公开(公告)号：US07660460B2

公开(公告)日：2010-02-09

申请号：US11274638

申请日：2005-11-15

申请人： Wencheng Wu ,  Edul N. Dalal ,  Zhigang Fan

发明人： Wencheng Wu ,  Edul N. Dalal ,  Zhigang Fan

IPC分类号： G06K9/00 ,  G06K9/34

CPC分类号： H04N1/603 ,  G06K9/00449

摘要： In preparation for rendering respective portions of a document via a respective plurality of engines, objects within the document are identified and characterized. A determination is made as to whether gamut variations between the engines might result in objectionable variations in the appearance of rendered versions of identified objects having similar characteristics. For those objects within the document for which the determination is made that variations might be objectionable, a target gamut is selected to be an intersection gamut of the engines to be used to render the document. For those objects within the document for which the determination is made that variations would be unobjectionable, the target gamut is selected to be that of selected individual engines. A system for selecting target gamuts for objects within a document can include an object identifier, a characteristic identifier and a gamut selector.

摘要翻译： 在准备通过相应的多个引擎呈现文档的各个部分时，识别和表征文档内的对象。 确定发动机之间的色域变化是否可能导致具有相似特征的识别对象的渲染版本的外观的令人反感的变化。 对于确定变化可能令人反感的文档中的那些对象，目标色域被选择为用于呈现文档的引擎的交叉色域。 对于确定变化是无反应的文档中的那些对象，目标色域被选择为所选择的各个引擎的目标色域。 用于为文档中的对象选择目标色域的系统可以包括对象标识符，特征标识符和色域选择器。

公开(公告)号：US20070110301A1

公开(公告)日：2007-05-17

申请号：US11274638

申请日：2005-11-15

申请人： Wencheng Wu ,  Edul Dalal ,  Zhigang Fan

发明人： Wencheng Wu ,  Edul Dalal ,  Zhigang Fan

IPC分类号： G06K9/00

CPC分类号： H04N1/603 ,  G06K9/00449

摘要： In preparation for rendering respective portions of a document via a respective plurality of engines, objects within the document are identified and characterized. A determination is made as to whether gamut variations between the engines might result in objectionable variations in the appearance of rendered versions of identified objects having similar characteristics. For those objects within the document for which the determination is made that variations might be objectionable, a target gamut is selected to be an intersection gamut of the engines to be used to render the document. For those objects within the document for which the determination is made that variations would be unobjectionable, the target gamut is selected to be that of selected individual engines. A system for selecting target gamuts for objects within a document can include an object identifier, a characteristic identifier and a gamut selector.

摘要翻译： 在准备通过相应的多个引擎呈现文档的各个部分时，识别和表征文档内的对象。 确定发动机之间的色域变化是否可能导致具有相似特征的识别对象的渲染版本的外观的令人反感的变化。 对于确定变化可能令人反感的文档中的那些对象，目标色域被选择为用于呈现文档的引擎的交叉色域。 对于确定变化是无反应的文档中的那些对象，目标色域被选择为所选择的各个引擎的目标色域。 用于为文档中的对象选择目标色域的系统可以包括对象标识符，特征标识符和色域选择器。

公开(公告)号：US09052329B2

公开(公告)日：2015-06-09

申请号：US13463769

申请日：2012-05-03

申请人： Zhigang Fan ,  Wencheng Wu

发明人： Zhigang Fan ,  Wencheng Wu

IPC分类号： G06K9/00 ,  G01P3/38 ,  G01P3/68 ,  G06T7/00 ,  G06T7/20

CPC分类号： G01P3/38 ,  G01P3/68 ,  G06T7/246 ,  G06T7/50 ,  G06T7/74 ,  G06T2207/10016 ,  G06T2207/30236 ,  G06T2207/30241

摘要： In some aspects of the present application, a computer-implemented method for determining the speed of a motor vehicle in a vehicle speed detection system is disclosed. The method can include receiving a plurality of images of a motor vehicle traveling on a road, each of the images being separated in time by a known interval; determining, for each of at least two of the images, a point of contact where a same tire of the vehicle contacts a surface of the road based, in part, on one or more identified features of the vehicle in one or more of the plurality of images; and using the points of contact and the time interval separations to calculate a speed at which the vehicle is traveling on the road.

