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1. 发明授权

US09301710B2 Processing a video for respiration rate estimation 有权
标题翻译：处理用于呼吸速率估计的视频
公开(公告)号：US09301710B2
公开(公告)日：2016-04-05
申请号：US13529648
申请日：2012-06-21
申请人： Lalit Keshav Mestha , Edgar A. Bernal , Beilei Xu
发明人： Lalit Keshav Mestha , Edgar A. Bernal , Beilei Xu
IPC分类号： A61B5/05 , A61B5/107 , A61B5/00 , A61B5/08 , A61B5/11 , A61B5/113 , G01B11/25 , G06T7/00 , G06T7/20 , G06K9/00
CPC分类号： A61B5/1077 , A61B5/0064 , A61B5/0816 , A61B5/1128 , A61B5/1135 , G01B11/2527 , G06K9/0053 , G06T7/262 , G06T7/521 , G06T2207/10016 , G06T2207/10024 , G06T2207/10048 , G06T2207/10152 , G06T2207/20044 , G06T2207/20056 , G06T2207/30076 , G09G2380/08
摘要： What is disclosed is a system and method for estimating a respiration rate by analyzing distortions in reflections of structured illumination patterns captured in a video containing a view of a subject's thoracic region. In one embodiment, a video of a target region of a body of a subject of interest is received. Video image frames are processed to estimate 3D time-series data for the target region. As more fully disclosed herein, the subject's respiration rate is estimated from the 3D time-series data. Measurements can be acquired under a diverse set of lighting conditions. The teachings hereof provide a non-contact approach to patient respiratory function monitoring that is useful for intensive care units and for monitoring at homes, and which aid in the detection of sudden deterioration of physiological conditions due to changes in respiration rates. The teachings hereof provide an effective tool for non-contact respiratory function study and analysis.
摘要翻译：公开的是通过分析在包含受试者胸部区域的视图中捕获的结构化照明模式的反射中的失真来估计呼吸率的系统和方法。在一个实施例中，接收感兴趣对象的身体的目标区域的视频。处理视频图像帧以估计目标区域的3D时间序列数据。如本文更全面地公开的，从3D时间序列数据估计对象的呼吸速率。可以在多种照明条件下获得测量。本文的教导为患者呼吸功能监测提供了非接触的方法，该方法对于重症监护病房有用，并且在家中进行监测，并且有助于检测呼吸速率变化引起的生理状况突然恶化。本文的教导为非接触式呼吸功能研究和分析提供了有效的工具。

2. 发明授权

US09155475B2 Enabling hybrid video capture of a scene illuminated with unstructured and structured illumination sources 有权
标题翻译：启用使用非结构化和结构化照明光源照明的场景的混合视频捕获
公开(公告)号：US09155475B2
公开(公告)日：2015-10-13
申请号：US13533605
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： H04N5/232 , A61B5/00 , H04N5/225 , H04N5/235
CPC分类号： A61B5/0077 , A61B5/0035 , A61B5/0073 , H04N5/2256 , H04N5/23296 , H04N5/2354
摘要： What is disclosed is a system and method for enabling hybrid video capture of a scene being illuminated with structured and unstructured illumination sources over a wavelength range of interest that significantly intersects with each other. In one embodiment, the present system comprises a video capture device for capturing video of a scene being actively illuminated by both a structured and unstructured illumination source; a controller for controlling a manipulation of at least one structured and at least one unstructured illumination sources during capture of the video by the video capture device; and a processor in communication with the controller, the processor executing machine readable program instructions effectuating the manipulation. Various embodiments are disclosed.
摘要翻译：所公开的是一种系统和方法，用于实现在结构化和非结构化照明源上照射的场景的混合视频捕获，所述结构化和非结构化照明源在相互显着相交的感兴趣的波长范围内。在一个实施例中，本系统包括用于捕获被结构化和非结构化照明源主动照亮的场景的视频的视频捕获设备; 控制器，用于在由所述视频捕捉设备拍摄所述视频期间控制对至少一个结构化和至少一个非结构化照明源的操纵; 以及与所述控制器通信的处理器，所述处理器执行执行所述操作的机器可读程序指令。公开了各种实施例。

