公开(公告)号：US08737747B2

公开(公告)日：2014-05-27

申请号：US13026367

申请日：2011-02-14

申请人： Orhan Bulan ,  Robert P. Loce ,  Edgar A. Bernal ,  Wencheng Wu ,  Beilei Xu ,  Thomas F. Wade

发明人： Orhan Bulan ,  Robert P. Loce ,  Edgar A. Bernal ,  Wencheng Wu ,  Beilei Xu ,  Thomas F. Wade

IPC分类号： G06K9/00 ,  G06K9/62 ,  G06T7/00 ,  G01M17/02

CPC分类号： G06K9/00 ,  G01M17/027 ,  G06K9/6247 ,  G06K2209/19 ,  G06T7/0004 ,  G06T2207/20081 ,  G06T2207/30236

摘要： Methods and systems for discriminating between tires. One or more images of an unknown tire are received. One or more tread features are extracted from the images. The class of the unknown tire is determined using a classifier that matches the tread features to known tread features.

摘要翻译： 用于区分轮胎的方法和系统。 接收未知轮胎的一个或多个图像。 从图像中提取一个或多个胎面特征。 未知轮胎的类别使用将胎面特征与已知胎面特征相匹配的分类器来确定。

公开(公告)号：US20130345568A1

公开(公告)日：2013-12-26

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 ,  A61B6/00

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。

公开(公告)号：US20130343634A1

公开(公告)日：2013-12-26

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： G06K9/36

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。

公开(公告)号：US20130343614A1

公开(公告)日：2013-12-26

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： G06K9/36

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 continuously processed by repeatedly: (1) conditioning the estimated source signal obtained on a previous iteration to produce a next reference signal; (2) using this reference signal to perform constrained source separation on this next segment to obtain an estimated source signal. A frequency at which this next estimated source signal converged is the subject's estimated cardiac pulse rate for this signal segment. The reference signal is repeatedly updated. Upon convergence, the sliding window is shifted to define a next segment of the time-series signal. The method repeats for each time-series signal segment on a continuous basis or until a termination criteria is met. In such a manner, the subject's cardiac pulse rate is estimated from video data 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，时间序列信号通过重复地连续处理：（1）调节在先前迭代中获得的估计的源信号以产生下一个参考信号; （2）使用该参考信号在该下一个段执行受限的源分离以获得估计的源信号。 该下一个估计的源信号收敛的频率是该信号段的对象的估计的心脏脉搏率。 参考信号被重复更新。 在收敛时，滑动窗口被移动以限定时间序列信号的下一个段。 该方法在连续的基础上重复每个时间序列信号段，或直到满足终止标准。 以这种方式，从连续的视频数据估计被检者的心脏脉搏率。

公开(公告)号：US08610944B2

公开(公告)日：2013-12-17

申请号：US12336654

申请日：2008-12-17

申请人： Beilei Xu ,  Robert P. Loce ,  Jess R. Gentner

发明人： Beilei Xu ,  Robert P. Loce ,  Jess R. Gentner

IPC分类号： G06K15/02 ,  H04N1/04 ,  G06T5/00 ,  G06K9/40 ,  G03F9/00

CPC分类号： G06K15/02 ,  B41J11/008 ,  B41J11/009

摘要： A method of achieving process-direction sub-raster magnification adjustment using non-redundant overwriting. The raster imager provides overwriting while the image path provides non-redundant data for each pass according to the desired magnification adjustment. The same laser power level can be used for the multiple writes, or optionally, it may be varied to further improve spatial resolution of the adjustment.

摘要翻译： 使用非冗余重写实现过程方向子光栅放大调整的方法。 光栅成像器提供覆盖，而图像路径根据期望的放大倍数调整为每次通过提供非冗余数据。 相同的激光功率水平可以用于多次写入，或者可选地，其可以被改变以进一步改善调整的空间分辨率。

公开(公告)号：US20130322729A1

公开(公告)日：2013-12-05

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： G06K9/46

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：US08571269B2

公开(公告)日：2013-10-29

申请号：US13049191

申请日：2011-03-16

申请人： Wencheng Wu ,  Beilei Xu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Beilei Xu ,  Edul N. Dalal

IPC分类号： G06K9/00

CPC分类号： H04N1/52 ,  H04N1/405

摘要： What is disclosed is a system and method for image quality (IQ) defect detection via classification of halftone dots present on customer prints. In one embodiment, spatially-varying thresholds are applied on the sensed image in order to classify the halftone dots for IQ defect detection. The resolving power of the sensor is characterized and the sensor responses to patches printed with the print device are characterized. A de-blurring filter is designed which is appropriate for compensating the characterized resolving power of the sensor. Image enhancement is applied to the image using the de-blurring filter. Halftone dots present on the prints are classified by analyzing the enhanced image with the results of the sensor response characterization. Once classified, single separation halftone dot images can be more readily analyzed for defects. The present method allows sensor resolution as low as the size of the halftone dots of the printer under test.

