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    Video anomaly detection based upon a sparsity model
    51.
    发明授权
    Video anomaly detection based upon a sparsity model 有权
    基于稀疏模型的视频异常检测

    公开(公告)号：US09489582B2

    公开(公告)日：2016-11-08

    申请号：US14534790

    申请日：2014-11-06

    Applicant: Xerox Corporation ,  The Penn State Research Foundation

    Inventor： Raja Bala ,  Aaron M. Burry ,  Vishal Monga ,  Xuan Mo

    IPC: G06K9/00

    CPC classification number: G06K9/00785 ,  G06K9/00335

    Abstract: Methods, systems, and processor-readable media for video anomaly detection based upon a sparsity model. A video input can be received and two or more diverse descriptors of an event can be computed from the video input. The descriptors can be combined to form an event matrix. A sparse reconstruction of the event matrix can be performed with respect to an over complete dictionary of training events represented by the diverse descriptors. A step can then be performed to determine if the event is anomalous by computing an outlier rejection measure on the sparse reconstruction.

    Abstract translation: 基于稀疏模型的视频异常检测的方法，系统和处理器可读介质。 可以接收视频输入，并且可以从视频输入计算事件的两个或多个不同描述符。 描述符可以组合形成一个事件矩阵。 相对于由不同描述符表示的训练事件的完整字典，可以执行事件矩阵的稀疏重建。 然后可以执行一个步骤，以通过计算稀疏重建的异常值拒绝测量来确定事件是否是异常的。

    Apparatus and method for image mosiacking under low-light conditions
    52.
    发明授权
    Apparatus and method for image mosiacking under low-light conditions 有权
    低光条件下图像清除的装置和方法

    公开(公告)号：US09392185B1

    公开(公告)日：2016-07-12

    申请号：US14619956

    申请日：2015-02-11

    Applicant: Xerox Corporation

    Inventor： Jayant Kumar ,  Sungmin Eum ,  Raja Bala

    IPC: H04N5/235 ,  H04N5/225 ,  H04N5/265

    CPC classification number: H04N5/2354 ,  G06T3/4038 ,  G06T5/005 ,  G06T5/50 ,  H04N1/3876 ,  H04N5/2256 ,  H04N5/23229 ,  H04N5/265

    Abstract: An apparatus, method and non-transitory computer readable medium for mosaicking a plurality of images captured in a low-light condition are disclosed. For example, the apparatus includes an image capturing module, a flash module, a computer-readable medium and a processor. The processor executes a plurality of instructions stored on the computer-readable medium. The operations include determining a spacing between each one of the plurality of images, capturing the plurality of images in accordance with the spacing, aligning the plurality of images that are captured and mosaicking the plurality of images that are aligned into a single image by, for each one of the plurality of images, replacing one or more pixels in the respective flash spot region using one or more pixels in a subsequent image that is in a same location as the respective flash spot region such that the information is recovered.

    Abstract translation: 公开了一种用于镶嵌在低光条件下拍摄的多个图像的装置，方法和非暂时计算机可读介质。 例如，该装置包括图像捕获模块，闪存模块，计算机可读介质和处理器。 处理器执行存储在计算机可读介质上的多个指令。 操作包括确定多个图像中的每个图像之间的间隔，根据间隔捕获多个图像，将捕获的多个图像对齐并将对准的单个图像的多个图像镶嵌在一起，用于 多个图像中的每一个，使用与相应闪光斑区域位于相同位置的后续图像中的一个或多个像素替换相应闪光斑区域中的一个或多个像素，使得信息被恢复。

    Flash/no-flash imaging for binarization
    54.
    发明授权
    Flash/no-flash imaging for binarization 有权
    用于二值化的闪光/无闪光成像

    公开(公告)号：US09275448B2

    公开(公告)日：2016-03-01

    申请号：US14011028

    申请日：2013-08-27

    Applicant: Xerox Corporation

    Inventor： Martin S. Maltz ,  Raja Bala ,  Phillip J. Emmett

    IPC: G06K9/36 ,  G06T5/50 ,  G06T5/00

    CPC classification number: H04N1/00997 ,  G06T5/007 ,  G06T5/50 ,  G06T2207/20221 ,  G06T2207/30176 ,  H04N1/028

    Abstract: Provided are methods and systems for generating a binarized representation of a document using a mobile device configured to provide a Flashed and No-flashed image of the document. According to an exemplary method, the Flash and No-flash images are aligned and blended, where the resulting image includes the No-flash image where any hot spots are included in the Flash image. After blending, the blended image is binarized.

    Abstract translation: 提供了用于使用被配置为提供文档的闪烁和无闪光图像的移动设备来生成文档的二进制表示的方法和系统。 根据示例性方法，闪光和无闪光图像被对准和混合，其中所得到的图像包括闪光图像，其中任何热点都包括在闪光图像中。 混合后，将混合图像二值化。

    AUGMENTING BARCODES WITH SECONDARY ENCODING FOR ANTI-COUNTERFEITING
    55.
    发明申请
    AUGMENTING BARCODES WITH SECONDARY ENCODING FOR ANTI-COUNTERFEITING 有权
    通过二次编码进行反补贴

    公开(公告)号：US20160012324A1

    公开(公告)日：2016-01-14

    申请号：US14326682

    申请日：2014-07-09

    Applicant: Xerox Corporation

    Inventor： Reiner Eschbach ,  Raja Bala ,  Saurabh Prabhat ,  Judith E. Stinehour

    IPC: G06K19/06 ,  G06K15/02 ,  G06K1/12

    CPC classification number: G06K19/06037 ,  G06K1/121 ,  G06K15/021 ,  G06K19/06056