3. 发明授权

US09226691B2 Processing a video for tidal chest volume estimation 有权
标题翻译：处理潮汐胸部体积估计的视频
公开(公告)号：US09226691B2
公开(公告)日：2016-01-05
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 , A61B5/00 , A61B5/107 , A61B5/11 , A61B5/113 , G01B11/25
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。

4. 发明授权

US09141868B2 Contemporaneously reconstructing images captured of a scene illuminated with unstructured and structured illumination sources 有权
标题翻译：同时重建用非结构化和结构化照明光源照亮的场景拍摄的图像
公开(公告)号：US09141868B2
公开(公告)日：2015-09-22
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： G06K9/00 , G06K9/36 , G06T7/00 , G01B11/25
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。

5. 发明授权

US08971985B2 Minute ventilation estimation based on depth maps 有权
标题翻译：基于深度图的分钟通气估计
公开(公告)号：US08971985B2
公开(公告)日：2015-03-03
申请号：US13486682
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： A61B5/05 , G06F19/00 , H04N7/18 , A61B5/091 , A61B5/11 , A61B5/113 , G06T7/00
CPC分类号： G06F19/3418 , A61B5/091 , A61B5/1128 , A61B5/1135 , G06F19/00 , G06T7/521 , G06T2207/10152 , G06T2207/30004 , G06T2207/30076 , H04N7/181
摘要： What is disclosed is a system and method for estimating minute ventilation by analyzing distortions in reflections of structured illumination patterns captured in a video of a thoracic region of a subject of interest being monitored for respiratory function. Measurement readings can be acquired in a few seconds under a diverse set of lighting conditions and provide a non-contact approach to patient respiratory function that is particularly useful for infant care in an intensive care unit (ICU), sleep studies, and can aid in the early detection of sudden deterioration of physiological conditions due to detectable changes in chest volume. The systems and methods disclosed herein provide an effective tool for non-contact minute ventilation estimation and respiratory function analysis.
摘要翻译：所公开的是通过分析被监测用于呼吸功能的感兴趣受试者的胸部区域的视频中捕获的结构化照明模式的反射中的失真来估计每分钟通气的系统和方法。测量读数可以在多种照明条件下几秒钟内获得，并提供对患者呼吸功能的非接触式方法，对重症监护室（ICU），睡眠研究中的婴儿护理特别有用，并且可以帮助早期发现由于胸部体积可检测到的生理状况突然恶化。本文公开的系统和方法提供了用于非接触式分钟通气估计和呼吸功能分析的有效工具。

6. 发明授权

US08897522B2 Processing a video for vascular pattern detection and cardiac function analysis 有权
标题翻译：处理血管图案检测和心脏功能分析的视频
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。

7. 发明授权

US08977347B2 Video-based estimation of heart rate variability 有权
标题翻译：基于视频的心率变异性估计
公开(公告)号：US08977347B2
公开(公告)日：2015-03-10
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
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。

8. 发明授权

US08855384B2 Continuous cardiac pulse rate estimation from multi-channel source video data 有权
标题翻译：来自多通道源视频数据的连续心脏脉搏率估计
公开(公告)号：US08855384B2
公开(公告)日：2014-10-07
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： G06K9/00
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 received. A sliding window is used to define overlapping segments of the time-series signal. Signal segments are processed by performing constrained independent component analysis (cICA) until convergence to obtain an estimated source signal. A frequency of each estimated source signal obtained by the cICA at convergence is determined to be the subject's estimated cardiac pulse rate for each signal segment. A seed reference signal used by the cICA is repeatedly updated. A sliding window is shifted to define a next time-series signal segment for processing. The method repeats for each signal segment until a termination criteria is met. In such a manner, the subject's cardiac pulse rate is estimated from a video of the subject 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，接收时间序列信号。滑动窗口用于定义时间序列信号的重叠段。通过执行受约束的独立分量分析（cICA）直到收敛以获得估计的源信号来处理信号段。将通过cICA在会聚处获得的每个估计的源信号的频率确定为每个信号段的被摄体估计的心脏脉搏率。 cICA使用的种子参考信号被重复更新。移动滑动窗口以定义下一个时间序列信号段进行处理。该方法对于每个信号段重复，直到满足终止标准。以这种方式，从受试者的视频连续地估计受试者的心脏脉搏率。

