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公开(公告)号：US09736374B2
公开(公告)日：2017-08-15
申请号：US14031128
申请日：2013-09-19
Applicant: Xerox Corporation
Inventor： Wencheng Wu
CPC classification number: H04N5/23267 , G06K9/00771 , G06K9/00812
Abstract: Methods and systems for parking lot occupancy determination. Video of an entrance to a parking lot (or other facility) can be acquired utilizing one or more video cameras focusing on a pre-defined vision-based region of interest and a pre-defined video-based region of interest. The video can be video processed via a classifier that is pre-trained to take into account potential camera shake disturbances to generate video output data thereof. The video output data can then be trajectory smoothed. The video output data (following trajectory smoothing) can then be analyzed for parking lot occupancy data such that the impact of camera shake with respect to the video camera(s) is minimized to determine parking lot occupancy.
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公开(公告)号：US20170169297A1
公开(公告)日：2017-06-15
申请号：US14963602
申请日：2015-12-09
Applicant: Xerox Corporation
Inventor： Edgar A. Bernal , Aaron M. Burry , Matthew A. Shreve , Michael C. Mongeon , Robert P. Loce , Peter Paul , Wencheng Wu
CPC classification number: G06K9/00778 , G06K9/00369 , G06K2009/3291 , G06T7/11
Abstract: A system and method of monitoring a region of interest comprises obtaining visual data comprising image frames of the region of interest over a period of time, analyzing individual subjects within the region of interest, the analyzing including at least one of tracking movement of individual subjects over time within the region of interest or extracting an appearance attribute of the individual subjects, and defining a group to include individual subjects having at least one of similar movement profiles or similar appearance attributes. The tracking movement includes detecting at least one of a trajectory of an individual subject within the region of interest, a dwell of an individual subject in at least one location within the region of interest, or an entrance or exit location within the region of interest.
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公开(公告)号：US09666088B2
公开(公告)日：2017-05-30
申请号：US13961139
申请日：2013-08-07
Applicant: Xerox Corporation
Inventor： Edul N. Dalal , Wencheng Wu , Richard L. Howe
CPC classification number: G09B5/02 , G06K9/00228 , G06K9/00295 , G06K9/00335 , G07C9/00158
Abstract: A video-based teaching aid system and method. Video images are recorded of at least some of a plurality of people in a classroom setting by use of a video camera arrangement. Expressions of the people in the video images are identified by use of an expression recognition module configured to receive the video images from the video camera arrangement. The identified expressions of the people in the video images are correlated with at least one of an event or an outcome of an event occurring in a classroom setting by use of a correlation module. The results of the correlating are outputted by an output device.
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公开(公告)号：US09659204B2
公开(公告)日：2017-05-23
申请号：US14303724
申请日：2014-06-13
Applicant: Xerox Corporation
Inventor： Wencheng Wu , Dennis L. Venable , Steven R. Moore , Thomas F. Wade , Peter Paul , Adrien P. Côté
CPC classification number: G06K7/146 , G06K7/1443 , G06K7/1447 , G06K9/00664 , G06K9/00771 , G06K9/2063 , G06K9/46 , G06K9/4604 , G06K2009/4666
Abstract: This disclosure provides an image processing method and system for recognizing barcodes and/or product labels. According to an exemplary embodiment, the method uses a multifaceted detection process that includes both image enhancement of a candidate barcode region and other product label information associated with a candidate barcode region to identify a product label, where the candidate barcode region includes a nonreadable barcode. According to one exemplary application, a store profile is generated based on the identifications of the product labels which are associated with a location of a product within a store.
