公开(公告)号：US20130265419A1

公开(公告)日：2013-10-10

申请号：US13441269

申请日：2012-04-06

申请人： Orhan Bulan ,  Yao Rong Wang ,  Zhigang Fan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yeqing Zhang

发明人： Orhan Bulan ,  Yao Rong Wang ,  Zhigang Fan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yeqing Zhang

IPC分类号： H04N7/18

CPC分类号： G08G1/143 ,  G08G1/147

摘要： A method for determining parking availability includes receiving video data from a sequence of frames taken from an image capture device that is monitoring a parking area. The method includes determining background and foreground images in an initial frame of the sequence of frames. The method further includes updating the background and foreground images in each of the sequence of frames following the initial frame. The method also includes determining a length of a parking space using the determined background and foreground images. The determining includes computing a pixel distance between a foreground image and one of an adjacent foreground image and an end of the parking area. The determining further includes mapping the pixel distance to an actual distance for estimating the length of the parking space.

摘要翻译： 用于确定停车可用性的方法包括从从正在监视停车区域的图像捕获装置获取的帧序列中接收视频数据。 该方法包括确定帧序列的初始帧中的背景和前景图像。 该方法还包括在初始帧之后的每个帧序列中更新背景和前景图像。 该方法还包括使用所确定的背景和前景图像确定停车位的长度。 该确定包括计算前景图像和相邻前景图像之一与停车区域的结束之间的像素距离。 该确定还包括将像素距离映射到用于估计停车位的长度的实际距离。

公开(公告)号：US08744132B2

公开(公告)日：2014-06-03

申请号：US13461266

申请日：2012-05-01

申请人： Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yao Rong Wang ,  Zhigang Fan

发明人： Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yao Rong Wang ,  Zhigang Fan

IPC分类号： G06K9/00 ,  G08G1/16

CPC分类号： G06K9/00771

摘要： A method and a system for determining a parking boundary violation includes receiving video data from a sequence of frames taken from an image capture device monitoring a parking area including at least a single parking space. A boundary is determined for defining at least one parking space in the parking area. A vehicle is detected in the parking area. A determination is made whether the detected vehicle is violating a parking regulation based on a position and size of the vehicle within the boundary.

摘要翻译： 用于确定停车边界违规的方法和系统包括从监视包括至少一个停车位的停车区域的图像捕获设备接收的帧序列中接收视频数据。 确定用于在停车区域中定义至少一个停车位的边界。 在停车区域内检测到车辆。 基于边界内的车辆的位置和大小来确定检测到的车辆是否违反停车规则。

公开(公告)号：US08666117B2

公开(公告)日：2014-03-04

申请号：US13441253

申请日：2012-04-06

申请人： Orhan Bulan ,  Yao Rong Wang ,  Robert P. Loce ,  Edgar A. Bernal ,  Zhigang Fan ,  Graham S. Pennington ,  David P. Cummins

发明人： Orhan Bulan ,  Yao Rong Wang ,  Robert P. Loce ,  Edgar A. Bernal ,  Zhigang Fan ,  Graham S. Pennington ,  David P. Cummins

IPC分类号： G06K9/00 ,  G08G1/16

CPC分类号： G06K9/00771 ,  G06K9/3233

摘要： A method for determining a parking violation includes receiving video data as a sequence of frames provided by a camera. The method includes defining a location of an exclusion zone in the video data. The method includes detecting a vehicle located in the defined exclusion zone. The detecting includes determining a background in an initial frame of the video data and determining a background in a select frame by applying a predetermined updating process. The detecting includes subtracting the background of the select frame from the initial frame to obtain an image difference. The detecting includes classifying the pixels in the image difference as foreground or background pixels and classifying the pixels in the foreground image as vehicle or non-vehicle pixels. The method includes determining a duration that the detected vehicle is in the exclusion zone based on a number of the sequence of frames including the detected vehicle.

摘要翻译： 用于确定停车违规的方法包括接收视频数据作为由相机提供的帧序列。 该方法包括在视频数据中定义排除区域的位置。 该方法包括检测位于限定的禁区中的车辆。 检测包括确定视频数据的初始帧中的背景，并通过应用预定的更新过程来确定选择帧中的背景。 检测包括从初始帧中减去选择帧的背景以获得图像差异。 检测包括将图像差异中的像素分类为前景或背景像素，并将前景图像中的像素分类为车辆或非车辆像素。 该方法包括基于包括检测到的车辆的帧序列的数量来确定检测到的车辆在排除区域中的持续时间。

公开(公告)号：US20130266185A1

公开(公告)日：2013-10-10

申请号：US13441253

申请日：2012-04-06

申请人： Orhan Bulan ,  Yao Rong Wang ,  Robert P. Loce ,  Edgar A. Bernal ,  Zhigang Fan ,  Graham S. Pennington ,  David P. Cummins

