公开(公告)号：US20150196269A1

公开(公告)日：2015-07-16

申请号：US14156108

申请日：2014-01-15

Applicant: Xerox Corporation

Inventor： Vaibhav RAJAN ,  Om Dadaji DESHMUKH ,  Lalit Keshav MESTHA ,  Leslie Edward S. ,  Survi KYAL ,  Beilei XU ,  Nischal Murthy PIRATLA

IPC: A61B7/00 ,  A61B7/04

CPC classification number: A61B7/003 ,  A61B5/0823 ,  A61B7/04

Abstract: What is disclosed is a system and method for determining whether a patient has an acute respiratory infection. In one embodiment, the present method involves using a handheld device to acquire an audio signal of a sound made by a patient coughing. The audio signal is then communicated, by the handheld device, to a remote computing device. Upon receiving the audio signals, signal are repeatedly retrieved from a database of signals associated with different severities of various acute respiratory conditions. A comparison is made between the received audio signal and the retrieved signals. As a result of the comparison, a determination is made whether the patient has an acute respiratory infection. An audio playback device may be employed for playing the audio signal so that a medical professional can listen to that audio signal and facilitate the determination. Various embodiments are disclosed.

Abstract translation: 公开的是用于确定患者是否具有急性呼吸道感染的系统和方法。 在一个实施例中，本方法涉及使用手持设备来获取由患者咳嗽产生的声音的音频信号。 然后，音频信号由手持设备传送到远程计算设备。 在接收到音频信号时，从与各种急性呼吸状况的不同严重程度相关联的信号的数据库重复地检索信号。 在接收到的音频信号和检索到的信号之间进行比较。 作为比较的结果，确定患者是否具有急性呼吸道感染。 可以使用音频播放装置来播放音频信号，使得医疗专业人员可以收听该音频信号并便于确定。 公开了各种实施例。

公开(公告)号：US20150157270A1

公开(公告)日：2015-06-11

申请号：US14099358

申请日：2013-12-06

Applicant: Xerox Corporation

Inventor： Survi KYAL ,  Lalit Keshav MESTHA

IPC: A61B5/00 ,  A61B5/117 ,  A61B5/091 ,  A61B5/024 ,  A61B5/08

CPC classification number: A61B5/7207 ,  A61B5/024 ,  A61B5/1128 ,  A61B5/1135 ,  A61B5/7203 ,  A61B5/7278 ,  A61B2576/00

Abstract: What is disclosed is a system and method for compensating for motion induced artifacts in physiological signals extracted from a video of a subject being monitored for a physiological function in a non-contact, remote sensing environment. The present method identifies a center frequency from a physiological signal obtained from processing a prior video segment. Since a moment to moment change in pulse frequency from one video segment to a next is not very large, signals obtained from sequential video segments can be repeatedly processed and an adaptive band-pass filter repeatedly re-configured and used to filter a next video segment, and so on. Using the teachings disclosed herein, a motion-compensated continuous cardiac signal can be obtained for the subject for continuous monitoring of the subject's cardiac function via video imaging. The teachings hereof provide an effective means for compensating for movement by the subject during video acquisition. Various embodiments are disclosed.

Abstract translation: 公开的是用于补偿从在非接触式遥感环境中对于生理功能进行监视的被摄体的视频提取的生理信号中的运动诱发伪影的系统和方法。 本方法根据从先前的视频段处理获得的生理信号来识别中心频率。 由于从一个视频段到下一个视频段的脉冲频率的瞬间变化不是非常大，可以重复处理从顺序视频段获得的信号，并且自适应带通滤波器被重新重新配置并用于过滤下一个视频段 ， 等等。 使用本文公开的教导，可以获得用于受试者的运动补偿的连续心脏信号，以经由视频成像连续监测受试者的心脏功能。 本发明的教导提供了一种在视频采集期间补偿受试者的运动的有效手段。 公开了各种实施例。

公开(公告)号：US20140323888A1

公开(公告)日：2014-10-30

申请号：US13871766

申请日：2013-04-26

Applicant: XEROX CORPORATION

Inventor： Survi KYAL ,  Lalit Keshav MESTHA ,  Beilei XU

IPC: A61B5/024 ,  G06T7/00

CPC classification number: A61B5/02405 ,  A61B5/021 ,  A61B5/02416 ,  A61B5/02444 ,  A61B5/0295 ,  A61B5/7225

Abstract: What is disclosed is a system and method for extracting photoplethysmographic (PPG) signal (i.e., a cardiac signal) on a continuous basis from a time-series signals obtained from video images captured of a subject being monitored for cardiac function in a non-contact remote sensing environment involves the following. First, a time-series signal obtained from video images captured of a region of exposed skin where a photoplethysmographic (PPG) signal of a subject of interest can be registered. A sliding window is then used to define consecutive sequential segments of the time-series signal for processing. Each of the consecutive time-series signal segments is detrended such that low frequency variations and non-stationary components are removed. The detrended signals are processed to obtain, for each segment, a PPG signal. The PPG signal segments are then stitched together using a stitching method, as disclosed herein, to obtain a continuous PPG signal for the subject.

Abstract translation: 公开的是一种系统和方法，用于连续地从从非接触的心脏功能监测对象被摄取的视频图像获得的时间序列信号中连续提取光电体积描记（即心脏信号） 遥感环境涉及以下几个方面。 首先，可以登记拍摄感兴趣对象的光电体描记（PPG）信号的暴露皮肤区域的视频图像获得的时间序列信号。 然后使用滑动窗口来定义用于处理的时间序列信号的连续的顺序段。 每个连续的时间序列信号段被去除，使得低频变化和非固定分量被去除。 处理去信号的信号，以获得每个段的PPG信号。 然后如本文所公开的，使用缝合方法将PPG信号段缝合在一起，以获得该对象的连续PPG信号。