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Comparing Binary Image Analysis Measurements - Euclidean Geometry, Centroids and Corners

Published online by Cambridge University Press:  14 March 2018

Dennis W. Hetzner
Dennis W. Hetzner*
Affiliation:
Timken, Co. Canton, Ohio
*
dennis.hetzner@timken.com

Extract

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During the past several years, ASTM Subcommittee E04.14 on Quantitative Metallography has been developing an Image Analysis (I/A) methodology to determine the degree of circularity, roundness or sphericity of graphite nodules in ductile cast iron. In the as-polished condition, ideally the iron nodules should appear as dark circular objects in a light gray matrix, Figure 1. When performing Image Analysis measurements for these types of materials, complex gray image procedures should not be required to properly threshold the images to obtain an acceptable binary image on which to perform the measurements.

Type
Research Article
Information
Microscopy Today , Volume 16 , Issue 4 , July 2008 , pp. 10 - 17
Copyright
Copyright © Microscopy Society of America 2008

References

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