发明人： Orhan Bulan ,  Yao Rong Wang ,  Robert P. Loce ,  Edgar A. Bernal ,  Zhigang Fan ,  Graham S. Pennington ,  David P. Cummins

IPC分类号： G06K9/00

CPC分类号： G06K9/00771 ,  G06K9/3233

摘要： A method for determining a parking violation includes receiving video data as a sequence of frames provided by a camera. The method includes defining a location of an exclusion zone in the video data. The method includes detecting a vehicle located in the defined exclusion zone. The detecting includes determining a background in an initial frame of the video data and determining a background in a select frame by applying a predetermined updating process. The detecting includes subtracting the background of the select frame from the initial frame to obtain an image difference. The detecting includes classifying the pixels in the image difference as foreground or background pixels and classifying the pixels in the foreground image as vehicle or non-vehicle pixels. The method includes determining a duration that the detected vehicle is in the exclusion zone based on a number of the sequence of frames including the detected vehicle.

摘要翻译： 用于确定停车违规的方法包括接收视频数据作为由相机提供的帧序列。 该方法包括在视频数据中定义排除区的位置。 该方法包括检测位于限定的禁区中的车辆。 检测包括确定视频数据的初始帧中的背景，并通过应用预定的更新过程来确定选择帧中的背景。 检测包括从初始帧中减去选择帧的背景以获得图像差异。 检测包括将图像差异中的像素分类为前景或背景像素，并将前景图像中的像素分类为车辆或非车辆像素。 该方法包括基于包括检测到的车辆的帧序列的数量来确定检测到的车辆在排除区域中的持续时间。

公开(公告)号：US20130266188A1

公开(公告)日：2013-10-10

申请号：US13461266

申请日：2012-05-01

申请人： Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yao Rong Wang ,  Zhigang Fan

发明人： Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yao Rong Wang ,  Zhigang Fan

IPC分类号： G06K9/62

CPC分类号： G06K9/00771

摘要： A method and a system for determining a parking boundary violation includes receiving video data from a sequence of frames taken from an image capture device monitoring a parking area including at least a single parking space. A boundary is determined for defining at least one parking space in the parking area. A vehicle is detected in the parking area. A determination is made whether the detected vehicle is violating a parking regulation based on a position and size of the vehicle within the boundary.

摘要翻译： 用于确定停车边界违规的方法和系统包括从监视包括至少一个停车位的停车区域的图像捕获设备接收的帧序列中接收视频数据。 确定用于在停车区域中定义至少一个停车位的边界。 在停车区域内检测到车辆。 基于边界内的车辆的位置和大小来确定检测到的车辆是否违反停车规则。

公开(公告)号：US20130265423A1

公开(公告)日：2013-10-10

申请号：US13441294

申请日：2012-04-06

申请人： Edgar A. Bernal ,  Zhigang Fan ,  Yao Rong Wang ,  Robert P. Loce ,  Norman W. Zeck ,  Graham S. Pennington

发明人： Edgar A. Bernal ,  Zhigang Fan ,  Yao Rong Wang ,  Robert P. Loce ,  Norman W. Zeck ,  Graham S. Pennington

IPC分类号： H04N7/18 ,  G08B21/18

CPC分类号： G06Q30/0284 ,  G06K9/00785 ,  G07B15/02 ,  H04N7/181

摘要： A method for determining the occurrence of a short-term parking violation includes receiving video data in a sequence of frames provided by an image capture device monitoring a parking area over a duration of time. The method includes determining the presence of a vehicle captured in at least one of the sequence of frames. The method tracks the location of the vehicle across the sequence of frames. The method further determines a spatial location of the vehicle in each frame. The method includes determining spatio-temporal information describing the location of the vehicle as a function of time by associating the spatial location of the vehicle at each frame with the time instant at which the frame was captured. In response to the spatio-temporal information indicating that the vehicle becomes stationary, the method determines a duration that the vehicle is stationary using the determined spatio-temporal information of the vehicle.

