About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
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Presentation Title |
Quantifying Error and Uncertainty in Transmission Electron Microscopy Images of Irradiation Defects |
Author(s) |
Gabriella Bruno, Matthew J Lynch, Ryan Jacobs, Dane D Morgan, Kevin G Field |
On-Site Speaker (Planned) |
Gabriella Bruno |
Abstract Scope |
Characterization of irradiated materials is critical for understanding the effects of radiation damage and recent advances have demonstrated the efficacy of machine learning models in automating the tedious process of manually counting defects from microscopy images. However, the human labeling required for training such models introduces a source of error due to the ambiguity in identifying defects of varying sizes, particularly within complex backgrounds. This study aims to systematically analyze the errors arising from human annotations in the quantification of irradiation defects in TEM images. Without consideration of visual complexity, results showed a 20% decrease in F1 scores when defects fell below 5% of the total image width. Correlations with visual complexity are on-going, with initial findings showing no significant variance based on local entropy. Our findings are crucial for both defining the errors inherent in human analysis as well as refining machine learning algorithms to ensure accurate defect characterization. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Characterization, Machine Learning |