Method and apparatus for eliminating exposure strobing effects in a
document reproduction machine
    11.
    发明授权
    Method and apparatus for eliminating exposure strobing effects in a document reproduction machine 失效
    用于消除文件再现机中的曝光选通效果的方法和装置

    公开(公告)号:US4707122A

    公开(公告)日:1987-11-17

    申请号:US910708

    申请日:1986-09-24

    IPC分类号: G03B27/54 G03G15/04 G03B27/72

    摘要: Exposure modulation (strobing) at a photoreceptor surface due to mechanical vibration of the photoconductor is eliminated by placing a filter with appropriate transmission characteristics in the optical path. The transmission characteristics necessary to achieve zero strobing include an incidence profile having a zero Fourier transform at the vibration frequencies.

    摘要翻译: 通过在光路中放置具有适当传输特性的滤光片来消除由于光电导体的机械振动导致的感光体表面处的曝光调制(选通)。 实现零选通所需的传输特性包括在振动频率下具有零傅里叶变换的入射轮廓。

    Short focal lens array with multi-magnification properties
    12.
    发明授权
    Short focal lens array with multi-magnification properties 失效
    具有多倍放大性能的短焦镜头阵列

    公开(公告)号:US4692015A

    公开(公告)日:1987-09-08

    申请号:US839667

    申请日:1986-03-14

    摘要: A short focal length lens array has a plurality of lenslets formed within the body of a photosensitive glass. The lenslets have areas which are oriented such that they tilt away from each other from the center out to the array edges. The lens array acts as a reduction or enlargement lens when reproducing objects at an object plane onto an image plane. A one or two row embodiment is disclosed suitable for incremental scanning of a document at image planes. A further full frame lens array is disclosed for providing full frame exposure of a document at various selected magnifications.

    摘要翻译: 短焦距透镜阵列具有形成在感光玻璃体内的多个小透镜。 小透镜具有取向为使得它们从中心向外倾斜到阵列边缘的区域。 当将物体平面上的物体再现到图像平面上时,透镜阵列用作缩小或放大透镜。 公开了一个或两个行实施例,适合于在图像平面上对文档的增量扫描。 公开了一种进一步的全帧透镜阵列,用于以各种选择的放大率提供文件的全帧曝光。

    Method of determining parking lot occupancy from digital camera images
    14.
    发明授权
    Method of determining parking lot occupancy from digital camera images 有权
    从数码相机图像中确定停车场占用的方法

    公开(公告)号:US09129524B2

    公开(公告)日:2015-09-08

    申请号:US13433809

    申请日:2012-03-29

    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。

    System and method of image edge growth control
    15.
    发明授权
    System and method of image edge growth control 有权
    图像边缘增长控制的系统和方法

    公开(公告)号:US08934145B2

    公开(公告)日:2015-01-13

    申请号:US12420941

    申请日:2009-04-09

    CPC分类号: G06K9/44 G06K2209/01

    摘要: Systems and methods of controlling the width of one or more image objects in a digital image are provided which determine if one or more image objects include a line or an edge. If the image includes a line, it is processed using a line width control algorithm to modify its width. If the image includes an edge, it is processed using an edge growth control module which processes it differently than a line to modify the edge in the image object.

    摘要翻译: 提供了控制数字图像中的一个或多个图像对象的宽度的系统和方法,其确定一个或多个图像对象是否包括线或边。 如果图像包含一行,则使用线宽控制算法对其进行处理以修改其宽度。 如果图像包含边缘,则使用边缘增长控制模块对其进行处理,该边缘增长控制模块不同于对图像对象边缘进行修改的线进行处理。

    Processing images to be blended with reflected images
    16.
    发明授权
    Processing images to be blended with reflected images 有权
    处理图像以与反射图像混合

    公开(公告)号:US08767254B2

    公开(公告)日:2014-07-01

    申请号:US12775019

    申请日:2010-05-06

    IPC分类号: G06F15/00

    CPC分类号: G06T11/60

    摘要: Images are prepared for blending with a reflection. Angles of incidence and angles or reflection lead to reflections of a viewer appearing to be different than actual size. Accordingly, image preparation can include scaling images of objects to be blended with a reflection to an appropriate size. For a flat specular surface the size is one half the size the object would be if the object were sized to be associated with the feature that is reflected. A viewer will focus on the reflection of the viewer at an object plane. An image associated with the specular surface will be blurred. Accordingly, the preparation can include compensating for the blurring. Preparation can also include reducing an area coverage of the image of the object to no more than about fifty percent of the region of the refection to provide space for the reflection.