摘要翻译： 在本申请的一些方面，公开了一种用于确定车辆速度检测系统中的机动车辆的速度的计算机实现的方法。 该方法可以包括接收在道路上行驶的机动车辆的多个图像，每个图像在时间上分开已知的间隔; 为所述图像中的至少两个图像中的每一个确定所述车辆的相同轮胎与所述道路的表面接触的接触点，所述接触点部分地基于所述车辆的一个或多个中的一个或多个识别的特征 的图像; 并且使用接触点和时间间隔分离来计算车辆在道路上行驶的速度。

公开(公告)号：US20130294643A1

公开(公告)日：2013-11-07

申请号：US13463769

申请日：2012-05-03

申请人： Zhigang Fan ,  Wencheng Wu

发明人： Zhigang Fan ,  Wencheng Wu

IPC分类号： G06K9/00

CPC分类号： G01P3/38 ,  G01P3/68 ,  G06T7/246 ,  G06T7/50 ,  G06T7/74 ,  G06T2207/10016 ,  G06T2207/30236 ,  G06T2207/30241

摘要： In some aspects of the present application, a computer-implemented method for determining the speed of a motor vehicle in a vehicle speed detection system is disclosed. The method can include receiving a plurality of images of a motor vehicle traveling on a road, each of the images being separated in time by a known interval; determining, for each of at least two of the images, a point of contact where a same tire of the vehicle contacts a surface of the road based, in part, on one or more identified features of the vehicle in one or more of the plurality of images; and using the points of contact and the time interval separations to calculate a speed at which the vehicle is traveling on the road.

摘要翻译： 在本申请的一些方面，公开了一种用于确定车辆速度检测系统中的机动车辆的速度的计算机实现的方法。 该方法可以包括接收在道路上行驶的机动车辆的多个图像，每个图像在时间上分开已知的间隔; 为所述图像中的至少两个图像中的每一个确定所述车辆的相同轮胎与所述道路的表面接触的接触点，所述接触点部分地基于所述车辆的一个或多个中的一个或多个识别的特征 的图像; 并且使用接触点和时间间隔分离来计算车辆在道路上行驶的速度。

公开(公告)号：US09848105B1

公开(公告)日：2017-12-19

申请号：US09080700

申请日：1998-05-18

申请人： Zhigang Fan

发明人： Zhigang Fan

IPC分类号： H04N1/405 ,  H04N1/60 ,  G06K15/02

CPC分类号： H04N1/4052 ,  G06K15/1881 ,  H04N1/52 ,  H04N1/6027

摘要： A method of color image processing for quantizing output includes obtaining an input for an object pixel which is represented by a vector in a first color space. A modified input equal to the input plus a sum of errors from other pixels in a neighborhood of the object pixel is generated. For each color component in the first color space, where corresponding color components of the modified input are located with respect to a preset range is determined. If the modified input's color component is greater than the preset range, then that color component for an output is determined to be on; if less than the preset range, then that color component for the output is determine to be off; and, if within the preset range, then that color component for the output is determined to be unknown. A transformed modified input is mapped to a perceptual color space when any color component of the output is unknown. Colors consistent with color components of the output that have already been determined are also mapped to the perceptual color space. The color in the perceptual color space that lies closest to the transformed modified input is chosen. An output in the first color space having color components on and off is generated consistent with the determinations and/or choices made. Error for the object pixel is then calculated as the difference between the output and the modified input.

公开(公告)号：US20160286114A1

公开(公告)日：2016-09-29

申请号：US15081281

申请日：2016-03-25

申请人： Zhigang Fan

发明人： Zhigang Fan

IPC分类号： H04N5/235 ,  H04N5/232 ,  G02B7/28 ,  G06T5/00 ,  G06T5/20 ,  G06K9/46 ,  G06K9/62 ,  G06T7/00

CPC分类号： H04N5/2352 ,  G02B7/285 ,  G06K9/4661 ,  G06K9/6267 ,  H04N5/23212

摘要： A method, a device and a computer readable for automatically identifying a Christmas tree scene and setting a camera's focus and/or exposure parameters in a way that yields images with high image quality. The Christmas tree scene identification can be performed by segmenting the image into bright and dark regions, identifying the light objects, collecting the statistics of the light objects, and classifying the scene based on the statistics of the light objects, or by collecting the pixel value statistics for the image, and classifying the scene based on the statistics of the pixel values, or by collecting the pixel value statistics for the image, filtering the image, collecting the pixel value statistics for the filtered image, and classifying the scene by comparing the statistics of the pixel values before and after filtering. The focus and exposure settings can be adjusted based on the Christmas tree scene identification results. For Christmas tree scenes, the exposure can be set based on a value that is adjusted upwards from the mean luminance of the image, or on a value that is calculated from the top luminance value. The focus can be set by identifying the lights in the image, and minimizing the light size in the image.

