公开(公告)号：US20070003109A1

公开(公告)日：2007-01-04

申请号：US11170638

申请日：2005-06-30

申请人： Wencheng Wu ,  Meera Sampath

发明人： Wencheng Wu ,  Meera Sampath

IPC分类号： G06K9/00

CPC分类号： H04N1/00015 ,  G06K9/036 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00076 ,  H04N1/00079

摘要： A system for activating automated image quality diagnostic systems via a direct communication from the image-based control system is disclosed. The system includes a printing engine configured to intake electronic image input and to output tangible image output based on the electronic image input, an image-based measurement system configured to make measurements of image parameters associated with the tangible image output, and an automated compensation system configured to store nominal value parametric measurements for one or more image parameters measured by the image-based measurement system and to compare the nominal value measurements to related one or more parameters measured to determine anomalies in the output tangible image system.

摘要翻译： 公开了一种通过基于图像的控制系统的直接通信激活自动图像质量诊断系统的系统。 该系统包括配置成摄取电子图像输入并基于电子图像输入输出有形图像输出的打印引擎，配置为对与有形图像输出相关联的图像参数进行测量的基于图像的测量系统，以及自动补偿系统 被配置为存储用于由基于图像的测量系统测量的一个或多个图像参数的标称值参数测量值，并将标称值测量值与测量的相关一个或多个参数进行比较，以确定输出有形图像系统中的异常。

公开(公告)号：US09870704B2

公开(公告)日：2018-01-16

申请号：US13527673

申请日：2012-06-20

申请人： Martin Edward Hoover ,  David Martin Todd Jackson ,  Wencheng Wu ,  Vladimir Kozitsky

发明人： Martin Edward Hoover ,  David Martin Todd Jackson ,  Wencheng Wu ,  Vladimir Kozitsky

IPC分类号： H04N17/02 ,  G08G1/017 ,  H04N17/00 ,  G06T7/80

CPC分类号： G08G1/0175 ,  G06T7/80 ,  G06T2207/10016 ,  G06T2207/30204 ,  G06T2207/30236 ,  H04N17/002

摘要： A method and system for camera calibration comprises configuring a calibration target comprising calibration reflectors on a test vehicle. Video of a test scene is collected. Next the test vehicle is identified as it enters the test scene and recorded as it passes through the test scene. The position of the calibration target in each frame of the video is determined and the corresponding individual position of each calibration reflector for each frame of the recorded frames is used to construct a camera calibration map to calibrate the video camera.

公开(公告)号：US09129524B2

公开(公告)日：2015-09-08

申请号：US13433809

申请日：2012-03-29

申请人： Diana L. Delibaltov ,  Wencheng Wu ,  Robert P. Loce ,  Edgar Bernal

发明人： Diana L. Delibaltov ,  Wencheng Wu ,  Robert P. Loce ,  Edgar Bernal

IPC分类号： G06K9/00 ,  G08G1/04 ,  G08G1/065 ,  G06K9/62 ,  H04N7/18 ,  G06K9/46

CPC分类号： G08G1/04 ,  G06K9/00785 ,  G06K9/00812 ,  G06K9/6269 ,  G06K2009/4666 ,  G08G1/065

摘要： Described herein is a method of determining parking lot occupancy from digital images, including a set-up procedure that includes receiving a layout of a parking lot and estimating parking space volume for at least one viewing angle and the probability that an observed pixel belongs to the parking space volume. The method further includes acquiring one or more image frames of the parking lot from at least one digital camera; performing pixel classification using a vehicle detector on the acquired image frames to determine a likelihood that a pixel belongs to a vehicle; computing a probability that a parking space is occupied by a vehicle based on a spatially varying membership probability density function and a likelihood of vehicle pixels within a region of interest; and determining parking lot vacancy via a comparison of the computed probability that a parking space is occupied by a vehicle to a pre-determined threshold.

摘要翻译： 这里描述了一种从数字图像中确定停车场占用的方法，包括建立过程，其包括接收停车场的布局并估计至少一个视角的停车空间体积，以及观察像素属于 停车位容积。 该方法还包括从至少一个数字照相机获取停车场的一个或多个图像帧; 使用车辆检测器对所获取的图像帧执行像素分类，以确定像素属于车辆的可能性; 基于空间变化的隶属概率密度函数和感兴趣区域内的车辆像素的可能性来计算车辆占据的概率; 以及通过将所述计算出的停车位被车辆占据的概率与预定阈值进行比较来确定停车场空置。

公开(公告)号：US08971573B2

公开(公告)日：2015-03-03

申请号：US13611718

申请日：2012-09-12

申请人： Wencheng Wu

发明人： Wencheng Wu

IPC分类号： G06K9/00

CPC分类号： G06K9/00805 ,  G06T7/248 ,  G06T2207/30236

摘要： A method for tracking a moving vehicle includes detecting the vehicle by acquiring a series of temporal related image frames. In an initial frame, the detecting includes locating a reference feature representative of a vehicle. The method further includes setting the reference feature as a full-size template. The method includes tracking the vehicle by searching a current frame for features matching the full-size template and at least one scaled template. The tracking further includes setting as an updated template one of the full-size and scaled templates closest matching the feature. The method includes repeating the tracking using the updated template for each next frame in the series.