    摘要翻译: 图像准备与反射混合。 入射角和角度或反射导致观察者的反射似乎与实际尺寸不同。 因此,图像准备可以包括将要与要反射的混合的对象的图像缩放到适当的大小。 对于平坦的镜面,如果对象的大小与要反映的要素相关联,则大小是对象大小的一半。 观众将集中在观察者在物体平面上的反射。 与镜面相关联的图像将会模糊。 因此,该制剂可以包括补偿模糊。 制备还可以包括将对象的图像的面积覆盖范围减小到不超过反射区域的大约百分之五十,以提供反射的空间。

    Video-based method for parking angle violation detection
    17.
    发明授权
    Video-based method for parking angle violation detection 有权
    基于视频的停车角违规检测方法

    公开(公告)号:US08737690B2

    公开(公告)日:2014-05-27

    申请号:US13461221

    申请日:2012-05-01

    IPC分类号: G06K9/00 G08G1/16

    CPC分类号: G06K9/00785

    摘要: A method and a system for determining a parking angle violation includes receiving video data from a sequence of frames taken from an image capture device monitoring a parking area. The method further includes determining a first line in a current frame where the line represents a nominal orientation of the parking area. The method includes detecting a presence of a vehicle in the parking area. The method includes determining a second line in the frame where the line represents the orientation of the detected vehicle. The method further includes computing an angle between the first and second lines. The method includes determining whether the detected vehicle is violating a parking regulation based on the computed angle.

    摘要翻译: 用于确定停车角违规的方法和系统包括从监视停车区域的图像拍摄装置获取的帧序列中接收视频数据。 该方法还包括确定当前帧中的第一行,其中该行表示停车区域的标称取向。 该方法包括在停车区域中检测车辆的存在。 该方法包括确定帧中的第二行,其中该线表示检测到的车辆的取向。 该方法还包括计算第一和第二线之间的角度。 该方法包括基于计算出的角度来确定检测到的车辆是否违反停车调节。

    METHOD FOR STOP SIGN LAW ENFORCEMENT USING MOTION VECTORS IN VIDEO STREAMS
    18.
    发明申请
    METHOD FOR STOP SIGN LAW ENFORCEMENT USING MOTION VECTORS IN VIDEO STREAMS 有权
    在视频流中使用运动矢量停止标志法执行的方法

    公开(公告)号:US20140071286A1

    公开(公告)日:2014-03-13

    申请号:US13613174

    申请日:2012-09-13

    IPC分类号: G06K9/62 H04N7/18

    摘要: A method for enforcing traffic signal compliance includes acquiring a series of temporal related image frames including a target area. Each image frame includes pixel data representative of the target area. The method includes generating one or more motion vectors between two or more of the image frames. The motion vectors are the type produced by compressing the pixel data associated with the two or more image frames. The method includes associating a cluster of motion vectors with a vehicle. The method further includes tracking a position of the vehicle across the two or more image frames. Using the tracking results, the method includes determining whether the vehicle stops in the target area. For the vehicle being determined as not stopping, the method includes signaling an occurrence of noncompliance.

    摘要翻译: 用于执行交通信号符合性的方法包括获取包括目标区域的一系列时间相关图像帧。 每个图像帧包括表示目标区域的像素数据。 该方法包括在两个或多个图像帧之间生成一个或多个运动矢量。 运动矢量是通过压缩与两个或更多个图像帧相关联的像素数据而产生的类型。 该方法包括将运动矢量群与车辆相关联。 该方法还包括跟踪车辆在两个或多个图像帧上的位置。 使用跟踪结果,该方法包括确定车辆是否停在目标区域中。 对于被确定为不停止的车辆,该方法包括发信号通知违规的发生。

    Video-based system and method for detecting exclusion zone infractions
    20.
    发明授权
    Video-based system and method for detecting exclusion zone infractions 有权
    基于视频的系统和检测排除区违规的方法

    公开(公告)号:US08666117B2

    公开(公告)日:2014-03-04

    申请号:US13441253

    申请日:2012-04-06

    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。