IMAGING-BASED METHODS FOR DETECTING AND MEASURING DEFECTS IN EXTRUDED CELLULAR CERAMIC ARTICLES

Imaging-based methods for detecting defects in an extruded cellular ceramic article having a web array are disclosed. The methods may include capturing a digital image of the web array to establish an intensity-based initial web array representation. The methods also may include performing an intens...

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Bibliographische Detailangaben
Hauptverfasser:	Madara Russell Wayne, Zhang Yeqing, Sim Hak Chuah, Sluder Gehl Kristine, Richard DiRisio Carlo, Charmaine Frey Julie
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING HANDLING RECORD CARRIERS IMAGE DATA PROCESSING OR GENERATION, IN GENERAL PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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Beschreibung
Zusammenfassung:	Imaging-based methods for detecting defects in an extruded cellular ceramic article having a web array are disclosed. The methods may include capturing a digital image of the web array to establish an intensity-based initial web array representation. The methods also may include performing an intensity threshold process on the initial web array representation to define an intensity-based high-resolution web array representation having sub-pixel resolution, and performing piecewise cubic spline fits to define corresponding web skeletons. The method may also include comparing intensities of the high-resolution web array representation along the web skeletons to a threshold intensity to determine the defect locations and sizes. The methods can be applied to determining the size and location of skin defects as well.