014-07-01

申请号：US13532128

申请日：2012-06-25

Applicant: Lalit Keshav Mestha ,  Beilei Xu ,  Paul R. Austin

Inventor： Lalit Keshav Mestha ,  Beilei Xu ,  Paul R. Austin

IPC: A61B6/00

CPC classification number: A61B5/02416 ,  A61B5/0044 ,  A61B5/0452

Abstract: What is disclosed is a system and method for processing a time-series signal generated by video images captured of a subject of interest in a non-contact, remote sensing environment such that the existence of a cardiac arrhythmia can be determined for that subject. In one embodiment, a time-series signal generated is received. The time-series signal was generated from video images captured of a region of exposed skin where photoplethysmographic (PPG) signals of a subject of interest can be registered. Signal separation is performed on the time-series signal to extract a photoplethysmographic signal for the subject. Peak-to-peak pulse points are detected in the PPG signal using an adaptive threshold technique with successive thresholds being based on variations detected in previous magnitudes of the pulse peaks. The pulse points are then analyzed to obtain peak-to-peak pulse dynamics. The existence of cardiac arrhythmias is determined for the subject based on the pulse dynamics.

Abstract translation: 所公开的是用于处理由非接触式遥感环境中感兴趣的对象捕获的视频图像产生的时间序列信号的系统和方法，从而可以确定该对象的心律失常的存在。 在一个实施例中，接收所产生的时间序列信号。 时间序列信号是从拍摄感兴趣的受试者的光学体积描记（PPG）信号可以被登记的暴露皮肤区域的视频图像产生的。 对时间序列信号执行信号分离，以提取对象的光电体积描记信号。 使用自适应阈值技术在PPG信号中检测峰峰值脉冲点，其中连续阈值基于在脉冲峰值的先前幅度中检测到的变化。 然后分析脉冲点以获得峰 - 峰脉冲动态。 基于脉搏动力学确定对象的心律失常的存在。

公开(公告)号：US08712126B2

公开(公告)日：2014-04-29

申请号：US13417979

申请日：2012-03-12

Applicant: Nischal M. Piratla ,  Lalit Keshav Mestha ,  Meera Sampath

Inventor： Nischal M. Piratla ,  Lalit Keshav Mestha ,  Meera Sampath

IPC: G06K9/00

CPC classification number: G06K9/00979

Abstract: What is disclosed is a web-based system which comprises, in part, video analysis modules for performing different types of analysis services on a video, and a server in network communication with a user's computing device. A user selects one or more menu options displayed on a webpage. Each of the menu options is associated with a respective video analysis available to the user. The user makes their election and, within the same session, uploads to the server a video desired to be analyzed with respect to each of the video analysis services selected by the user. Once the server has obtained the user's selection(s) and has received the uploaded video, the server communicates the video to each video analysis module associated with each of the respective analysis services. Upon each completion of the video analysis, the results are communicated back to the user. Various embodiments are disclosed.

Abstract translation: 公开的是基于网络的系统，其部分地包括用于在视频上执行不同类型的分析服务的视频分析模块，以及与用户的计算设备进行网络通信的服务器。 用户选择网页上显示的一个或多个菜单选项。 每个菜单选项与用户可用的各自的视频分析相关联。 用户进行选举，并且在同一会话内，向服务器上传相对于由用户选择的每个视频分析服务而要分析的视频。 一旦服务器获得用户的选择并已经接收到上传的视频，服务器将该视频传送到与每个相应的分析服务相关联的每个视频分析模块。 在每次完成视频分析时，将结果传回给用户。 公开了各种实施例。

公开(公告)号：US08670153B2

公开(公告)日：2014-03-11

申请号：US12942414

申请日：2010-11-09

Applicant: Alvaro Enrique Gil ,  Lalit Keshav Mestha ,  Wencheng Wu ,  Edul N. Dalal

Inventor： Alvaro Enrique Gil ,  Lalit Keshav Mestha ,  Wencheng Wu ,  Edul N. Dalal

IPC: H04N1/60 ,  G06K9/00

CPC classification number: H04N1/6058

Abstract: What is disclosed is a novel system and method for mapping out-of-gamut colors to a device's gamut to improve image quality in a color document reproduction device involves performing the following. First, an out-of-gamut color xi, which is intended to be mapped to a boundary surface of a color gamut of a color marking device, is selected. A gamut mapping function is also selected. The selected gamut mapping function is intended to be applied to the selected out-of-gamut color point. At least one performance attribute is then selected for the color marking device and a multi-objective cumulative cost JT is determined based upon a combination of costs Jgm and Js. The multi-objective cumulative cost JT is then iteratively driven to a minimum. Once the minimum has been determined, a gamut mapping of the selected out-of-gamut color can then be performed using the minimized multi-objective cumulative cost. Various embodiments are disclosed.