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公开(公告)号：US09619686B2
公开(公告)日：2017-04-11
申请号：US14643721
申请日：2015-03-10
Applicant: Xerox Corporation
Inventor： Wencheng Wu , Robert P. Loce , Raja Bala , Peter Paul , Thomas F. Wade , Dennis L. Venable , Steven R. Moore , Peter J. Knausdorf
CPC classification number: G06K7/10732 , G06K7/10574 , G06K7/10722 , G06K7/10821 , G06K7/1443 , G06K7/146 , G06K7/1465 , G06T5/001 , G06T2207/10152
Abstract: Eliminate or reduce the impact of glare in printed information tag recognition applications using single- and multi-pose external illumination coupled with intelligent processing. A shelf imager can acquire shelf images for printed information tag localization and recognition. An external illuminator can provide at least one illumination condition/pose for shelf image acquisition in addition to lighting associated with the enclosed environment. A glare region of interest (ROI) detector can analyze all or a portion of the acquired shelf images for glare to determine whether additional images need to be acquired using different illumination conditions provided by the single- or multi-pose external illuminator or whether full or portion of acquired images need to be analyzed by a printed information tag locator and recognizer. A printed information tag locator and recognizer can analyze all or a portion of the acquired images to localize and recognize data printed on the printed information tags.
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Patent Agency Ranking
36.发明授权Vehicle detection method and system including irrelevant window elimination and/or window score degradation 有权车辆检测方法和系统包括不相关的窗口消除和/或窗口评分降级公开(公告)号：US09514366B2
公开(公告)日：2016-12-06
申请号：US14171022
申请日：2014-02-03
Applicant: Xerox Corporation
Inventor： Stuart Alan Schweid , Orhan Bulan , Yao Rong Wang , Wencheng Wu , Robert Paul Loce
CPC classification number: G06K9/00624 , G06K9/00771 , G06K2209/23
Abstract: This disclosure provides vehicle detection methods and systems including irrelevant search window elimination and/or window score degradation. According to one exemplary embodiment, provided is a method of detecting one or more parked vehicles in a video frame, wherein candidate search windows are limited to one or more predefined window shapes. According to another exemplary embodiment, the method includes degrading a classification score of a candidate search window based on aspect ratio, window overlap area and/or a global maximal classification.
Abstract translation: 本公开提供了车辆检测方法和系统，包括无关的搜索窗口消除和/或窗口评分降级。 根据一个示例性实施例，提供了一种检测视频帧中的一个或多个停放车辆的方法，其中候选搜索窗口被限制为一个或多个预定窗口形状。 根据另一示例性实施例，该方法包括基于宽高比，窗口重叠区域和/或全局最大分类来降级候选搜索窗口的分类分数。
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公开(公告)号：US09471905B2
公开(公告)日：2016-10-18
申请号：US13940296
申请日：2013-07-12
Applicant: Xerox Corporation
Inventor： Edul N Dalal , Wencheng Wu , Yu An Sun , Julien Bourdaillet
CPC classification number: G06Q20/042 , G06K9/00483
Abstract: A method, a system, and a computer program product for processing a plurality of electronic documents are provided. The method includes marking at least one area in an electronic document selected from the plurality of electronic documents. The marked at least one area is then matched with corresponding area in the remaining electronic documents of the plurality of electronic documents. A score is computed for each of the remaining electronic documents of the plurality of electronic documents based on the matching. The plurality of electronic documents is then grouped into one or more groups based on the score.
Abstract translation: 提供了一种用于处理多个电子文档的方法，系统和计算机程序产品。 该方法包括在从多个电子文档中选择的电子文档中标记至少一个区域。 然后，将标记的至少一个区域与多个电子文档的其余电子文档中的相应区域相匹配。 基于匹配来计算多个电子文档中的剩余电子文档的分数。 然后，基于得分将多个电子文档分组成一个或多个组。
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公开(公告)号：US20160234464A1
公开(公告)日：2016-08-11
申请号：US14688230
申请日：2015-04-16
Applicant: Xerox Corporation
Inventor： Robert P. Loce , Beilei Xu , Edgar A. Bernal , Saurabh Prabhat , Wencheng Wu
CPC classification number: H04N7/183 , G06K9/00335 , G06K9/00711 , G06K9/00771 , H04N7/181
Abstract: A computer-vision based method for validating an activity workflow of a human performer includes identifying a target activity. The method includes determining an expected sequence of actions associated with the target activity. The method includes receiving a video stream from an image capture device monitoring an activity performed by an associated human performer. The method includes determining an external cue in the video stream. The method includes associating a frame capturing the external cue as a first frame in a key frame sequence. The method includes determining an action being performed by the associated human performer in the key frame sequence. In response to determining the action in the key frame sequence matching an expected action in the target activity, the method includes verifying the action as being performed in the monitored activity. In response to not determining the action in the key frame sequence, the method includes generating an alert indicating an error in the monitored activity.
