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公开(公告)号：US06968282B1
公开(公告)日：2005-11-22
申请号：US09576442
申请日：2000-05-22
Applicant: David A. Jackson , Michael J. Robb , Donald L. Walchuk
Inventor： David A. Jackson , Michael J. Robb , Donald L. Walchuk
IPC: G01B11/275 , G01C11/06 , G01C25/00 , G01S5/16 , G01C17/38
CPC classification number: G01C11/06 , G01B11/2755 , G01B2210/12 , G01B2210/143 , G01B2210/30 , G01B2210/303 , G01C25/00 , G01S5/163
Abstract: An apparatus and method for calibrating machine vision measuring systems that have more than one camera are disclosed. A first calibration target is mounted in a fixed relationship to a first camera of the machine vision measuring system. A third camera mounted in a fixed relationship to a second camera of the machine vision measuring system. Second and third calibration targets are mounted in a fixed relationship to one another and viewable by the first camera and by the third camera. A data processor is programmed to compute calibration of the first camera and the second camera, based on a position of the second calibration target relative to the third calibration target and a position of the first camera with respect to the third camera. The apparatus and method provide a way to continuously measure the positions of the cameras used in the measuring system to calibrate the system.
Abstract translation: 公开了一种用于校准具有多于一个照相机的机器视觉测量系统的装置和方法。 第一校准目标以与机器视觉测量系统的第一相机固定的关系安装。 与机器视觉测量系统的第二相机固定的第三相机。 第二和第三校准目标以彼此固定的关系安装并且可由第一相机和第三相机观看。 数据处理器被编程为基于第二校准目标相对于第三校准目标的位置和第一相机相对于第三相机的位置来计算第一相机和第二相机的校准。 该装置和方法提供了连续测量在测量系统中使用的相机的位置校准系统的方法。
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公开(公告)号：US06931340B2
公开(公告)日：2005-08-16
申请号：US10162554
申请日：2002-06-06
Applicant: David A. Jackson , Michael J. Robb , Donald L. Walchuk
Inventor： David A. Jackson , Michael J. Robb , Donald L. Walchuk
IPC: G01B11/275 , G01C11/06 , G01C25/00 , G01S5/16 , G01C17/38
CPC classification number: G01C11/06 , G01B11/2755 , G01B2210/12 , G01B2210/143 , G01B2210/30 , G01B2210/303 , G01C25/00 , G01S5/163
Abstract: An apparatus and method for calibrating machine vision measuring systems that have more than one camera are disclosed. A first calibration target is mounted in a fixed relationship to a first camera of the machine vision measuring system. A third camera mounted in a fixed relationship to a second camera of the machine vision measuring system. Second and third calibration targets are mounted in a fixed relationship to one another and viewable by the first camera and by the third camera. A data processor is programmed to compute calibration of the first camera and the second camera, based on a position of the second calibration target relative to the third calibration target and based on a position of the first camera with respect to the third camera. The apparatus and method provide a way to continuously measure the positions of two or more cameras used in the measuring system, and to use such measurements to calibrate the system. If the cameras move with respect to each other, their respective positions are calculated and used in subsequent measurements. The apparatus and method enable a machine vision measuring system to be used without field calibration at the time of installation.
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公开(公告)号：US06959253B2
公开(公告)日：2005-10-25
申请号：US10387575
申请日：2003-03-14
Applicant: David A. Jackson , Michael J. Robb , Donald L. Walchuk
Inventor： David A. Jackson , Michael J. Robb , Donald L. Walchuk
CPC classification number: G01S5/163 , G01B11/2755 , G01B2210/12 , G01B2210/143 , G01B2210/30 , G01B2210/303 , G01C11/06 , G01C25/00
Abstract: An apparatus and method for calibrating machine vision measuring systems that have more than one camera are disclosed. A first calibration target is mounted in a fixed relationship to a first camera of the machine vision measuring system. A third camera mounted in a fixed relationship to a second camera of the machine vision measuring system. Second and third calibration targets are mounted in a fixed relationship to one another and viewable by the first camera and by the third camera. A data processor is programmed to compute calibration of the first camera and the second camera, based on a position of the second calibration target relative to the third calibration target and based on a position of the first camera with respect to the third camera. The apparatus and method provide a way to continuously measure the positions of two or more cameras used in the measuring system, and to use such measurements to calibrate the system. If the cameras move with respect to each other, their respective positions are calculated and used in subsequent measurements. The apparatus and method enable a machine vision measuring system to be used without field calibration at the time of installation.