9. 发明授权

US09171196B2 Multi-band infrared camera system optimized for skin detection 有权
标题翻译：针对皮肤检测优化的多波段红外相机系统
公开(公告)号：US09171196B2
公开(公告)日：2015-10-27
申请号：US13416436
申请日：2012-03-09
申请人： Yao Rong Wang , Lalit Keshav Mestha , Beilei Xu , Raja Bala , Graham Pennington
发明人： Yao Rong Wang , Lalit Keshav Mestha , Beilei Xu , Raja Bala , Graham Pennington
IPC分类号： H04N7/18 , G06K9/00 , H04N5/33 , G06K9/20
CPC分类号： G06K9/00255 , G06K9/00838 , G06K9/2018 , H04N5/33
摘要： What is disclosed is a system and method for selecting the optimal wavelength ban combination for a multi-band infrared camera system which is optimized for skin detection. An objective function is constructed specifically for this application from classified performance and the algorithm generates wavelengths by maximizing the objective function. A specific wavelength band combination is selected which maximizes the objective function. Also disclosed is a 3-band and 4-band camera system with filters each having a transmittance of one of a combination of wavelength bands optimized to detect skin in the infrared band. The camera systems disclosed herein find their intended uses in a wide array of vehicle occupancy detection systems and applications. Various embodiments are disclosed.
摘要翻译：公开的是用于为针对皮肤检测而优化的多频带红外相机系统选择最佳波长禁止组合的系统和方法。目标函数由分类性能专门为此应用构建，算法通过最大化目标函数生成波长。选择使目标函数最大化的特定波段组合。还公开了一种具有滤波器的三频带和四频带相机系统，每个滤波器具有被优化以检测红外频带中的皮肤的波长带的组合之一的透射率。本文公开的相机系统在各种车辆占用检测系统和应用中找到其预期用途。公开了各种实施例。

10. 发明授权

US09025024B2 System and method for object identification and tracking 有权
标题翻译：用于物体识别和跟踪的系统和方法
公开(公告)号：US09025024B2
公开(公告)日：2015-05-05
申请号：US13247343
申请日：2011-09-28
申请人： Beilei Xu , Wencheng Wu , Lalit Keshav Mestha , Graham Pennington
发明人： Beilei Xu , Wencheng Wu , Lalit Keshav Mestha , Graham Pennington
IPC分类号： H04N7/18 , G06K9/20 , H04N5/232 , H04N5/33
CPC分类号： G06K9/2018 , H04N5/23206 , H04N5/23219 , H04N5/332
摘要： What is disclosed is a system and method for identifying materials comprising an object captured in a video and for using the identified materials to track that object as it moves across the captured video scene. In one embodiment, a multi-spectral or hyper-spectral sensor is used to capture a spectral image of an object in an area of interest. Pixels in the spectral planes of the spectral images are analyzed to identify a material comprising objects in that area of interest. A location of each of the identified objects is provided to an imaging sensor which then proceeds to track the objects as they move through a scene. Various embodiments are disclosed.
摘要翻译：公开的是用于识别包括在视频中捕获的对象的材料的系统和方法，并且用于当所述对象在所捕获的视频场景中移动时使用所识别的材料来跟踪该对象。在一个实施例中，使用多光谱或超光谱传感器来捕获感兴趣区域中的对象的光谱图像。分析光谱图像的光谱平面中的像素以识别包含该感兴趣区域中的物体的材料。每个识别的对象的位置被提供给成像传感器，然后成像传感器在它们移动通过场景时跟踪对象。公开了各种实施例。

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