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Open AccessArticle

Determination of the Grain Size in Single-Phase Materials by Edge Detection and Concatenation

1
Faculty of Mechanical Engineering, University of Maribor, SI-2000 Maribor, Slovenia
2
Faculty of Technical Sciences, University of Novi Sad, 21000 Novi Sad, Serbia
*
Author to whom correspondence should be addressed.
Metals 2020, 10(10), 1381; https://doi.org/10.3390/met10101381
Received: 27 August 2020 / Revised: 9 October 2020 / Accepted: 12 October 2020 / Published: 16 October 2020
(This article belongs to the Special Issue Applied Artificial Intelligence in Steelmaking)
This paper presents a novel approach for edge detection and concatenation. It applies the proposed method on a set of optical microscopy images of aluminium alloy Al 99.5% (ENAW1050A) samples with different grain size values. The performance of the proposed approach is evaluated based on the intercept method and compared with the manual grain size determination method. Edge detection filters have proven inefficient in grain boundaries’ detection of the presented microscopy images. To some extent only the Canny edge-detection filter was able to compute grain boundaries of lower-resolution images adequately, while the presented method proved to be superior, especially in high-resolution images. The proposed method has proven its applicability, and it implies higher automatisation and lower processing times compared to manual optical microscopy image processing. View Full-Text
Keywords: grain boundary detection; image processing; optical microscopy; metallography; edge detection; edge connecting grain boundary detection; image processing; optical microscopy; metallography; edge detection; edge connecting
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MDPI and ACS Style

Berus, L.; Skakun, P.; Rajnovic, D.; Janjatovic, P.; Sidjanin, L.; Ficko, M. Determination of the Grain Size in Single-Phase Materials by Edge Detection and Concatenation. Metals 2020, 10, 1381.

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