Abstract translation: 公开了一种用于校准具有多于一个照相机的机器视觉测量系统的装置和方法。 第一校准目标以与机器视觉测量系统的第一相机固定的关系安装。 与机器视觉测量系统的第二相机固定的第三相机。 第二和第三校准目标以彼此固定的关系安装并且可由第一相机和第三相机观看。 数据处理器被编程为基于第二校准目标相对于第三校准目标的位置并且基于第一相机相对于第三相机的位置来计算第一相机和第二相机的校准。 该装置和方法提供了连续地测量在测量系统中使用的两个或更多相机的位置的方法，并且使用这种测量来校准系统。 如果摄像机相对于彼此移动，则它们各自的位置被计算并用于随后的测量。 该装置和方法使得机器视觉测量系统在安装时不进行现场校准而被使用。
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公开(公告)号：US06871409B2
公开(公告)日：2005-03-29
申请号：US10624940
申请日：2003-07-23
Applicant: Michael J. Robb , Steve L. Glickman , Patrick Brendan O'Mahony , Manjula Gururaj , David A. Jackson , George M. Gill , Eric F. Bryan
Inventor： Michael J. Robb , Steve L. Glickman , Patrick Brendan O'Mahony , Manjula Gururaj , David A. Jackson , George M. Gill , Eric F. Bryan
IPC: G06T7/00 , G01B11/275
CPC classification number: G06T7/70 , G01B11/2755 , G01B2210/26
Abstract: In a machine vision system utilizing computer processing of image data, an imaging module incorporates the image sensor as well as pre-processing circuitry, for example, for performing a background subtraction and/or a gradient calculation. The pre-processing circuitry may also compress the image information. The host computer receives the pre-processed image data and performs all other calculations necessary to complete the machine vision application, for example, to determine one or more wheel alignment parameters of a subject vehicle. In a disclosed example useful for wheel alignment, the module also includes illumination elements, and the module circuitry provides associated camera control. The background subtraction, gradient calculation and associated compression require simpler, less expensive circuitry than for typical image pre-processing boards. Yet, the pre-processing at the imaging module substantially reduces the processing burden on the host computer when compared to machine vision implementations using direct streaming of image data to the host computer.
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公开(公告)号：US07069660B2
公开(公告)日：2006-07-04
申请号：US11039783
申请日：2005-01-24
Applicant: Michael J. Robb , Steve L. Glickman , Patrick Brendan O'Mahony , Manjula Gururaj , David A. Jackson , George M. Gill , Eric F. Bryan
Inventor： Michael J. Robb , Steve L. Glickman , Patrick Brendan O'Mahony , Manjula Gururaj , David A. Jackson , George M. Gill , Eric F. Bryan
IPC: G01B11/275
CPC classification number: G06T7/70 , G01B11/2755 , G01B2210/26
Abstract: In a machine vision system utilizing computer processing of image data, an imaging module incorporates the image sensor as well as pre-processing circuitry, for example, for performing a background subtraction and/or a gradient calculation. The pre-processing circuitry may also compress the image information. The host computer receives the pre-processed image data and performs all other calculations necessary to complete the machine vision application, for example, to determine one or more wheel alignment parameters of a subject vehicle. In a disclosed example useful for wheel alignment, the module also includes illumination elements, and the module circuitry provides associated camera control. The background subtraction, gradient calculation and associated compression require simpler, less expensive circuitry than for typical image pre-processing boards. Yet, the pre-processing at the imaging module substantially reduces the processing burden on the host computer when compared to machine vision implementations using direct streaming of image data to the host computer.
