公开(公告)号：US09020185B2

公开(公告)日：2015-04-28

申请号：US13247575

申请日：2011-09-28

申请人： Lalit K. Mestha ,  Beilei Xu

发明人： Lalit K. Mestha ,  Beilei Xu

IPC分类号： G06K9/00 ,  A61B5/00 ,  A61B5/024 ,  G06K9/20

CPC分类号： A61B5/0075 ,  A61B5/0077 ,  A61B5/024 ,  A61B5/7257 ,  G06K9/00362 ,  G06K9/0051 ,  G06K9/0057 ,  G06K9/2018 ,  G06K2009/00939 ,  G06T7/0016 ,  G06T2207/10024 ,  G06T2207/10048 ,  G06T2207/30076

摘要： An embodiment generally relates to systems and methods for estimating heart rates of individuals using non-contact imaging. A processing module can process multi-spectral video images of individuals and detect skin blobs within different images of the multi-spectral video images. The skin blobs can be converted into time series signals and processed with a band pass filter. Further, the time series signals can be processed to separate pulse signals from unnecessary signals. The heart rate of the individual can be estimated according to the resulting time series signal processing.

摘要翻译： 一个实施方案通常涉及用于估计使用非接触成像的个体心率的系统和方法。 处理模块可以处理个体的多光谱视频图像并检测多光谱视频图像的不同图像内的皮肤斑点。 皮肤斑点可以转换成时间序列信号，并用带通滤波器处理。 此外，时间序列信号可以被处理以将脉冲信号与不必要的信号分开。 可以根据所得到的时间序列信号处理来估计个体的心率。

公开(公告)号：US08897522B2

公开(公告)日：2014-11-25

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： G06K9/00 ,  A61B5/02

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。

公开(公告)号：US08790269B2

公开(公告)日：2014-07-29

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

申请人： Lalit Keshav Mestha ,  Beilei Xu ,  Paul R. Austin

发明人： Lalit Keshav Mestha ,  Beilei Xu ,  Paul R. Austin

IPC分类号： A61B6/00

CPC分类号： A61B5/02416 ,  A61B5/0044 ,  A61B5/0452

摘要： 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.

摘要翻译： 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：US08611608B2

公开(公告)日：2013-12-17

申请号：US13215401

申请日：2011-08-23

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

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

IPC分类号： G06K9/00

CPC分类号： G06K9/00234 ,  G06K9/00838 ,  G06K9/2018

摘要： 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.

摘要翻译： 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：US20130324876A1

公开(公告)日：2013-12-05

申请号：US13486637

申请日：2012-06-01

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

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

IPC分类号： A61B5/091

CPC分类号： A61B5/091 ,  A61B5/0064 ,  A61B5/1077 ,  A61B5/1128 ,  A61B5/1135 ,  G01B11/2527

摘要： What is disclosed is a system and method for estimating tidal chest volume using 3D surface reconstruction based on an analysis of captured reflections of structured illumination patterns from the subject with a video camera. The imaging system hereof captures the reflection of the light patterns from a target area of the subject's thoracic region. The captured information produces a depth map and a volume is estimated from the resulting 3D map. The teachings hereof provide a non-contact approach to patient respiration monitoring that is particularly useful for infant care in a neo-natal intensive care unit (NICU), and can aid in the early detection of sudden deterioration of physiological condition due to detectable changes in respiratory function. The systems and methods disclosed herein provide an effective tool for tidal chest volume study and respiratory function analysis.

摘要翻译： 所公开的是基于使用摄像机对来自被摄体的结构化照明图案的捕获反射的分析来使用3D表面重建来估计潮汐胸部体积的系统和方法。 其成像系统捕获来自受试者胸部区域的目标区域的光图案的反射。 捕获的信息产生一个深度图，并且从所得到的3D地图估计出一个体积。 本发明的教导提供了对新生儿重症监护病房（NICU）中的婴儿护理特别有用的患者呼吸监测的非接触方法，并且可以有助于早期发现由于可检测的变化引起的生理状态突然恶化 呼吸功能。 本文公开的系统和方法为潮汐胸部体积研究和呼吸功能分析提供了有效的工具。

公开(公告)号：US08509495B2

公开(公告)日：2013-08-13

申请号：US13087850

申请日：2011-04-15

申请人： Beilei Xu ,  Lalit Keshav Mestha

发明人： Beilei Xu ,  Lalit Keshav Mestha

IPC分类号： G06K9/00

CPC分类号： G06K9/00013 ,  G06K9/2036 ,  G06K2009/00932

摘要： What is disclosed is a novel system and method for identifying an individual in an IR image involves the following. Intensity values are collected at N wavelengths for each pixel in an IR video-based image. The intensity values are collected using an IR imaging system having an IR detector and an IR Illuminator. The intensity values are then used to identify pixels of human skin in the IR image. If human skin is identified in the IR image then, the human hand is identified in the IR image from the human skin to distinguish the hand from the background. Vein patterns in the hand are then located and extracted. A reference vein pattern is retrieved from a database of known vein patterns for individuals, and a comparison is made to determine a match. If a match is determined, then the individual in the captured IR image can be identified.

