公开(公告)号：US20150286779A1

公开(公告)日：2015-10-08

申请号：US14245353

申请日：2014-04-04

Applicant: Xerox Corporation

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

IPC: G06F19/00 ,  G11B27/036 ,  H04N5/265 ,  H04N19/46

CPC classification number: H04N5/265 ,  G11B27/036 ,  G16H10/60 ,  G16H40/63 ,  H04N19/46 ,  H04N19/467

Abstract: What is disclosed is a system and method for embedding a time-varying physiological signal corresponding to a physiological function of a subject into a video. In one embodiment, a video of a subject is received along with a time-varying signal corresponding to a physiological function of the subject. A representative image is obtained from the video. The received time-varying signal is divided into a plurality of signal segments. The obtained image is repeatedly replicated to generate a video sequence. The signal segments are encoded in the images comprising the generated video sequence. The video sequence containing the encoded physiological signal is then compressed using a video compression technique.

Abstract translation: 所公开的是将对应于受试者的生理功能的时变生理信号嵌入到视频中的系统和方法。 在一个实施例中，被摄体的视频与对应于对象的生理功能的时变信号一起被接收。 从视频获得代表性的图像。 所接收的时变信号被分成多个信号段。 所获得的图像被重复地复制以产生视频序列。 信号段被编码在包括所生成的视频序列的图像中。 然后使用视频压缩技术来压缩包含经编码的生理信号的视频序列。

公开(公告)号：US20150094606A1

公开(公告)日：2015-04-02

申请号：US14044043

申请日：2013-10-02

Applicant: Xerox Corporation

Inventor： Lalit Keshav MESTHA ,  Eribaweimon SHILLA ,  Edgar A. BERNAL ,  Graham S. PENNINGTON ,  Himanshu J. MADHU

IPC: A61B5/11 ,  A61B5/00 ,  A61B5/113

CPC classification number: A61B5/4818 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0075 ,  A61B5/0077 ,  A61B5/1073 ,  A61B5/1128 ,  A61B5/113 ,  A61B5/6898 ,  A61B5/7203 ,  A61B5/7246 ,  A61B5/7264 ,  A61B5/7282 ,  A61B5/742 ,  A61B5/746 ,  A61B5/747 ,  A61B2576/00

Abstract: What is disclosed is a system and method for identifying a patient's breathing pattern for respiratory function assessment without contact and with a depth-capable imaging system. In one embodiment, a time-varying sequence of depth maps are received of a target region of a subject of interest over a period of inspiration and expiration. Once received, the depth maps are processed to obtain a breathing signal for the subject. The subject's breathing signal comprises a temporal sequence of instantaneous volumes. One or more segments of the subject's breathing signal are then compared against one or more reference breathing signals each associated with a known pattern of breathing. As a result of the comparison, a breathing pattern for the subject is identified. The identified breathing pattern is then used to assess the subject's respiratory function. The teachings hereof find their uses in an array of diverse medical applications. Various embodiments are disclosed.

公开(公告)号：US20150073281A1

公开(公告)日：2015-03-12

申请号：US14023654

申请日：2013-09-11

Applicant: XEROX CORPORATION

Inventor： Lalit Keshav MESTHA ,  Eribaweimon SHILLA ,  Edgar A. BERNAL ,  Himanshu J. MADHU

IPC: A61B5/087 ,  A61B5/08

CPC classification number: A61B5/0806 ,  A61B5/0077 ,  A61B5/087 ,  A61B5/091 ,  A61B5/1127 ,  A61B5/7239

Abstract: What is disclosed is a system and method for generating a flow-volume loop for respiratory function assessment of a subject of interest in a non-contact, remote sensing environment. In one embodiment, a time-varying sequence of depth maps of a target region of a subject of interest being monitored for respiratory function is received. The depth maps are of that target region over a period of inspiration and expiration. The depth maps are processed to obtain a volume signal comprising a temporal sequence of instantaneous volumes. The time-varying volume signal is processed to obtain a flow-volume loop. Changes in a contour of the flow-volume loop are used to assess the subject's respiratory function. The teachings hereof find their uses in a wide array of medical applications where it is desired to monitor respiratory function of patients such as elderly patients, chronically ill patients with respiratory diseases and premature babies.