    Abstract: A system generates a secure barcode by: identifying a primary pattern for a two-dimensional barcode to be printed on a substrate, wherein the primary pattern comprises of a set of dark cells and a set of light cells; identifying a two-dimensional micro-shape, wherein the micro-shape has a size that is no larger than a size of each cell of the two-dimensional barcode; generating a secondary pattern comprising a plurality of the micro-shapes; and superimposing the secondary pattern with the primary pattern for the two-dimensional barcode to yield a secure barcode. The resulting two-dimensional barcode includes a primary pattern comprising a set of dark cells and a set of light cells, where the sets represent encoded data, along with a secondary pattern of micro-shapes that are superimposed with the primary pattern.

    Abstract translation: 系统通过以下方式产生安全的条形码：识别要印刷在基板上的二维条形码的主图案，其中所述主图案包括一组暗单元格和一组光单元; 识别二维微形状，其中所述微形状的尺寸不大于所述二维条形码的每个单元的尺寸; 产生包括多个所述微型的次级图案; 并且将二次图案与用于二维条形码的主图案叠加以产生安全的条形码。 所得到的二维条形码包括包括一组暗单元格和一组光单元的主图案，其中所述组表示编码数据，以及与主图案叠加的微形二次图案。

    AUTOMATIC MOBILE PHOTO CAPTURE USING VIDEO ANALYSIS
    57.
    发明申请
    AUTOMATIC MOBILE PHOTO CAPTURE USING VIDEO ANALYSIS 有权
    自动移动照片使用视频分析

    公开(公告)号：US20150054975A1

    公开(公告)日：2015-02-26

    申请号：US13972346

    申请日：2013-08-21

    Applicant: Xerox Corporation

    Inventor： Phillip J. Emmett ,  Raja Bala ,  Michael R. Furst ,  Lina Fu

    IPC: H04N5/232 ,  G06K9/00

    CPC classification number: H04N5/23245 ,  G06K9/00355 ,  G06K9/00442 ,  G06K9/00496 ,  G06K9/036 ,  G06K9/228 ,  G06K9/32

    Abstract: A system creates an electronic file corresponding to a printed artifact by launching a video capture module that causes an imaging sensor of a mobile electronic device to capture a video of a scene that includes the printed artifact. The system analyzes image frames in the video in real time as the video is captured to identify a suitable instance. The suitable instance is a frame or sequence of frames that contains at least a portion of the printed artifact and that also satisfies one or more image quality criteria or other criteria. Upon identification of each suitable instance, the system will automatically cause a photo capture module of the device to capture a still image of the printed artifact. The still image has a resolution that is higher than that of the image frames in the video. The system will save the captured still images to a computer-readable file.

    Abstract translation: 系统通过启动视频捕获模块来创建与打印的伪影相对应的电子文件，所述视频捕获模块使得移动电子设备的成像传感器捕获包括打印伪像的场景的视频。 当捕获视频以识别合适的实例时，系统实时分析视频中的图像帧。 合适的实例是包含打印伪像的至少一部分并且还满足一个或多个图像质量标准或其他标准的帧或帧序列。 在识别每个合适的实例之后，系统将自动地使得设备的照片捕获模块捕获打印的伪像的静止图像。 静止图像的分辨率高于视频中的图像帧。 系统将捕获的静态图像保存到计算机可读文件中。

    TRAFFIC CAMERA CALIBRATION UPDATE UTILIZING SCENE ANALYSIS
    58.
    发明申请
    TRAFFIC CAMERA CALIBRATION UPDATE UTILIZING SCENE ANALYSIS 有权
    交通相机校准更新利用场景分析

    公开(公告)号：US20140313347A1

    公开(公告)日：2014-10-23

    申请号：US13868267

    申请日：2013-04-23

    Applicant: XEROX CORPORATION

    Inventor： Wencheng Wu ,  Edul N. Dalal ,  Raja Bala

    IPC: H04N17/00

    CPC classification number: H04N17/002 ,  G06T7/80 ,  G06T2207/10016 ,  G06T2207/20076 ,  G06T2207/30232 ,  G06T2207/30236

    Abstract: Methods and systems are disclosed for updating camera geometric calibration utilizing scene analysis. Geometric calibration parameters can be derived with respect to one or more cameras and selected reference points of interest identified from a scene acquired by one or more of such cameras. The camera geometric calibration parameters can be applied to image coordinates of the selected reference points of interest to provide real-world coordinates at a time of initial calibration of the camera(s). A subset of a video stream from the camera(s) can then be analyzed to identify features of a current scene captured by the camera(s) that match the selected reference points of interest and provide a current update of the camera geometric calibration parameters with respect to the current scene.

    Abstract translation: 公开了利用场景分析更新摄像机几何校准的方法和系统。 可以相对于从一个或多个这样的相机获取的场景中识别的一个或多个摄像机和所选择的感兴趣的参考点导出几何校准参数。 相机几何校准参数可以应用于所选择的参考点的图像坐标，以在相机的初始校准时提供真实世界坐标。 然后可以分析来自相机的视频流的子集，以识别由相机捕获的当前场景的特征，所述相机与所选择的感兴趣的参考点匹配，并且提供相机几何校准参数的当前更新， 尊重当前场景。

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