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31. 发明申请

US20140301597A1 WINDSHIELD LOCALIZATION FOR OCCUPANCY DETECTION 有权
标题翻译：用于家庭检测的WINDSHIELD本地化
公开(公告)号：US20140301597A1
公开(公告)日：2014-10-09
申请号：US13859047
申请日：2013-04-09
申请人： XEROX CORPORATION
发明人： Beilei Xu , Peter Paul
IPC分类号： G06K9/00
CPC分类号： G06K9/00832 , G06K9/00785
摘要： A system and method to capture an image of an oncoming target vehicle and localize the windshield of the target vehicle. Upon capturing an image, it is then analyzed to detect certain features of the target vehicle. Based on geometrical relationships of the detected features, the area of the image containing the windshield of the vehicle can then be identified and localized for downstream processing.
摘要翻译：捕获迎面而来的目标车辆的图像并定位目标车辆的挡风玻璃的系统和方法。在捕获图像时，然后对其进行分析以检测目标车辆的某些特征。基于检测到的特征的几何关系，可以识别包含车辆挡风玻璃的图像的区域，以便进行下游处理。

32. 发明申请

US20170243057A1 SYSTEM AND METHOD FOR AUTOMATIC GAIT CYCLE SEGMENTATION 有权
公开(公告)号：US20170243057A1
公开(公告)日：2017-08-24
申请号：US15283663
申请日：2016-10-03
申请人： Xerox Corporation
发明人： Hao Wu , Beilei Xu , Wencheng Wu , Robert P. Loce
IPC分类号： G06K9/00 , G06T7/20 , G06T7/00
CPC分类号： G06K9/00348 , A61B5/112 , A61B5/1128 , A61B5/117 , A61B5/7235 , A61B5/7275 , G06K9/00342 , G06K9/00362 , G06K9/00885 , G06K9/4604 , G06K9/6202 , G06T7/11 , G06T7/20 , G06T7/246 , G06T7/285 , G06T2207/10004 , G06T2207/20164 , G06T2207/30196
摘要： A computer-implemented system and method for gait analysis of a subject. The method includes obtaining visual data from an image capture device positioned in front of or behind the subject, the plurality of image frames capturing at least one gait cycle of the gait of the subject, detecting one or more prescribed features within the plurality of image frames, analyzing each of the plurality of image frames to detect cross-frame stability of the one or more prescribed features, and segmenting the gait of the subject into at least one gait cycle based at least in part on the detected cross-frame stability of the one or more prescribed features.

33. 发明授权

US09687189B2 Automatic visual remote assessment of movement symptoms in people with parkinson's disease for MDS-UPDRS finger tapping task 有权
公开(公告)号：US09687189B2
公开(公告)日：2017-06-27
申请号：US14707153
申请日：2015-05-08
申请人： Xerox Corporation
发明人： Faezeh Tafazzoli , Beilei Xu , Hao Wu , Robert P Loce
IPC分类号： A61B5/00 , A61B5/11 , G06K9/00 , G06K9/32
CPC分类号： A61B5/4082 , A61B5/1128 , A61B5/7264 , G06F19/00 , G06K9/00355 , G06K9/00744 , G06K9/3233
摘要： A system and method for assessing patient movement for Parkinson's disease includes capturing a video of a subject performing a finger tapping sequence comprising a predetermined number of open and close periods. According to an exemplary embodiment, a system and method includes extracting a region of interest for each frame of the video and generating a projection of the region of interest for each frame of the video using perpendicular vector projections in a direction or plurality of directions.

34. 发明授权

US09662022B2 Continuous cardiac signal generation from a video of a subject being monitored for cardiac function 有权
公开(公告)号：US09662022B2
公开(公告)日：2017-05-30
申请号：US13871766
申请日：2013-04-26
申请人： Xerox Corporation
发明人： Survi Kyal , Lalit Keshav Mestha , Beilei Xu
IPC分类号： A61B5/024 , A61B5/00 , A61B5/021 , A61B5/0295
CPC分类号： A61B5/02405 , A61B5/021 , A61B5/02416 , A61B5/02444 , A61B5/0295 , A61B5/7225
摘要： 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.