摘要翻译： 所公开的是用于识别IR图像中的个体的新颖系统和方法涉及以下。 在基于IR视频的图像中针对每个像素在N个波长处收集强度值。 使用具有IR检测器和IR照明器的IR成像系统收集强度值。 然后强度值用于识别IR图像中人体皮肤的像素。 如果在IR图像中识别出人类皮肤，则人类的手在来自人体皮肤的IR图像中被识别，以将手与背景区分开。 然后定位和提取手中的静脉图案。 从个人的已知静脉图案的数据库检索参考静脉图案，并进行比较以确定匹配。 如果确定匹配，则可以识别捕获的IR图像中的个体。

公开(公告)号：US20130148172A1

公开(公告)日：2013-06-13

申请号：US13313533

申请日：2011-12-07

申请人： Robert Herloski ,  Jack Lestrange ,  Timothy Clark ,  Jess Gentner ,  Edward W. Smith, JR. ,  Howard Mizes ,  Robert P. Loce ,  Beilei Xu ,  Joseph C. Sheflin

发明人： Robert Herloski ,  Jack Lestrange ,  Timothy Clark ,  Jess Gentner ,  Edward W. Smith, JR. ,  Howard Mizes ,  Robert P. Loce ,  Beilei Xu ,  Joseph C. Sheflin

IPC分类号： H04N1/04

CPC分类号： H04N1/40025 ,  H04N1/1135 ,  H04N1/12

摘要： Raster Output Scanners and printing systems are presented along with methods for mitigating banding in printing systems, in which electronic banding compensation is employed using cross-process direction light source intensity banding correction profiles tailored to corresponding reflective facets of a rotating polygon.

摘要翻译： 光栅输出扫描仪和打印系统以及用于减轻打印系统中的条带的方法，其中采用电子带状补偿，使用针对旋转多边形的相应反射面定制的交叉过程方向光源强度条带校正轮廓。

公开(公告)号：US08451504B2

公开(公告)日：2013-05-28

申请号：US12552519

申请日：2009-09-02

申请人： Beilei Xu ,  Wencheng Wu

发明人： Beilei Xu ,  Wencheng Wu

IPC分类号： H04N1/40

CPC分类号： G06K9/036

摘要： What is disclosed is a novel system and method for banding defect detection and analysis in digital imaging systems. The present method utilizes the gray levels of image regions and a collection of sequence of user images to improve the banding analysis. One embodiment hereof includes: segmenting images into regions; determining banding information for each page over a given sequence of images and detecting problem banding defect frequencies; estimating the banding amplitude(s) and average gray levels for each segmented region for each identified banding frequency(ies); and determining, through a process of interpolation, the banding amplitude for the image or sequence of images based on the banding amplitude and average gray levels of each region. Thereafter, notification can be provided to a key operator when the amplitude(s) are expected to exceed pre-determined levels over the course of a production run. The method demonstrates advantages in banding detection over whole-page methods.

摘要翻译： 公开的是用于在数字成像系统中条带缺陷检测和分析的新型系统和方法。 本方法利用图像区域的灰度级和用户图像序列的集合来改进条带分析。 其一个实施例包括：将图像分割成区域; 在给定的图像序列上确定每个页面的条带信息并检测问题带状缺陷频率; 为每个识别的条带频率估计每个分段区域的条带幅度和平均灰度级; 以及基于每个区域的条带幅度和平均灰度级，通过插值过程确定图像或图像序列的条带幅度。 此后，当在生产运行过程中预期振幅超过预定水平时，可向密钥操作者提供通知。 该方法显示了整页检索方法的优势。

公开(公告)号：US08451500B2

公开(公告)日：2013-05-28

申请号：US12966164

申请日：2010-12-13

申请人： Beilei Xu ,  Joseph C Sheflin ,  Jack T LeStrange ,  Robert P Loce ,  Shen-Ge Wang

发明人： Beilei Xu ,  Joseph C Sheflin ,  Jack T LeStrange ,  Robert P Loce ,  Shen-Ge Wang

IPC分类号： H04N1/405 ,  G03F3/08 ,  G06K9/00

CPC分类号： H04N1/32219 ,  H04N1/32256

摘要： Provided are methods, apparatus and systems related to watermark encoding via pixel spacing modulation. According to one exemplary embodiment, a method modulates the pixel spacing associated with an image to encode a watermark.

摘要翻译： 提供了通过像素间隔调制与水印编码相关的方法，装置和系统。 根据一个示例性实施例，一种方法调制与图像相关联的像素间隔以编码水印。