Abstract translation: 公开的是用于在非接触式遥感环境中产生感兴趣对象的呼吸功能评估的流量回路的系统和方法。 在一个实施例中，接收针对呼吸功能监视的感兴趣对象的目标区域的深度图的时变序列。 深度图是在灵感和期满期间的目标区域。 处理深度图以获得包括瞬时体积的时间序列的体积信号。 处理时变音量信号以获得流量环路。 流量循环轮廓的变化用于评估受试者的呼吸功能。 这些教导在各种医疗应用中发现其用途，其中希望监测患者的呼吸功能，例如老年患者，长期患有呼吸系统疾病的患者和早产儿。

公开(公告)号：US20150051461A1

公开(公告)日：2015-02-19

申请号：US13968794

申请日：2013-08-16

Applicant: Xerox Corporation

Inventor： Edul N. DALAL ,  Wencheng WU ,  Lalit Keshav MESTHA

IPC: A61B5/024 ,  A61B5/01 ,  A61B5/1455 ,  A61B5/00

CPC classification number: A61B5/02433 ,  A61B5/0064 ,  A61B5/0077 ,  A61B5/01 ,  A61B5/02427 ,  A61B5/1176 ,  A61B5/1455 ,  A61B5/14552 ,  A61B5/441

Abstract: What is disclosed is a system and method for performing a medical diagnosis for a subject of interest using a RGB video camera and a spot radiometer in a non-contact, remote sensing environment. In one embodiment, video images are captured using a RGB video camera in real-time of a subject of interest for medical diagnostic purposes. The video images are analyzed to identify a region of exposed skin for which measurements are desired to be obtained. A relative position of a spot radiometer is then adjusted such that the spot radiometer can measure incident radiation at a desired wavelength range from the identified region of exposed skin. The measurements are then used to perform a medical diagnosis for the subject. Various embodiments are disclosed.

Abstract translation: 公开的是用于在非接触式遥感环境中使用RGB摄像机和点辐射计对感兴趣对象进行医学诊断的系统和方法。 在一个实施例中，为了医疗诊断目的，利用RGB摄像机实时拍摄感兴趣的对象的视频图像。 分析视频图像以识别期望获得测量的暴露皮肤的区域。 然后调整点辐射计的相对位置，使得点辐射计可以从所识别的暴露皮肤区域测量在期望波长范围内的入射辐射。 然后测量用于对受试者执行医学诊断。 公开了各种实施例。

公开(公告)号：US20150018654A1

公开(公告)日：2015-01-15

申请号：US13937949

申请日：2013-07-09

Applicant: Xerox Corporation

Inventor： Lalit Keshav MESTHA ,  Barry P. MANDEL ,  Peter Johan NYSTROM

IPC: A61B5/1455 ,  A61B5/145 ,  A61B5/00

CPC classification number: A61B5/14551 ,  A61B5/0022 ,  A61B5/14546 ,  A61B5/6831 ,  A61B5/7282 ,  A61B5/742

Abstract: What is disclosed is a system and method for monitoring a subject of interest for fractional blood oxygen saturation using an apparatus that can be comfortably worn by the subject around an area of exposed skin where a photoplethysmographic (PPG) signal can be registered. In one embodiment, the apparatus is a reflective or transmissive wrist-worn device with emitter/detector pairs fixed to an inner side of a band with at least three illuminators, each emitting source light at a different wavelength band. Each photodetector comprises sensors that are sensitive to a wavelength band of a respective illuminator. Each photodetector measures an intensity of sensed light emitted by a respective illuminator. The signal obtained by the sensors comprises a continuous PPG signal. The continuous PPG signal analyzed for fractional blood oxygen saturation levels and communicated to a remote device. Various embodiments are disclosed.

