Contour analysis is often used to detect defects in objects by analyzing the object's contours. To analyze the contour of objects, curvature profile is often used. The curvature profile is effective in detecting defects in places where the contour changes abruptly. Two different approaches may be used to compare contours: the use of fitted data with a reference contour and the use of reference template image. This chapter focuses on the method using the reference template. This method uses the contour of an object and a reference template to detect defects by comparing the two contours. The chapter presents steps that help detect defects based on template image. The defects can be detected by comparing the distance against a threshold tolerance. After finishing the selection of controls and indicators, a Vision Assistant Express VI can be created.
Dokumentinformationen
Contour Analysis
2014-12-08
18 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Ähnliche Titel
Contour Grouping Based on Contour-Skeleton Duality
| British Library Online Contents | 2009
Engineering Index Backfile | 1958
Engineering Index Backfile | 1944
NTRS | 1995