Abstract translation: 公开的是用于将色域外的色彩映射到设备的色域以改善彩色文档再现设备中的图像质量的新颖系统和方法，包括执行以下操作。 首先，选择旨在映射到彩色标记装置的色域的边界表面的色域外的色彩xi。 还选择色域映射功能。 所选择的色域映射功能旨在应用于所选择的色域外色点。 然后为颜色标记装置选择至少一个性能属性，并且基于成本Jgm和Js的组合来确定多目标累积成本JT。 然后将多目标累积成本JT迭代地驱动到最小。 一旦确定了最小值，则可以使用最小化的多目标累积成本来执行所选出的色域外颜色的色域映射。 公开了各种实施例。

公开(公告)号：US08611608B2

公开(公告)日：2013-12-17

申请号：US13215401

申请日：2011-08-23

Applicant: Zhigang Fan ,  Abu Saeed Islam ,  Peter Paul ,  Beilei Xu ,  Lalit Keshav Mestha

Inventor： Zhigang Fan ,  Abu Saeed Islam ,  Peter Paul ,  Beilei Xu ,  Lalit Keshav Mestha

IPC: G06K9/00

CPC classification number: G06K9/00234 ,  G06K9/00838 ,  G06K9/2018

Abstract: What is disclosed is a system and method for determining whether a front seat in a motor vehicle is occupied based on seat pattern recognition. The present invention takes advantage of the observation that an unoccupied seat of a motor vehicle exhibits features which are distinguishable from an occupied seat. An unoccupied motor vehicle seat typically features long contiguous horizontal line segments and curve segments, and substantially uniform areas encompassed by these segments which are not present in an occupied seat. The present method provides a long horizontal edge test which uses location information within a defined window of the image, edge linking, softness of the edge, number of lines, line/curve fitting, and other techniques to locate horizontal edges in the image which define a seat, and a uniformity step which determines whether the area bounded by the horizontal edges is relatively uniform indicating an unoccupied seat.

Abstract translation: 公开的是基于座椅图案识别来确定机动车辆中的前排座椅是否被占用的系统和方法。 本发明利用了这样的观察结果：机动车辆的空闲座椅表现出与被占用座椅不同的特征。 未占用的机动车辆座椅通常具有长的连续水平线段和曲线段，以及由这些段所包围的基本均匀的区域，其不存在于被占用的座椅中。 本方法提供了一种长的水平边缘测试，它使用图像的定义窗口内的位置信息，边缘链接，边缘柔软度，线数，线/曲线拟合以及其他技术来定位图像中的水平边缘 一个座位和一个均匀性步骤，确定由水平边缘限定的区域是否相对均匀，表示空闲的座位。

公开(公告)号：US08599432B2

公开(公告)日：2013-12-03

申请号：US12127675

申请日：2008-05-27

Applicant: Lalit Keshav Mestha ,  Tonya L. Love ,  Ta-Chen Hsu

Inventor： Lalit Keshav Mestha ,  Tonya L. Love ,  Ta-Chen Hsu

IPC: G06F15/00 ,  G06K1/00

CPC classification number: G03G13/01 ,  H04N1/54 ,  H04N1/6058

Abstract: A color management system is provided for enabling imaging of selected colors called spot colors that document dynamically adjusting the normal printer gamut to achieve extended colors. Developed mass may be increased or decreased by changing set points such as a photoreceptor roll charge, development bias or raster output scanner laser power.

