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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.03744 |
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| _version_ | 1866910011495546880 |
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| author | Meier, Maike Lazzarino, Lorenzo Shustin, Boris Daas, Hussam Al Quinn, Paul |
| author_facet | Meier, Maike Lazzarino, Lorenzo Shustin, Boris Daas, Hussam Al Quinn, Paul |
| contents | Spectro-microscopy is an experimental technique which can be used to observe spatial variations in chemical state and changes in chemical state over time or under experimental conditions. As a result it has broad applications across areas such as energy materials, catalysis, environmental science and biological samples. However, the technique is often limited by factors such as long acquisition times and radiation damage. We present two measurement strategies that allow for significantly shorter experiment times and total doses applied. The strategies are based on taking only a small subset of all the measurements (e.g. sparse acquisition or subsampling), and then computationally reconstructing all unobserved measurements using mathematical techniques. The methods are data-driven, using spectral and spatial importance subsampling distributions to identify important measurements. As a result, taking as little as 4-6\% of the measurements is sufficient to capture the same information as in a conventional scan. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_03744 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Reducing acquisition time and radiation damage: data-driven subsampling for spectro-microscopy Meier, Maike Lazzarino, Lorenzo Shustin, Boris Daas, Hussam Al Quinn, Paul Medical Physics Numerical Analysis Optics Spectro-microscopy is an experimental technique which can be used to observe spatial variations in chemical state and changes in chemical state over time or under experimental conditions. As a result it has broad applications across areas such as energy materials, catalysis, environmental science and biological samples. However, the technique is often limited by factors such as long acquisition times and radiation damage. We present two measurement strategies that allow for significantly shorter experiment times and total doses applied. The strategies are based on taking only a small subset of all the measurements (e.g. sparse acquisition or subsampling), and then computationally reconstructing all unobserved measurements using mathematical techniques. The methods are data-driven, using spectral and spatial importance subsampling distributions to identify important measurements. As a result, taking as little as 4-6\% of the measurements is sufficient to capture the same information as in a conventional scan. |
| title | Reducing acquisition time and radiation damage: data-driven subsampling for spectro-microscopy |
| topic | Medical Physics Numerical Analysis Optics |
| url | https://arxiv.org/abs/2602.03744 |