摘要翻译： 用于自动识别圣诞树场景并以产生具有高图像质量的图像的方式设置相机的焦点和/或曝光参数的方法，设备和计算机。 可以通过将图像分割成明暗区域，识别光对象，收集光对象的统计数据和基于光对象的统计信息对场景进行分类，或者通过收集像素值来执行圣诞树场景识别 统计图像，并根据像素值的统计信息对场景进行分类，或者通过收集图像的像素值统计信息，过滤图像，收集滤波图像的像素值统计数据，并对场景进行分类比较 过滤前后像素值的统计。 焦点和曝光设置可以根据圣诞树场景识别结果进行调整。 对于圣诞树场景，可以基于从图像的平均亮度向上调整的值或从顶部亮度值计算的值来设置曝光。 可以通过识别图像中的光，并最小化图像中的光线大小来设置焦点。

公开(公告)号：US20160275345A1

公开(公告)日：2016-09-22

申请号：US14663538

申请日：2015-03-20

申请人： Zhigang Fan

发明人： Zhigang Fan

IPC分类号： G06K9/00

CPC分类号： G06K9/00442 ,  G06K2009/363

摘要： A method, a mobile image capturing device and a computer readable for capturing and processing both document and non-document images in optimized manners. The present invention contains steps: a) determining if an image to be captured is a document image or a non-document image; b) capturing and processing said image with methods and parameters optimized for document images if said determination is document; c) capturing and processing said image with methods and parameters optimized for non-document images if said determination is non-document.

公开(公告)号：US09367966B2

公开(公告)日：2016-06-14

申请号：US13461161

申请日：2012-05-01

申请人： Zhigang Fan ,  Yao Rong Wang

发明人： Zhigang Fan ,  Yao Rong Wang

IPC分类号： G07B15/02 ,  G06K9/00 ,  H04N7/18

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

摘要： A method and a system for automating parking payment includes receiving video data in a sequence of frames provided by a video capture device observing a parking area. The method includes detecting a vehicle in the parking area using the video data. The method further includes receiving information of a vehicle in the parking area provided by a user device. The method includes comparing the characteristics of the detected vehicle with the information from the user device. In response to the characteristics of the detected vehicle being a match to the information sent from the user device, the method includes tracking the detected vehicle across the sequence of frames. The method includes computing a duration that the detected vehicle remains stationary using the tracking. The method includes computing an amount for charging the associated user device based on the duration.

摘要翻译： 一种用于自动化停车支付的方法和系统包括以观看停车区域的视频捕获设备提供的帧序列接收视频数据。 该方法包括使用视频数据来检测停车区域中的车辆。 该方法还包括在由用户设备提供的停车区域中接收车辆的信息。 该方法包括将检测到的车辆的特征与来自用户设备的信息进行比较。 响应于检测到的车辆的特征与从用户设备发送的信息的匹配，该方法包括在帧序列之间跟踪检测到的车辆。 该方法包括使用跟踪来计算检测到的车辆保持静止的持续时间。 该方法包括基于持续时间计算用于对相关联的用户设备计费的量。

公开(公告)号：USD744059S1

公开(公告)日：2015-11-24

申请号：US29497143

申请日：2014-07-21

申请人： Zhigang Fan ,  Zhineng Fan

设计人： Zhigang Fan ,  Zhineng Fan

公开(公告)号：US08807442B2

公开(公告)日：2014-08-19

申请号：US13552177

申请日：2012-07-18

申请人： Zhigang Fan ,  Yonghui Zhao ,  Hengzhou Ding

发明人： Zhigang Fan ,  Yonghui Zhao ,  Hengzhou Ding

IPC分类号： G06K19/06

CPC分类号： G06K19/06103

摘要： A method and apparatus are disclosed for embedding a two-dimensional machine-readable code into the background of a document in an aesthetically pleasing manner. The objects (picture, graphics, text, etc.) in a document image are first segmented from the background. A location for embedding the barcode is determined. A texture image is created by replicating the barcode to a size that covers the entire image. A modulation index map is generated from the segmentation results. The original image is modulated to produce the output image based on the texture image and the modulation index map.

摘要翻译： 公开了一种用于以美观的方式将二维机器可读代码嵌入到文档的背景中的方法和装置。 文档图像中的对象（图片，图形，文本等）首先从背景分割。 确定用于嵌入条形码的位置。 通过将条形码复制到覆盖整个图像的大小来创建纹理图像。 从分割结果生成调制索引图。 原始图像被调制以基于纹理图像和调制索引图生成输出图像。