公开(公告)号：US20190265027A1

公开(公告)日：2019-08-29

申请号：US16056348

申请日：2018-08-06

申请人： Cognex Corporation

发明人： Robert A. Wolff ,  Michael C. Moed ,  Mikhail Akopyan ,  Robert Tremblay ,  Willard Foster ,  Aaron S. Wallack

IPC分类号： G01B11/25 ,  G06T5/00 ,  G06K9/32 ,  G06T7/73 ,  G01B11/02 ,  G06K9/20

摘要： This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.

公开(公告)号：US20170299380A1

公开(公告)日：2017-10-19

申请号：US15456676

申请日：2017-03-13

申请人： Cognex Corporation

发明人： Robert A. Wolff ,  Michael C. Moed ,  Mikhail Akopyan ,  Robert Tremblay ,  Willard Foster ,  Aaron S. Wallack

IPC分类号： G01B11/25 ,  G01B11/02 ,  G06T5/00 ,  G06T7/74 ,  G06K9/32 ,  G06K9/20 ,  G05B15/02

CPC分类号： G01B11/2522 ,  G01B11/026 ,  G05B15/02 ,  G06K9/2081 ,  G06K9/3233 ,  G06T5/005 ,  G06T7/74 ,  G06T2200/24 ,  G06T2207/20072

摘要： This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.

公开(公告)号：US10041786B2

公开(公告)日：2018-08-07

申请号：US15456676

申请日：2017-03-13

申请人： Cognex Corporation

发明人： Robert A. Wolff ,  Michael C. Moed ,  Mikhail Akopyan ,  Robert Tremblay ,  Willard Foster ,  Aaron S. Wallack

IPC分类号： G06K9/00 ,  G01B11/25 ,  G01B11/02 ,  G06T7/73 ,  G06K9/32 ,  G06K9/20 ,  G06T5/00 ,  G05B15/02

摘要： This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.

公开(公告)号：US10775160B2

公开(公告)日：2020-09-15

申请号：US16056348

申请日：2018-08-06

申请人： Cognex Corporation

发明人： Robert A. Wolff ,  Michael C. Moed ,  Mikhail Akopyan ,  Robert Tremblay ,  Willard Foster ,  Aaron S. Wallack

IPC分类号： G01B11/25 ,  G01B11/02 ,  G06T7/73 ,  G06K9/20 ,  G06K9/32 ,  G06T5/00 ,  G05B15/02

摘要： This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.

公开(公告)号：US09605950B2

公开(公告)日：2017-03-28

申请号：US14149774

申请日：2014-01-07

申请人： Cognex Corporation

发明人： Robert A. Wolff ,  Michael C. Moed ,  Mikhail Akopyan ,  Robert Tremblay ,  Willard Foster ,  Aaron S. Wallack

IPC分类号： G06K9/00 ,  G01B11/25 ,  G01B11/02

CPC分类号： G01B11/2522 ,  G01B11/026 ,  G05B15/02 ,  G06K9/2081 ,  G06K9/3233 ,  G06T5/005 ,  G06T7/74 ,  G06T2200/24 ,  G06T2207/20072

摘要： This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.

公开(公告)号：US09554094B1

公开(公告)日：2017-01-24

申请号：US13796726

申请日：2013-03-12

申请人： Cognex Corporation

发明人： Gilbert Chiang ,  Robert Tremblay

IPC分类号： H04N7/18

CPC分类号： H04N7/18 ,  G06T7/0004 ,  G06T2207/30141

摘要： A system and method for detecting and/or determining the existence of displacement of a substrate with respect to a surrounding object uses a laser line that is free of contact with the object and that is received by an image sensor. A processor reads the line information in a series of image frames, and generates a range image with height information. The height information is provided to a 2D map. Differences between adjacent height measurements, and averages, are computed. Vision system tools are used to accurately locate features in the image and these are aligned with the height information. The height differences are interpreted, with missing height data due, for example, to specularity in the image being approximated. The height differences are compared to predetermined height parameters relative to identified locations, for example, wells, in the object to determine whether a substrate is displaced.

摘要翻译： 用于检测和/或确定衬底相对于周围物体的位移的存在的系统和方法使用与物体无接触并由图像传感器接收的激光线。 处理器读取一系列图像帧中的行信息，并生成具有高度信息的范围图像。 高度信息被提供给2D地图。 计算相邻高度测量值和平均值之间的差异。 视觉系统工具用于准确定位图像中的特征，并与高度信息对齐。 解释高度差异，缺少高度数据，例如由于近似于图像中的镜面反射。 将高度差与相对于物体中的识别位置（例如，井）的预定高度参数进行比较，以确定衬底是否被移位。

公开(公告)号：US20140177979A1

公开(公告)日：2014-06-26

申请号：US14106568

申请日：2013-12-13

申请人： Cognex Corporation

发明人： Steven M. Whitman ,  Robert Tremblay ,  Carroll McNeill Arbogast, JR.