摘要翻译： 用于跟踪移动车辆的方法包括通过获取一系列时间相关图像帧来检测车辆。 在初始帧中，检测包括定位代表车辆的参考特征。 该方法还包括将参考特征设置为全尺寸模板。 该方法包括通过搜索当前帧来跟踪匹配全尺寸模板和至少一个缩放模板的特征来跟踪车辆。 跟踪还包括将更新的模板设置为与特征最匹配的全尺寸和缩放模板之一。 该方法包括使用系列中每个下一帧的更新的模板重复跟踪。

公开(公告)号：US08935082B2

公开(公告)日：2015-01-13

申请号：US13357034

申请日：2012-01-24

申请人： Edul N Dalal ,  Wencheng Wu

发明人： Edul N Dalal ,  Wencheng Wu

IPC分类号： G06F19/00 ,  G08G1/01 ,  G06K9/20

CPC分类号： G08G1/0116 ,  G06K9/2018 ,  G08G1/052 ,  G08G1/054

摘要： A system and method which detects and uses a point of contact between a vehicle's tire and the pavement as a reference point to improve the accuracy of vehicle speed detection in a motorized vehicle speed detection system. In one embodiment, a plurality of infrared images of a moving vehicle are received. Each of the images is separated in time by known intervals. The images are captured using an infrared camera which can be a single-band or multi-band camera which operates in an infrared wavelength band selected to enhance a contrast between the vehicle's tires and the road surface. For each image, a point of contact is determined where a same tire contacts the road surface. These points and the time interval separations are used to calculate the vehicle's speed. An alert signal is initiated to a traffic enforcement authority if the speed exceeds the road's speed limit.

摘要翻译： 检测并使用车辆的轮胎与路面之间的接触点作为基准点的系统和方法，以提高机动车辆速度检测系统中的车辆速度检测的精度。 在一个实施例中，接收移动车辆的多个红外图像。 每个图像以已知的间隔在时间上分离。 使用红外线摄像机捕获图像，该红外摄像机可以是选择的红外波长带中操作的单频带或多频带相机，以增强车辆轮胎和路面之间的对比度。 对于每个图像，确定相同轮胎接触路面的接触点。 这些点和时间间隔分离用于计算车辆的速度。 如果速度超过道路的速度限制，则向交通执法机关发出警报信号。

公开(公告)号：US08879832B2

公开(公告)日：2014-11-04

申请号：US13533459

申请日：2012-06-26

申请人： Edul N. Dalal ,  Wencheng Wu

发明人： Edul N. Dalal ,  Wencheng Wu

IPC分类号： G06K9/00

CPC分类号： G06K7/1408 ,  G06K2019/06225

摘要： When an imaging device receives an image file that includes a color barcode, a processor of the imaging device and/or a remote processor may decode the barcode by identifying informational elements and calibration elements in the barcode. When the calibration elements are detected, one or more color model parameters are determined, and a color model is developed. When an informational element is then detected, a color value is determined for the informational element, the color model is applied using the color model parameters to yield an adjusted color value for the informational element, and the adjusted color value is used to decode the color barcode.

摘要翻译： 当成像设备接收到包括彩色条形码的图像文件时，成像设备的处理器和/或远程处理器可以通过识别条形码中的信息元素和校准元件来对条形码进行解码。 当检测到校准元件时，确定一个或多个颜色模型参数，并且开发颜色模型。 当检测到信息元素时，为信息元素确定颜色值，使用颜色模型参数应用颜色模型以产生用于信息元素的调整颜色值，并且使用调整后的颜色值来解码颜色 条码。

公开(公告)号：US08868339B2

公开(公告)日：2014-10-21

申请号：US13434156

申请日：2012-03-29

申请人： Wencheng Wu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Edul N. Dalal

IPC分类号： G01C21/00 ,  G08G1/123

CPC分类号： G01C21/3461

摘要： A system and method for informing commuters of real-time time of arrival and cost information with respect to one or more routes prior to commencement of a trip. Reserved lane information (e.g., toll charge, traffic speeds in the reserved and general lanes, etc.) can be integrated with a data feed provided to, for example, navigation enabled devices such as in-car guidance systems or mobile phones. Time of arrival information with respect to the destination can be provided based on wireless data indicative of traffic conditions and highway speed limit information. Additionally, real-time toll charges can be provided to the commuter for multiple routes.