35. 发明授权

US09443289B2 Compensating for motion induced artifacts in a physiological signal extracted from multiple videos 有权
标题翻译：补偿从多个视频中提取的生理信号中的运动诱发伪像
公开(公告)号：US09443289B2
公开(公告)日：2016-09-13
申请号：US13923612
申请日：2013-06-21
申请人： Xerox Corporation
发明人： Beilei Xu , Lalit Keshav Mestha , Survi Kyal , Himanshu J. Madhu
IPC分类号： G06K9/00 , G06T5/00 , G06T5/50 , G06T7/00
CPC分类号： G06T5/003 , G06T5/50 , G06T7/0016 , G06T2207/10016 , G06T2207/20201 , G06T2207/30088
摘要： What is disclosed is a system for compensating for motion induced artifacts in a physiological signal obtained from multiple videos of a first and second region of interest a subject being monitored for a desired physiological function. At least one of the videos being of the first region and at least one of the videos being of the second region. The first region being at least one area of exposed skin where a desired signal corresponding to the physiological function can be registered by a video imaging device. The second region being an area where a movement by the subject is likely to induce motion artifacts into the signal. The videos are processed to isolate pixels associated with the first and second regions. Processed pixels of the isolated first regions to obtain a composite time-series signal. From the composite signal, a physiological signal corresponding to the physiological function is extracted.
摘要翻译：所公开的是一种用于补偿从受感染的第一和第二感兴趣区域的多个视频获得的生理信号中的运动诱发伪影的系统，该对象被监视为期望的生理功能。至少一个视频是第一区域，并且至少一个视频是第二区域。第一区域是暴露皮肤的至少一个区域，其中对应于生理功能的期望信号可由视频成像装置登记。第二区域是被摄体的移动可能引起运动伪像进入信号的区域。处理视频以分离与第一和第二区域相关联的像素。隔离的第一区域的处理像素以获得复合时间序列信号。从复合信号中提取与生理功能对应的生理信号。

36. 发明授权

US09384396B2 System and method for detecting settle down time using computer vision techniques 有权
标题翻译：使用计算机视觉技术检测沉降时间的系统和方法
公开(公告)号：US09384396B2
公开(公告)日：2016-07-05
申请号：US14673990
申请日：2015-03-31
申请人： Xerox Corporation
发明人： Robert P. Loce , Waqas Sultani , Hao Wu , Beilei Xu , Thomas F. Wade , Mary Ann Sprague , Patricia Swenton-Wall , Megan Clar , Eric Harte
IPC分类号： G06K9/00 , G06K9/52 , G06K9/46 , G06K9/62
CPC分类号： G06K9/00624 , G06K9/00342 , G06K9/00771 , G06K9/00838 , G06K9/3233 , G06K9/46 , G06K9/4642 , G06K9/4652 , G06K9/52 , G06K9/6212 , G06K9/6215 , G06K9/6267 , G06K2009/4666
摘要： A method for detecting settle-down time in a space includes acquiring a sequence of frames capturing a select space from a first camera. The method includes determining an initial time for computing a duration it takes for an associated occupant to settle into a seat in the select space. The method includes determining one or more candidate frames from the sequence of frames where one or both of a sitting behavior and seat occupancy is observed at the seat. The method includes determining a final frame and a final time associated with the final frame from the one or more candidate frames. The method includes computing the settle-down time using the initial and the final times.
摘要翻译：用于检测空间中的稳定时间的方法包括从第一相机获取捕获选择空间的帧序列。该方法包括确定用于计算相关乘客在选择空间中的座位中所需的持续时间的初始时间。该方法包括从在座椅上观察到坐姿和座位占有率中的一个或两个的帧序列确定一个或多个候选帧。该方法包括从一个或多个候选帧确定最终帧和与最终帧相关联的最后时间。该方法包括使用初始和最终时间来计算安定时间。

37. 发明申请

US20150286883A1 ROBUST WINDSHIELD DETECTION VIA LANDMARK LOCALIZATION 有权
标题翻译：通过地标定位进行强大的风力发电检测
公开(公告)号：US20150286883A1
公开(公告)日：2015-10-08
申请号：US14245319
申请日：2014-04-04
申请人： XEROX CORPORATION
发明人： Beilei Xu , Yusuf O. Artan , Peter Paul
IPC分类号： G06K9/00 , G06K9/62 , G06T7/00 , G06K9/46
CPC分类号： G06K9/00832 , G06K9/00228 , G06K9/00785 , G06K9/00838 , G06K9/4638 , G06K9/6202 , G06K9/6206 , G06K9/6267 , G06T2207/10004 , G06T2207/20076 , G06T2207/20132 , G06T2207/30268 , G08G1/0175 , G08G1/04 , H04N5/33
摘要： A system and method that includes training a classifier using uniquely defined landmark points along the windshield region based on an elastic deformation model. The deformation model uses mixtures of trees with a shared pool of parts and can be globally optimized with dynamic programming and still capture much relevant global elastic structure. Once a candidate area is identified in the scene, a learned threshold is applied to the classification score of the candidate area to determine if the candidate area is a windshield. The identified area is then cropped out for further downstream process.
摘要翻译：一种系统和方法，其包括基于弹性变形模型沿着挡风玻璃区域使用唯一定义的地标点来训练分类器。变形模型使用树的混合物与共享的部分池，并且可以通过动态规划进行全局优化，并且仍然捕获相当大的全局弹性结构。一旦在场景中识别到候选区域，则将学习阈值应用于候选区域的分类分数，以确定候选区域是否为挡风玻璃。然后将识别的区域裁出以进一步下游处理。