Abstract translation: 提供了一种颜色管理系统，用于使被称为专色的所选颜色成像，其记录动态调整正常打印机色域以实现扩展颜色。 通过改变诸如感光体辊电荷，显影偏压或光栅输出扫描仪激光功率的设定点，可以增加或减少显影质量。

公开(公告)号：US08587657B2

公开(公告)日：2013-11-19

申请号：US13086006

申请日：2011-04-13

Applicant: Yao Rong Wang ,  Zhigang Fan ,  Lalit Keshav Mestha

Inventor： Yao Rong Wang ,  Zhigang Fan ,  Lalit Keshav Mestha

IPC: H04N7/18 ,  H04N5/33 ,  G06K9/00

CPC classification number: G06K9/00369 ,  G06K2009/4657 ,  G06T7/11 ,  G06T2207/10048 ,  G06T2207/30242

Abstract: What is disclosed is a novel system and method for determining the number of objects in an IR image obtained using an IR imaging system. In one embodiment, a total of N intensity values are collected for each pixel in an IR image using a IR imaging system comprising an IR detection device and an IR Illuminator. Intensity values are retrieved from a database which have been estimated for a plurality of known materials, such as skin and hair. A classification is determined for each pixel in the IR image using either a best fitting method of a reflectance, or a correlation method. Upon classification, a total number of objects in the IR image can be determined. The present system and method finds its intended uses in of real world applications such as, determining the number of occupants in a vehicle traveling in a HOV/HOT lane.

Abstract translation: 所公开的是用于确定使用IR成像系统获得的IR图像中的对象数量的新颖系统和方法。 在一个实施例中，使用包括IR检测装置和IR照明器的IR成像系统对IR图​​像中的每个像素收集总共N个强度值。 从已经为多种已知材料（例如皮肤和头发）估计的数据库检索强度值。 使用反射率的最佳拟合方法或相关方法来确定IR图像中的每个像素的分类。 在分类时，可以确定IR图像中的对象的总数。 本系统和方法在现实应用中找到其预期用途，例如确定在HOV / HOT车道中行驶的车辆中的乘客人数。

公开(公告)号：US08570442B2

公开(公告)日：2013-10-29

申请号：US13180895

申请日：2011-07-12

Applicant: Lalit Keshav Mestha ,  Alvaro Enrique Gil

Inventor： Lalit Keshav Mestha ,  Alvaro Enrique Gil

IPC: H04N5/14 ,  H04N9/64 ,  G06K9/36 ,  G06K9/46

CPC classification number: G06T5/50 ,  G06T2207/10036

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08547613B2

公开(公告)日：2013-10-01

申请号：US12915217

申请日：2010-10-29

Applicant: Lalit Keshav Mestha ,  Martin S. Maltz ,  Yao Rong Wang

Inventor： Lalit Keshav Mestha ,  Martin S. Maltz ,  Yao Rong Wang

IPC: H04N1/60 ,  G03F3/08 ,  G06K9/00

CPC classification number: H04N1/6022

Abstract: What is disclosed is a novel system and method of inheriting intended GCR into a 4-to-4 cascaded LUT to compensate for print engine change which adversely impacts the quality of an output print. The present method uses the device link transform to generate starting LUT nodes for the inverse of the drifted printer model by inputting CMYK or RGB into the device link at a color space resolution sufficient to determine output nodes. Lab and CMYK values are derived from this process, and a “starting LUT” is created at the Lab destination nodes. An iterative control begins with this starting LUT to produce an inverse drifted printer model that contains a close approximation for the intended GCR. The present method captures the intent of the device link transform for a fleet and generates the cascaded LUT for drift, specific printer, side1/side2, and other modes leading to special GCRs.

Abstract translation: 所公开的是将期望的GCR继承到4对4级联LUT中以补偿不利地影响输出打印质量的打印引擎改变的新型系统和方法。 本方法使用设备链接变换通过以足以确定输出节点的颜色空间分辨率将CMYK或RGB输入到设备链接中来生成漂移的打印机模型的倒数的起始LUT节点。 实验室和CMYK值是从该过程得到的，并且在实验室目标节点处创建一个“起始LUT”。 迭代控制开始于该起始LUT以产生包含对于预期GCR的近似近似的反漂移打印机模型。 本方法捕获了针对车队的设备链接变换的意图，并生成用于漂移，特定打印机，side1 / side2和导致特殊GCR的其他模式的级联LUT。