Abstract translation: 所公开的是使用可以被注册在光体积描记术（PPM）信号的暴露皮肤区域周围的受试者舒适佩戴的装置来监测分数血氧饱和度的感兴趣的受试者的系统和方法。 在一个实施例中，该装置是具有发射器/检测器对的反射或透射腕部装置，其具有固定到具有至少三个照明器的带的内侧，每个照射器发射不同波长带的光源。 每个光电检测器包括对相应照明器的波长带敏感的传感器。 每个光电检测器测量由相应照明器发射的感测光的强度。 由传感器获得的信号包括连续的PPG信号。 连续的PPG信号分析了血氧饱和度的分数，并传达给远程设备。 公开了各种实施例。

公开(公告)号：US20140240511A1

公开(公告)日：2014-08-28

申请号：US13775665

申请日：2013-02-25

Applicant: XEROX CORPORATION

Inventor： Peter Johan NYSTROM ,  Lalit Keshav MESTHA

IPC: H04N5/232

CPC classification number: H04N5/33 ,  H04N5/23212

Abstract: What is disclosed is a system and method for focusing a camera on an object of interest in a scene. In one embodiment, an illuminator comprising a light source which emits light at a desired wavelength band is aimed at an object in a scene. The source light beam impacts the object at an aim point. A spectral sensing device senses a reflection of the projected light beam off the object. In response to the reflected light beam having been detected by the spectral sensing device, a location of the object in the scene is determined and communicated to a video acquisition system. A focus of the video system is changed so that the object is brought into the camera's field of view. The object can be tracked as it moves about the scene. A spectral image of the object can be captured and analyzed for the object's material composition.

Abstract translation: 公开的是用于将相机聚焦在场景中感兴趣的对象上的系统和方法。 在一个实施例中，包括以期望波长带发光的光源的照明器瞄准场景中的物体。 源光束在目标点处撞击物体。 光谱感测装置感测投影光束离开物体的反射。 响应于由光谱感测装置检测到的反射光束，确定场景中物体的位置并将其传送到视频采集系统。 改变视频系统的焦点，使对象进入摄像机的视野。 当物体在场景附近移动时，可以跟踪对象。 物体的光谱图像可以被捕获并分析对象的材质组成。

公开(公告)号：US20140168421A1

公开(公告)日：2014-06-19

申请号：US13715446

申请日：2012-12-14

Applicant: XEROX CORPORATION

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

IPC: G01N21/01

CPC classification number: G01J3/2823 ,  G01J3/36 ,  G01J3/51 ,  G01J3/513 ,  G06K9/00369 ,  G06K9/00785 ,  G06K9/2018 ,  H04N5/332 ,  H04N9/07

Abstract: What is disclosed is a system and method for processing image data acquired using a multi-band infrared camera system with a spectral mosaic filter arranged in a geometric pattern without having to perform a demosaicing that is typical with processing data from an array of sensors. In one embodiment, image data that has been captured using a camera system that has a spectral filter mosaic comprising a plurality of spectral filters arrayed on a grid. A material index is determined, using intensity values collected by sensor elements associated with this cell's respective spectral filters. All of the material indices collectively generate a material index image. Thereafter, material identification is performed on the material index image using, for example, pixel classification. Because the demosaicing step can be effectively avoided, image processing time is reduced. The teachings hereof find their uses in a wide array of applications including automated HOV/HOT violation detection.

Abstract translation: 所公开的是一种用于处理使用具有以几何图案排列的频谱马赛克滤波器的多频带红外相机系统获取的图像数据的系统和方法，而不必执行典型的来自传感器阵列的数据处理的去马赛克。 在一个实施例中，已经使用具有包括排列在网格上的多个频谱滤波器的频谱滤波器马赛克的相机系统捕获的图像数据。 使用与该单元相应的光谱滤波器相关联的传感器元件收集的强度值来确定材料索引。 所有材料指标共同生成材料索引图像。 此后，使用例如像素分类对材料索引图像进行材料识别。 因为可以有效地避免去马赛克步骤，所以减少了图像处理时间。 其教导在各种应用中发现其用途，包括自动HOV / HOT违规检测。