| 摘要 |
A robust video tool is provided for use in a machine vision inspection system. The robust video tool comprises a region of interest, a user interface, edge detection operations, and excluded region operations that determine a set of current-feature edge points which includes edge points detected in the region of interest and excludes edge points in an excluded region. The excluded region is determined by an excluded region generator, based on at least one previously characterized feature which is a feature characterized by using a video tool that detects the edge points of, and characterizes dimensional parameters of, the previously characterized feature. Importantly, the robust video tool features and operations are configured to allow learn mode programming on a workpiece that is either properly fabricated or improperly fabricated, and the resulting program will operate reliably on a run mode workpiece that is either properly fabricated or improperly fabricated.
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