Abstract translation: 用于验证人类表演者的活动工作流程的基于计算机视觉的方法包括识别目标活动。 该方法包括确定与目标活动相关联的预期动作序列。 该方法包括从监视由相关联的人类执行者执行的活动的图像捕获设备接收视频流。 该方法包括确定视频流中的外部提示。 该方法包括将捕获外部提示的帧作为关键帧序列中的第一帧进行关联。 该方法包括确定在关键帧序列中由相关联的人类执行者正在执行的动作。 响应于确定与目标活动中的预期动作匹配的关键帧序列中的动作，该方法包括将该动作验证为在所监视的活动中执行。 响应于不确定关键帧序列中的动作，该方法包括生成指示所监视活动中的错误的警报。
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公开(公告)号：US09377294B2
公开(公告)日：2016-06-28
申请号：US13920241
申请日：2013-06-18
Applicant: Xerox Corporation
Inventor： Wencheng Wu , Edgar A. Bernal , Lalit Keshav Mestha , Paul R. Austin
CPC classification number: G01B11/00 , G01B11/2513 , H04M2250/52
Abstract: What is disclosed is a wireless cellular device capable of determining a volume of an object in an image captured by a camera of that apparatus. In one embodiment, the present wireless cellular device comprises an illuminator for projecting a pattern of structured light with known spatial characteristics, and a camera for capturing images of an object for which a volume is to be estimated. The camera is sensitive to a wavelength range of the projected pattern of structured light. A spatial distortion is introduced by a reflection of the projected pattern off a surface of the object. And processor executing machine readable program instructions for performing the method of: receiving an image of the object from the camera; processing the image to generate a depth map; and estimating a volume of the object from the depth map. A method for using the present wireless cellular device is also provided.
Abstract translation: 所公开的是能够确定由该设备的照相机拍摄的图像中的物体的体积的无线蜂窝设备。 在一个实施例中，本无线蜂窝设备包括用于投射具有已知空间特征的结构化光的图案的照明器，以及用于捕获要估计音量的对象的图像的照相机。 相机对结构光的投影图案的波长范围敏感。 通过将投影图案从物体的表面反射出来引入空间失真。 以及处理器执行机器可读程序指令，用于执行以下方法：从所述摄像机接收所述对象的图像; 处理图像以生成深度图; 并从深度图估计对象的体积。 还提供了一种使用本无线蜂窝设备的方法。
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公开(公告)号：US09251416B2
公开(公告)日：2016-02-02
申请号：US14083861
申请日：2013-11-19
Applicant: Xerox Corporation
Inventor： Wencheng Wu , Edgar A. Bernal
IPC: G06K9/00
CPC classification number: G06K9/00624 , G06K9/00771 , G06T7/194 , G06T7/215 , G06T7/223 , G06T7/254 , G06T7/269 , G06T2207/20036 , G06T2207/20076 , G06T2207/30232
Abstract: A method and system for efficient non-persistent object motion detection comprises evaluating a video segment to identify at least two first pixel classes corresponding to a plurality of stationary pixels and a plurality of pixels in apparent motion, and evaluating the video segment to identify at least two second pixel classes corresponding to a background and a foreground indicative of the presence of a non-persistent object. The first pixel classes and the second pixel classes can be combined to define a final motion mask in the selected video segment indicative of the presence of a non-persistent object. An output can provide an indication that the object is in motion.
Abstract translation: 一种用于高效非持续对象运动检测的方法和系统，包括：评估视频段以识别对应于多个静止像素和明显运动中的多个像素的至少两个第一像素类别，以及评估视频段至少识别 对应于背景的两个第二像素类和指示非持久对象的存在的前景。 可以组合第一像素类和第二像素类以在所选择的视频段中定义指示非持久对象的存在的最终运动掩码。 输出可以提供对象运动的指示。
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