38. 发明授权

US09036877B2 Continuous cardiac pulse rate estimation from multi-channel source video data with mid-point stitching 有权
标题翻译：连续心脏脉搏率估计来自多通道源视频数据与中点拼接
公开(公告)号：US09036877B2
公开(公告)日：2015-05-19
申请号：US13871728
申请日：2013-04-26
申请人： Xerox Corporation
发明人： Survi Kyal , Lalit Keshav Mestha , Beilei Xu
IPC分类号： G06K9/00 , A61B5/00 , A61B5/024
CPC分类号： A61B5/7225 , A61B5/0013 , A61B5/0077 , A61B5/02416 , A61B5/7203 , A61B5/7278 , G06F19/00 , G06K9/00496 , G06T7/0016 , G06T2207/30004 , G06T2207/30076 , G16H40/67
摘要： What is disclosed is a novel system and method for extracting photoplethysmographic (PPG) signals (i.e., cardiac signals) on a continuous basis from signals generated from video images captured of a subject being monitored for cardiac function in a non-contact remote sensing environment. In one embodiment, a time-series signal is received. The time-series signal is generated from video images captured of a region of exposed skin where a PPG signal of a subject of interest can be registered. The time-series signal is then divided into batches for processing, with successive batches having at least a 95% overlap with a previous batch. Each of the batches of time-series signals is processed to obtain a PPG signal from each batch. A mid-point of each of these PPG-signals is stitched together to obtain a continuous PPG signal for the subject. The continuous PPG signal for the subject can then viewed on a display device.
摘要翻译：所公开的是一种用于从非接触式遥感环境中心脏功能监测对象被捕获的视频图像产生的信号连续提取光电体积描记术（PPG）信号（即心脏信号）的新型系统和方法。在一个实施例中，接收时间序列信号。时间序列信号是从可以登记感兴趣对象的PPG信号的暴露皮肤区域拍摄的视频图像产生的。然后将时间序列信号分成批次进行处理，其中连续批次与先前批次具有至少95％的重叠。处理每批批次的时间序列信号以从每个批次获得PPG信号。将这些PPG信号的每一个的中点缝合在一起以获得对象的连续的PPG信号。然后可以在显示设备上观看被摄体的连续PPG信号。

39. 发明申请

US20150097952A1 DYNAMIC MULTI-WINDOWED IMAGE ENHANCEMENT FOR INTERACTIVE HOV DETECTION 有权
标题翻译：用于交互式检测的动态多窗口图像增强
公开(公告)号：US20150097952A1
公开(公告)日：2015-04-09
申请号：US14049578
申请日：2013-10-09
申请人： Xerox Corporation
发明人： Reiner Eschbach , Beilei Xu , Peter Paul
IPC分类号： G06K9/00 , H04N5/232 , H04N7/18
CPC分类号： H04N5/23229 , G06K9/00785 , G06T5/008 , G06T5/40 , H04N7/183
摘要： A system and method for enhancing images including an image capture device operably connected to a data processing device that captures an image of a target vehicle, and a processor-usable medium embodying computer code, said processor-usable medium being coupled to said data processing device, said computer program code comprising instructions executable by said processor. The instructions configured for identifying a region within the image including a window of the target vehicle, applying a first image enhancement effect to the identified region, applying a second image enhancement effect to a remainder of the image not including the identified region, the second image enhancement effect different than the first image enhancement effect.
摘要翻译：一种用于增强图像的系统和方法，包括可操作地连接到捕获目标车辆的图像的数据处理装置的图像捕获装置和体现计算机代码的处理器可用介质，所述处理器可用介质耦合到所述数据处理装置所述计算机程序代码包括可由所述处理器执行的指令。所述指令被配置用于识别包括所述目标车辆的窗口的所述图像内的区域，对所识别的区域应用第一图像增强效果，将第二图像增强效果应用于不包括所识别的区域的所述图像的其余部分，所述第二图像增强效果不同于第一图像增强效果。

40. 发明申请

US20140198947A1 Methods and Systems for Video-Based Chew Counting Via Feature Tracking 有权
标题翻译：通过特征跟踪的基于视频的咀嚼计数的方法和系统
公开(公告)号：US20140198947A1
公开(公告)日：2014-07-17
申请号：US13742658
申请日：2013-01-16
申请人： XEROX CORPORATION
发明人： Beilei Xu , Robert P. Loce , Graham Pennington
IPC分类号： G06K9/32
CPC分类号： G06K9/00261
摘要： A system and method of video-based chew counting by receiving image frames from a video camera, determining feature points within the image frames from the video camera, generating a motion signal based on movement of the feature points across the image frames from the video camera, and determining a chew count based on the motion signal.
摘要翻译：一种通过从摄像机接收图像帧的基于视频的咀嚼计数的系统和方法，确定来自摄像机的图像帧内的特征点，基于来自摄像机的图像帧上的特征点的移动产生运动信号，并且基于运动信号确定咀嚼计数。

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