摘要翻译： 用于确定短期停车违规发生的方法包括：在由持续时间监视停车区域的图像捕获装置提供的帧序列中接收视频数据。 该方法包括确定在帧序列中的至少一个中捕获的车辆的存在。 该方法跟踪车辆在整个帧序列上的位置。 该方法进一步确定车辆在每一帧中的空间位置。 该方法包括通过将每个帧处的车辆的空间位置与捕获帧的时刻相关联来确定描述车辆位置的时空信息作为时间的函数。 响应于指示车辆变得静止的时空信息，该方法使用所确定的车辆的时空信息来确定车辆静止的持续时间。

公开(公告)号：US07590282B2

公开(公告)日：2009-09-15

申请号：US11314670

申请日：2005-12-21

申请人： Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

发明人： Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

IPC分类号： G06K9/00

CPC分类号： H04N1/4015

摘要： A method and system for selecting an optimal set of S number of calibration patches for an image producing system. The method of selecting the S number of calibration patches includes acquiring a set of K number of basis eigen vectors and model parameters which represent the image producing system having G number of colors and computing the optimal set of S number of colors selected from the set of G number of colors. Each one of the computed set of S number of colors is used for one of the S number of calibration patches.

摘要翻译： 一种用于为图像产生系统选择S个校准块的最佳集合的方法和系统。 选择S个校准贴片的方法包括获取K个基本特征向量和模型参数的集合，所述基本特征向量和模型参数表示具有G个颜色的图像生成系统，并且计算从该组中选择的S个颜色的最佳集合 G色数。 所计算的S个颜色的组合中的每一个用于S个校准块中的一个。

公开(公告)号：US20120293842A1

公开(公告)日：2012-11-22

申请号：US13108235

申请日：2011-05-16

申请人： Shen-ge Wang ,  Edgar A. Bernal ,  Robert P. Loce ,  Zhigang Fan

发明人： Shen-ge Wang ,  Edgar A. Bernal ,  Robert P. Loce ,  Zhigang Fan

IPC分类号： H04N1/405

CPC分类号： H04N1/4051 ,  H04N1/4092

摘要： As set forth herein, computer-implemented methods and systems facilitate halftoning by adapting 2nd generation halftone techniques to the spatial frequency content of an image utilizing a spot function introduced in conjunction with a technique for determining seed locations, which results in halftone images exhibiting improved edge and detail rendition. A dominant orientation of pixels in an input image is employed to select a pre-generated stochastic screen used to determine the seed locations.

摘要翻译： 如本文所述，计算机实现的方法和系统通过使用结合用于确定种子位置的技术引入的斑点函数使第二代半色调技术适应于图像的空间频率内容来促进半色调，这导致半色调图像表现出改善的边缘 和细节再现。 采用输入图像中的像素的主要取向来选择用于确定种子位置的预先生成的随机屏幕。

公开(公告)号：US08970910B2

公开(公告)日：2015-03-03

申请号：US13313329

申请日：2011-12-07

申请人： Edgar A. Bernal ,  Shen-ge Wang ,  Robert P. Loce ,  Zhigang Fan

发明人： Edgar A. Bernal ,  Shen-ge Wang ,  Robert P. Loce ,  Zhigang Fan

IPC分类号： H04N1/405 ,  G06K15/00

CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  H04N1/32256

摘要： As set forth herein, computer-implemented methods and systems facilitate watermarking documents and/or images using 2nd generation stochastic halftoning. The watermark is used to spatially vary the gray level at which a frequency modulation-to-amplitude modulation transition occurs. The encoding algorithm uses as inputs a contone image and a watermark. The visibility of the watermark is controlled by the magnitude of the difference between the AM-to-FM transition threshold values.

摘要翻译： 如本文所述，计算机实现的方法和系统便于使用第二代随机半色调来水印文档和/或图像。 水印用于在空间上改变发生频率调制到幅度调制转换的灰度级。 编码算法使用连字图像和水印作为输入。 水印的可视性由AM到FM转换阈值之间的差值的大小控制。

公开(公告)号：US08467099B2

公开(公告)日：2013-06-18

申请号：US13108235

申请日：2011-05-16

申请人： Shen-ge Wang ,  Edgar A. Bernal ,  Robert P. Loce ,  Zhigang Fan

发明人： Shen-ge Wang ,  Edgar A. Bernal ,  Robert P. Loce ,  Zhigang Fan

IPC分类号： H04N1/405

CPC分类号： H04N1/4051 ,  H04N1/4092

摘要： As set forth herein, computer-implemented methods and systems facilitate halftoning by adapting 2nd generation halftone techniques to the spatial frequency content of an image utilizing a spot function introduced in conjunction with a technique for determining seed locations, which results in halftone images exhibiting improved edge and detail rendition. A dominant orientation of pixels in an input image is employed to select a pre-generated stochastic screen used to determine the seed locations.

摘要翻译： 如本文所述，计算机实现的方法和系统通过使用结合用于确定种子位置的技术引入的斑点函数使第二代半色调技术适应于图像的空间频率内容来促进半色调，这导致半色调图像表现出改善的边缘 和细节再现。 采用输入图像中的像素的主要取向来选择用于确定种子位置的预先生成的随机屏幕。