摘要翻译： 一种用于在行程开始之前通知乘客实时到达时间和关于一条或多条路线的成本信息的系统和方法。 可以将保留的车道信息（例如，费用，保留车道和通用车道中的车速等）与提供给诸如车载导航系统或移动电话之类的导航功能设备的数据馈送集成。 可以基于指示交通状况和公路速度限制信息的无线数据来提供相对于目的地的到达时间信息。 另外，可以向通勤者提供多条路线的实时通行费用。

公开(公告)号：US20140072168A1

公开(公告)日：2014-03-13

申请号：US13611718

申请日：2012-09-12

申请人： Wencheng Wu

发明人： Wencheng Wu

IPC分类号： G06K9/62

CPC分类号： G06K9/00805 ,  G06T7/248 ,  G06T2207/30236

摘要： A method for tracking a moving vehicle includes detecting the vehicle by acquiring a series of temporal related image frames. In an initial frame, the detecting includes locating a reference feature representative of a vehicle. The method further includes setting the reference feature as a full-size template. The method includes tracking the vehicle by searching a current frame for features matching the full-size template and at least one scaled template. The tracking further includes setting as an updated template one of the full-size and scaled templates closest matching the feature. The method includes repeating the tracking using the updated template for each next frame in the series.

摘要翻译： 用于跟踪移动车辆的方法包括通过获取一系列时间相关图像帧来检测车辆。 在初始帧中，检测包括定位代表车辆的参考特征。 该方法还包括将参考特征设置为全尺寸模板。 该方法包括通过搜索当前帧来跟踪匹配全尺寸模板和至少一个缩放模板的特征来跟踪车辆。 跟踪还包括将更新的模板设置为与特征最匹配的全尺寸和缩放模板之一。 该方法包括使用系列中每个下一帧的更新的模板重复跟踪。

公开(公告)号：US20140063236A1

公开(公告)日：2014-03-06

申请号：US13598098

申请日：2012-08-29

申请人： Matthew Adam Shreve ,  Michael C. Mongeon ,  Robert P. Loce ,  Edgar A. Bernal ,  Wencheng Wu

发明人： Matthew Adam Shreve ,  Michael C. Mongeon ,  Robert P. Loce ,  Edgar A. Bernal ,  Wencheng Wu

IPC分类号： G06K9/48 ,  G06K9/62 ,  H04N7/18

CPC分类号： G06K9/00302 ,  G06K9/00228 ,  G06K9/00315 ,  G06K9/00771 ,  G06K2009/4666

摘要： This disclosure provides a method and system for automatically recognizing facial expressions at variable resolutions of video. According to one exemplary method, facial expressions are detected, extracted and classified from a video sequence based on an automatic localization of the periocular region associated with a detected and extracted face.

摘要翻译： 本公开提供了一种用于在视频的可变分辨率下自动识别面部表情的方法和系统。 根据一个示例性方法，基于与检测和提取的面部相关联的眼周区域的自动定位，从视频序列检测，提取和分类面部表情。

公开(公告)号：US08649566B2

公开(公告)日：2014-02-11

申请号：US12838942

申请日：2010-07-19

申请人： Beilei Xu ,  Wencheng Wu ,  Peter Paul ,  Palghat Ramesh

发明人： Beilei Xu ,  Wencheng Wu ,  Peter Paul ,  Palghat Ramesh

IPC分类号： G06K9/00 ,  G06K9/03 ,  G06K9/20

CPC分类号： H04N1/00002 ,  G06K9/036 ,  H04N1/00018 ,  H04N1/00047 ,  H04N1/00084

摘要： A method for detecting motion quality error of printed documents having text in a printing system includes: printing a document having text lines, each text line comprising a plurality of characters; scanning the printed document to generate a scanned image; detecting positions in a process direction of the printing system of one of text lines and characters in the scanned image; determining position errors in the process direction in the printed document based on the detected positions in the scanned image; determining at least one motion quality defect of the printing system in the process direction based on the determined position errors; and initiating an activity associated with said printing system in response to a motion quality error having been determined. A system for detecting motion quality error of printed documents is also disclosed.

摘要翻译： 一种用于检测在打印系统中具有文本的打印文档的运动质量错误的方法，包括：打印具有文本行的文档，每个文本行包括多个字符; 扫描打印文档以生成扫描图像; 检测所述扫描图像中的文本行和文字之一的所述打印系统的处理方向的位置; 基于扫描图像中检测到的位置确定打印文档中的处理方向上的位置误差; 基于所确定的位置误差，确定所述打印系统在所述处理方向上的至少一个运动质量缺陷; 以及响应于已经确定的运动质量错误，发起与所述打印系统相关联的活动。 还公开了一种用于检测打印文件的运动质量误差的系统。