IPC分类号： G06F3/0487 ,  G06F3/0484

CPC分类号： G06F3/04847 ,  G01N21/90 ,  G05B2219/32128 ,  G06F3/0481 ,  G06F3/04842

摘要： A graphical user interface (GUI) display and GUI-based system for displaying and controlling vision system operating parameters of a contour sensor comprises an automated region of interest graphic image applied to a discrete region of a selected image in response to a single click by a user at the discrete region of the selected image, the selected image selected from a window on the GUI display containing a plurality of captured images of the object. At least one automated operating parameter is generated automatically in response to the single click by the user at the discrete region of the selected image to determine whether a contour of interest is in the automated ROI graphic image. The GUI also provides a contour graphic image that outlines the contour of interest to demonstrate whether the contour of interest is in (present or at the correct position within) the automated ROI graphic image.

摘要翻译： 用于显示和控制轮廓传感器的视觉系统操作参数的图形用户界面（GUI）显示器和基于GUI的系统包括响应于单个点击由应用于选定图像的离散区域的自动感兴趣区域图形图像 用户在所选图像的离散区域处，从包含对象的多个捕获图像的GUI显示器上的窗口中选择的所选图像。 响应于用户在所选图像的离散区域的单击，自动生成至少一个自动操作参数，以确定感兴趣的轮廓是否在自动化ROI图形图像中。 GUI还提供轮廓图形，其概述了感兴趣的轮廓，以证明感兴趣的轮廓是否在自动ROI图形图像中（存在于或处于正确位置）。

公开(公告)号：US09292187B2

公开(公告)日：2016-03-22

申请号：US14106568

申请日：2013-12-13

申请人： Cognex Corporation

发明人： Steven M. Whitman ,  Robert Tremblay ,  Carroll McNeill Arbogast, Jr.

IPC分类号： G06F3/0484 ,  G06F3/0481 ,  G01N21/90

CPC分类号： G06F3/04847 ,  G01N21/90 ,  G05B2219/32128 ,  G06F3/0481 ,  G06F3/04842

摘要： A graphical user interface (GUI) display and GUI-based system for displaying and controlling vision system operating parameters of a contour sensor comprises an automated region of interest graphic image applied to a discrete region of a selected image in response to a single click by a user at the discrete region of the selected image, the selected image selected from a window on the GUI display containing a plurality of captured images of the object. At least one automated operating parameter is generated automatically in response to the single click by the user at the discrete region of the selected image to determine whether a contour of interest is in the automated ROI graphic image. The GUI also provides a contour graphic image that outlines the contour of interest to demonstrate whether the contour of interest is in (present or at the correct position within) the automated ROI graphic image.

摘要翻译： 用于显示和控制轮廓传感器的视觉系统操作参数的图形用户界面（GUI）显示器和基于GUI的系统包括响应于单个点击由应用于选定图像的离散区域的自动感兴趣区域图形图像 用户在所选图像的离散区域处，从包含对象的多个捕获图像的GUI显示器上的窗口中选择的所选图像。 响应于用户在所选图像的离散区域的单击，自动生成至少一个自动操作参数，以确定感兴趣的轮廓是否在自动化ROI图形图像中。 GUI还提供轮廓图形，其概述了感兴趣的轮廓，以证明感兴趣的轮廓是否在自动ROI图形图像中（存在于或处于正确位置）。

公开(公告)号：US20140347473A1

公开(公告)日：2014-11-27

申请号：US14149774

申请日：2014-01-07

申请人： Cognex Corporation

发明人： Robert A. Wolff ,  Michael C. Moed ,  Mikhail Akopyan ,  Robert Tremblay ,  Willard Foster ,  Aaron S. Wallack

IPC分类号： H04N7/18

CPC分类号： G01B11/2522 ,  G01B11/026 ,  G05B15/02 ,  G06K9/2081 ,  G06K9/3233 ,  G06T5/005 ,  G06T7/74 ,  G06T2200/24 ,  G06T2207/20072

摘要： This invention provides a system for measuring displacement of an object surface having a displacement sensor that projects a line on the object surface and receives light from the projected line at an imager in a manner defines a plurality of displacement values in a height direction. A vision system processor operates on rows of imager pixels to determine a laser line center in columns of imager pixels in each of a plurality of regions of interest. Each region of interest defines a plurality of rows that correspond with expected locations of the projected line on the object surface. A GUI can be used to establish the regions. In further embodiments, the system generates grayscale images with the imager. These grayscale images can be compared to a generated height image to compensate for contrast-induced false height readings. Imager pixels can be compared to a reference voltage to locate the line.

摘要翻译： 本发明提供了一种用于测量具有位移传感器的物体表面的位移的系统，该位移传感器在物体表面上突出一条线，并且在成像器处以在高度方向上限定多个位移值的方式从投影线接收光。 视觉系统处理器对成像器像素行进行操作，以确定多个感兴趣区域中的每一个中的成像器像素的列中的激光线中心。 每个感兴趣区域定义与对象表面上的投影线的预期位置相对应的多个行。 可以使用GUI来建立区域。 在另外的实施例中，系统利用成像器生成灰度图像。 这些灰度图像可以与生成的高度图像进行比较，以补偿对比度引起的假高度读数。 可以将成像器像素与参考电压进行比较以定位线。