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11. 发明授权

US06718074B1 Method and apparatus for inspection for under-resolved features in digital images 失效
标题翻译：数字图像中未解决特征的检查方法和装置
公开(公告)号：US06718074B1
公开(公告)日：2004-04-06
申请号：US09585633
申请日：2000-06-02
申请人： Paul Dutta-Choudhury , Joe Scola , Brad Safford , Igor Reyzin
发明人： Paul Dutta-Choudhury , Joe Scola , Brad Safford , Igor Reyzin
IPC分类号： G06K900
CPC分类号： G06T7/0012 , G06T3/403 , G06T7/0004
摘要： A machine vision inspection system and method that increase the resolution of object image-data without physically manipulating the physical optics of cameras used during inspection. The exemplary embodiment of the invention provides a system and method that perform what may be characterized as a digital zoom. Using this digital zoom, the resolution of object image-data provided by a camera may be artificially increased. Moreover, in accordance with the exemplary embodiment of the invention, a determination may be made regarding whether portions of the object image-data are under-resolved, and based on that determination, a local digital zoom may be performed on that under-resolved portion of object image-data to increase the resolution of that portion of object image-data. Additionally, the resulting portion of the object image-data with increased image resolution may be scaled-back, such that the portion of increased resolution object image-data may be combined with the other object image-data to provide a faithful, scaled representation of the original sample-object and/or sample-object feature.
摘要翻译：一种机器视觉检查系统和方法，可以在物理上操纵检查期间使用的相机的物理光学元件，增加对象图像数据的分辨率。本发明的示例性实施例提供了执行可以被表征为数字变焦的系统和方法。使用该数字变焦，可以人为地增加由相机提供的对象图像数据的分辨率。此外，根据本发明的示例性实施例，可以确定对象图像数据的部分是否未被分解，并且基于该确定，可以对未解决部分执行局部数字变焦的对象图像数据，以增加该部分对象图像数据的分辨率。另外，具有增加的图像分辨率的对象图像数据的所得部分可以缩小，使得增加的分辨率对象图像数据的部分可以与其他对象图像数据组合以提供忠实的，缩放的原始样本对象和/或样本对象特征。

12. 发明授权

US5796868A Object edge point filtering system for machine vision 失效
标题翻译：用于机器视觉的物体边缘点过滤系统
公开(公告)号：US5796868A
公开(公告)日：1998-08-18
申请号：US579958
申请日：1995-12-28
申请人： Paul Dutta-Choudhury
发明人： Paul Dutta-Choudhury
IPC分类号： G06T5/00 , G06K9/48 , G06K9/00 , G06K9/40 , G06K9/52
CPC分类号： G06T7/0083 , G06T2207/10016 , G06T2207/20061 , G06T2207/20081
摘要： A system and method for filtering edge points in an edge image represented by an array of edge image coordinates each having an edge point magnitude. An edge map array is formed of edge map coordinates each assigned one of three edge indicator values indicative of the relationship between the corresponding edge image coordinate edge point magnitude and two preselected edge magnitude thresholds. An output edge point array is formed of output edge point coordinates to indicate those edge image coordinates and corresponding object image pixels that are validated by the system as being associated with likely object edge points. This is accomplished by constructing a first address stack to track memory addresses at which edge map coordinate values are stored and constructing a second address stack to track memory addresses at which output edge point coordinate values are stored as the output edge point array is constructed. Selected output edge point coordinates are assigned with a preselected edge point value by first scanning the edge map array for edge coordinates assigned the first preselected edge indicator value and, using the stacks to keep track of the addresses of these coordinates, neighboring edge map coordinates are examined for any edge map coordinates assigned with either the first or second preselected edge indicator values. The address of edge map coordinates found to be assigned with either the first or second preselected edge indicator values are then tracked by the stacks.
摘要翻译：一种用于过滤边缘图像中的边缘点的系统和方法，所述边缘图像由每个具有边缘点幅度的边缘图像坐标阵列表示。边缘地图阵列由边缘地图坐标形成，每个边缘地图坐标分别指示相应的边缘图像坐标边缘点大小和两个预选边缘幅度阈值之间的关系的三个边缘指示符值之一。输出边缘点阵列由输出边缘点坐标形成，以指示由系统验证为与可能的对象边缘点相关联的那些边缘图像坐标和对应的对象图像像素。这是通过构建第一地址堆栈来跟踪存储地图坐标值的存储器地址，并且构建第二地址堆栈来跟踪构建输出边缘点阵列时存储输出边缘点坐标值的存储器地址。所选择的输出边缘点坐标通过首先扫描边缘图阵列以分配第一预先选择的边缘指示符值的边缘坐标分配预选边缘点值，并且使用堆栈来跟踪这些坐标的地址，相邻边缘图坐标是检查分配有第一或第二预选边缘指示符值的任何边缘地图坐标。发现被分配有第一或第二预选边缘指示符值的边缘地图坐标的地址然后被堆栈跟踪。

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