Abstract translation: 在利用图像数据的计算机处理的机器视觉系统中，成像模块包括图像传感器以及预处理电路，例如用于执行背景减法和/或梯度计算。 预处理电路还可以压缩图像信息。 主计算机接收预处理的图像数据并执行完成机器视觉应用所需的所有其它计算，例如确定本车辆的一个或多个车轮定位参数。 在用于车轮定位的公开示例中，该模块还包括照明元件，并且模块电路提供相关联的摄像机控制。 背景减法，梯度计算和相关压缩需要比典型的图像预处理板更简单，更便宜的电路。 然而，与使用图像数据的直接流传输到主计算机的机器视觉实现相比，成像模块的预处理大大降低了主机计算机上的处理负担。
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公开(公告)号：US07643915B2
公开(公告)日：2010-01-05
申请号：US10628044
申请日：2003-07-26
Applicant: David A. Jackson , Michael J. Robb , Patrick B. O'Mahony
Inventor： David A. Jackson , Michael J. Robb , Patrick B. O'Mahony
IPC: G01M17/00
CPC classification number: G01B21/22 , G01B11/275 , G01B11/2755 , G01B2210/26
Abstract: A diagnostic system allows a service technician to diagnose a malfunction that occurs during operation of a wheel alignment system after the malfunction has occurred and is no longer apparent. The system, which includes one or more cameras for gathering images of the alignment, gathers information in real time about the alignment of a plurality of wheels. The images include reflections from a target mounted on each wheel, and a processing system in communication with the cameras receives the images and generates analysis data based on them, the analysis data providing an analysis of the alignment of the wheels. A memory device stores the images and the analysis data, and a storage control causes the memory device to store the images and the analysis data in response to activation of the storage control by the operator during the occurrence of the malfunction. A display device in communication with the memory device selectively displays the images and the analysis data, and a play-back control causes the display device to selectively display the images and the analysis data to the service technician in response to activation of the play-back control after the occurrence of the malfunction.
Abstract translation: 诊断系统允许维修技术人员诊断在故障发生之后在车轮定位系统的操作期间发生的故障，并且不再明显。 该系统包括用于收集对准图像的一个或多个相机，用于实时地收集关于多个车轮对准的信息。 图像包括来自安装在每个车轮上的目标的反射，并且与相机通信的处理系统接收图像并基于它们生成分析数据，分析数据提供对轮的对准的分析。 存储装置存储图像和分析数据，并且存储控制使存储装置响应于操作者在发生故障期间的存储控制的激活而存储图像和分析数据。 与存储装置通信的显示装置选择性地显示图像和分析数据，并且回放控制使得显示装置响应于播放的激活而选择性地向服务技术人员显示图像和分析数据 发生故障后进行控制。
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公开(公告)号：US20140070474A1
公开(公告)日：2014-03-13
申请号：US13607191
申请日：2012-09-07
Applicant: Brian K. GRAY , Rodney Harrell , David A. Jackson , Ronald D. Swayne , Ronald D. Edgmon
Inventor： Brian K. GRAY , Rodney Harrell , David A. Jackson , Ronald D. Swayne , Ronald D. Edgmon
Abstract: A wheel clamp attaches to a vehicle wheel for performing a wheel alignment on the vehicle. The wheel clamp has a body for supporting a target or measuring head, and three extendable arms slidably mounted to the body. Each arm has a gripping portion for gripping the tire's tread surface and a sidewall contact portion for contacting the tire sidewall such that the clamp body is substantially parallel to the vehicle wheel and the wheel clamp has no contact with the rim. A self-centering linkage has enmeshed gears and link arms respectively connecting the arms to the gears, such that when the gears are rotated, the arms simultaneously proportionally slide relative to the clamp body, so the gripping portions of the arms engage and grip the tire tread surface and tighten the clamp onto the tire, while the sidewall contact portions of the arms contact the tire sidewall.
