Identifying local structural states in atomic imaging by computer vision
Abstract
Abstract The availability of atomically resolved imaging modalities enables an unprecedented view into the local structural states of materials, which manifest themselves by deviations from the fundamental assumptions of periodicity and symmetry. Consequently, approaches that aim to extract these local structural states from atomic imaging data with minimal assumptions regarding the average crystallographic configuration of a material are indispensable to advances in structural and chemical investigations of materials. Here, we present an approach to identify and classify local structural states that is rooted in computer vision. This approach introduces a definition of a structural state that is composed of both local and nonlocal information extracted from atomically resolved images, and is wholly untethered from the familiar concepts of symmetry and periodicity. Instead, this approach relies on computer vision techniques such as feature detection, and concepts such as scale invariance. We present the fundamental aspects of local structural state extraction and classification by application to simulated scanning transmission electron microscopy images, and analyze the robustness of this approach in the presence of common instrumental factors such as noise, limited spatial resolution, and weak contrast. Finally, we apply this computer vision-based approach for the unsupervised detection and classification of local structural statesmore »
- Authors:
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1330726
- Alternate Identifier(s):
- OSTI ID: 1333065
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Published Article
- Journal Name:
- Advanced Structural and Chemical Imaging
- Additional Journal Information:
- Journal Name: Advanced Structural and Chemical Imaging Journal Volume: 2 Journal Issue: 1; Journal ID: ISSN 2198-0926
- Publisher:
- Springer Science + Business Media
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS
Citation Formats
Laanait, Nouamane, Ziatdinov, Maxim, He, Qian, and Borisevich, Albina. Identifying local structural states in atomic imaging by computer vision. Germany: N. p., 2016.
Web. doi:10.1186/s40679-016-0028-8.
Laanait, Nouamane, Ziatdinov, Maxim, He, Qian, & Borisevich, Albina. Identifying local structural states in atomic imaging by computer vision. Germany. https://doi.org/10.1186/s40679-016-0028-8
Laanait, Nouamane, Ziatdinov, Maxim, He, Qian, and Borisevich, Albina. Wed .
"Identifying local structural states in atomic imaging by computer vision". Germany. https://doi.org/10.1186/s40679-016-0028-8.
@article{osti_1330726,
title = {Identifying local structural states in atomic imaging by computer vision},
author = {Laanait, Nouamane and Ziatdinov, Maxim and He, Qian and Borisevich, Albina},
abstractNote = {Abstract The availability of atomically resolved imaging modalities enables an unprecedented view into the local structural states of materials, which manifest themselves by deviations from the fundamental assumptions of periodicity and symmetry. Consequently, approaches that aim to extract these local structural states from atomic imaging data with minimal assumptions regarding the average crystallographic configuration of a material are indispensable to advances in structural and chemical investigations of materials. Here, we present an approach to identify and classify local structural states that is rooted in computer vision. This approach introduces a definition of a structural state that is composed of both local and nonlocal information extracted from atomically resolved images, and is wholly untethered from the familiar concepts of symmetry and periodicity. Instead, this approach relies on computer vision techniques such as feature detection, and concepts such as scale invariance. We present the fundamental aspects of local structural state extraction and classification by application to simulated scanning transmission electron microscopy images, and analyze the robustness of this approach in the presence of common instrumental factors such as noise, limited spatial resolution, and weak contrast. Finally, we apply this computer vision-based approach for the unsupervised detection and classification of local structural states in an experimental electron micrograph of a complex oxides interface, and a scanning tunneling micrograph of a defect-engineered multilayer graphene surface.},
doi = {10.1186/s40679-016-0028-8},
journal = {Advanced Structural and Chemical Imaging},
number = 1,
volume = 2,
place = {Germany},
year = {Wed Nov 02 00:00:00 EDT 2016},
month = {Wed Nov 02 00:00:00 EDT 2016}
}
https://doi.org/10.1186/s40679-016-0028-8
Figures / Tables:
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