公开(公告)号：US06944324B2

公开(公告)日：2005-09-13

申请号：US09768385

申请日：2001-01-24

申请人： Don Tran ,  George W. Schurr

发明人： Don Tran ,  George W. Schurr

IPC分类号： G06T7/00 ,  G06K9/00

CPC分类号： G06T7/0004 ,  G06T7/13 ,  G06T7/181 ,  G06T7/44 ,  G06T2207/30108

摘要： A system and method for detecting multiple object conditions, such as side-by-side and overlapped objects, such as packages, on a conveyor. The system includes at least one machine vision system including at least one machine vision camera, at least one illumination subsystem and at least one machine vision computer. The illumination subsystem(s) is configured to illuminate a plurality of objects as they are conveyed past at least one field of view at an inspection station along a conveyor belt. Each machine vision camera is positioned to capture one or more images of the objects as the objects are conveyed past the field of view(s). Each machine vision computer is programmed to detect the presence of multiple object conditions by detecting and counting the number of edges appearing in an image of an object captured by one of the machine vision cameras. The method illuminates at least one object as it passes through the field of view, at which time at least one image of the object is captured. Next, each captured image is processed using a machine vision computer by windowing each parcel using a Region of Interest (ROI) and counting the number of edges appearing within the ROI. The presence of other than a single package condition is determined if the number of edges exceeds four.

摘要翻译： 一种用于在输送机上检测多个物体条件的系统和方法，例如并排和重叠物体，例如包装。 该系统包括至少一个机器视觉系统，其包括至少一个机器视觉相机，至少一个照明子系统和至少一个机器视觉计算机。 照明子系统被配置为当沿着传送带在检验站传送至少一个视野时照射多个物体。 每个机器视觉摄像机被定位成当对象被传送通过视野时捕获对象的一个​​或多个图像。 每个机器视觉计算机被编程以通过检测和计数出现在由机器视觉摄像机之一捕获的对象的图像中出现的边缘的数量来检测多个对象状况的存在。 该方法在通过视场时照亮至少一个对象，此时捕获对象的至少一个图像。 接下来，使用机器视觉计算机处理每个捕获的图像，通过使用感兴趣区域（ROI）对每个包裹进行加窗，并对出现在ROI内的边缘数进行计数。 如果边缘数超过4，则确定除了单个包装条件之外的存在。