Abstract translation: 轮夹附接到车轮以在车辆上执行车轮定位。 轮夹具有用于支撑目标或测量头的主体，以及可滑动地安装到主体的三个可伸展臂。 每个臂具有用于夹紧轮胎的胎面表面的抓握部分和用于接触轮胎侧壁的侧壁接触部分，使得夹具主体基本上平行于车轮并且轮夹与轮缘没有接触。 自定心联动装置将齿轮和连接臂分别连接到齿轮上，使得当齿轮旋转时，臂同时相对于夹具体成比例地滑动，因此臂的夹持部分接合并夹紧轮胎 胎面表面并将夹紧件紧固到轮胎上，同时臂的侧壁接触部分接触轮胎侧壁。
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公开(公告)号：US08401236B2
公开(公告)日：2013-03-19
申请号：US13418091
申请日：2012-03-12
Applicant: Thomas L. Kassouf , Stephen L. Glickman , David A. Jackson
Inventor： Thomas L. Kassouf , Stephen L. Glickman , David A. Jackson
IPC: G06K9/00
CPC classification number: G01B11/275 , G01B11/2755 , G01B2210/143 , G01B2210/26 , G01B2210/30 , G01B2210/306
Abstract: A vehicle wheel alignment method and system is provided. A three-dimensional target is attached to a vehicle wheel known to be in alignment. The three-dimensional target has multiple target elements thereon, each of which has known geometric characteristics and 3D spatial relationship with one another.
Abstract translation: 提供车轮定位方法和系统。 三维目标附着在已知对准的车辆车轮上。 三维目标在其上具有多个目标元素，每个目标元素具有彼此已知的几何特征和3D空间关系。
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公开(公告)号：US08104185B2
公开(公告)日：2012-01-31
申请号：US12881824
申请日：2010-09-14
Applicant: Brian K. Gray , David A. Jackson , Ronald D. Swayne
Inventor： Brian K. Gray , David A. Jackson , Ronald D. Swayne
IPC: G01B5/255
CPC classification number: G01B5/255
Abstract: A lightweight wheel clamp assembly is provided for attaching to a vehicle wheel for performing a wheel alignment on the vehicle. The assembly comprises a first bracket for engaging the vehicle wheel; a second bracket for engaging the vehicle wheel; a handle rotatably mounted to the second bracket; and a rod having a threaded portion and an attachment portion near a first end of the rod. The first bracket is attachable to the attachment portion of the rod, and the handle is threaded to engage the threaded portion of the rod, such that when a user grasps and rotates the handle, a distance between the first and second brackets can be adjusted to rigidly attach the wheel clamp assembly to the vehicle wheel.
Abstract translation: 提供了一种轻便的轮夹组合件，用于附接到车轮以在车辆上执行车轮定位。 组件包括用于接合车轮的第一支架; 用于接合车轮的第二支架; 可旋转地安装到第二支架的手柄; 以及在杆的第一端附近具有螺纹部分和附接部分的杆。 第一支架可附接到杆的附接部分，并且手柄被螺纹接合到杆的螺纹部分，使得当使用者握住并旋转手柄时，可以将第一和第二托架之间的距离调整为 将轮夹组件刚性地连接到车轮上。
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公开(公告)号：US20110185584A1
公开(公告)日：2011-08-04
申请号：US13083964
申请日：2011-04-11
Applicant: Thomas L. KASSOUF , Stephen L. Glickman , David A. Jackson
Inventor： Thomas L. KASSOUF , Stephen L. Glickman , David A. Jackson
IPC: G01B5/255
CPC classification number: G01B11/275 , G01B11/2755 , G01B2210/143 , G01B2210/26 , G01B2210/30 , G01B2210/306
Abstract: A vehicle wheel alignment method and system is provided. A three-dimensional target is attached to a vehicle wheel known to be in alignment. The three-dimensional target has multiple target elements thereon, each of which has known geometric characteristics and 3D spatial relationship with one another.
Abstract translation: 提供车轮定位方法和系统。 三维目标附着在已知对准的车辆车轮上。 三维目标在其上具有多个目标元素，每个目标元素具有彼此已知的几何特征和3D空间关系。