摘要翻译： 公开的是通过客户印刷品上存在的半色调点的分类的图像质量（IQ）缺陷检测的系统和方法。 在一个实施例中，空间变化的阈值被施加在所感测的图像上，以便对用于IQ缺陷检测的半色调点进行分类。 表征传感器的分辨率，并对传感器对印刷设备印刷的贴片进行响应。 设计了一种去模糊滤波器，适用于补偿传感器的特征分辨率。 图像增强应用于使用去模糊滤镜的图像。 使用传感器响应表征的结果分析增强图像，将印刷品上存在的半色调点分类。 一旦分类，单分离半色调点图像可以更容易地分析缺陷。 本方法允许传感器分辨率低于被测打印机的半色调点的大小。

公开(公告)号：US08462388B2

公开(公告)日：2013-06-11

申请号：US12796375

申请日：2010-06-08

申请人： Beilei Xu ,  Wencheng Wu

发明人： Beilei Xu ,  Wencheng Wu

IPC分类号： G06F15/00 ,  G06K1/00 ,  H04N1/60 ,  H04N1/46

CPC分类号： H04N1/6047 ,  H04N1/6036

摘要： What is disclosed is a novel system and method for banding defect detection in user document images to improve image quality trend analysis in multifunction digital imaging system architectures. The present banding detection process uses region-based, time sequence analysis, and graylevels of image regions in a collection of a sequence of regions, to improve banding detection. The present method independently analyzes the colorant separations to detect banding due to sources that are colorant-dependent, e.g., due to a single developer housing. This identification can be performed in the presence of multiple banding defects.

摘要翻译： 公开了一种用于在用户文档图像中条带缺陷检测的新型系统和方法，以改善多功能数字成像系统架构中的图像质量趋势分析。 本发明的条带检测过程使用区域，时间序列分析和区域序列集合中的图像区域的灰度级，以改善条带检测。 本方法独立地分析着色剂分离，以检测由于着色剂依赖性的来源而引起的条纹，例如由于单个显影剂外壳。 该识别可以在存在多个条带缺陷的情况下进行。

公开(公告)号：US08451501B2

公开(公告)日：2013-05-28

申请号：US12966244

申请日：2010-12-13

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

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

IPC分类号： H04N1/405 ,  H04N1/40 ,  G06K9/00 ,  G06K9/46

CPC分类号： G06T1/0092 ,  G06T2201/0051

摘要： Provided are methods, apparatus and systems related to watermark decoding via spectral analysis of an image. According to one exemplary method, spectral analysis is performed to decode a watermark within an image, where the pixel spacing associated with the image was modulated to encode the watermark.

摘要翻译： 提供了通过图像的光谱分析与水印解码相关的方法，装置和系统。 根据一个示例性方法，执行频谱分析以对图像内的水印进行解码，其中与图像相关联的像素间隔被调制以对水印进行编码。

公开(公告)号：US20130106622A1

公开(公告)日：2013-05-02

申请号：US13284286

申请日：2011-10-28

申请人： Peter Paul ,  Mark Cantelli ,  Beilei Xu ,  Abu Islam

发明人： Peter Paul ,  Mark Cantelli ,  Beilei Xu ,  Abu Islam

IPC分类号： G08G1/01

CPC分类号： G08G1/0175 ,  G08G1/0116

摘要： An upstream vehicle detection system captures images of a vehicle as it travels through a high occupancy vehicle (HOV) lane or high occupancy vehicle tolling (HOT) station and generates an hypothesis as to whether the vehicle is complying with HOV or HOT rules based on image analysis. A database of historical information about various vehicles' compliance with HOV or HOT rules is consulted to determine whether the vehicle has previously been identified as a potential violator and pulled over by law enforcement as a result. If the vehicle was previously pulled over by law enforcement and determined to be complying with HOV or HOT rules (a false positive), then the violation hypothesis may be weighted in favor of not pulling the vehicle over.

摘要翻译： 上游车辆检测系统在行驶通过高占用车辆（HOV）车道或高占用车辆收费站（HOT）站时捕获车辆的图像，并产生关于车辆是否符合基于图像的HOV或HOT规则的假设 分析。 咨询有关各种车辆符合HOV或HOT规则的历史信息数据库，以确定车辆以前是否被确定为潜在的违规者，并因此被执法人员拖欠。 如果车辆以前被执法人员拉扯，并决定遵守HOV或HOT规则（假阳性），则违反假设可能被加权，有利于不拉车。