In this chapter, the edge detection method is extended to two dimensions (2D) to measure an object's dimensions. One way to do this is to cover a two‐dimensional area with many search lines over which edge detection is performed. The measurement of an object's dimension in this manner can give accurate dimensional information since the outline of an object can be obtained by using a set of line ROIs to define 2D area. The Clamp function based on 2D edge detection is often used to detect locations that define the maximum or minimum length of a part of an object. The chapter explains how to use Vision Assistant Express to measure dimensions of objects in an image. A method to create ROI arrays is discussed. The ROI Array needs to be reformed in a way that is compatible with the ROI data contained in the Image display.
Dimension Measurement
08.12.2014
18 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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