Automated Spatiotemporal Analysis of Fibrils and Coronal Rain using the Rolling Hough Transform
| Title: | Automated Spatiotemporal Analysis of Fibrils and Coronal Rain using the Rolling Hough Transform |
|---|---|
| Authors: | Schad, Thomas A. |
| Publication Year: | 2018 |
| Collection: | Astrophysics |
| Subject Terms: | Astrophysics - Solar and Stellar Astrophysics |
| More Details: | A technique is presented that automates the direction characterization of curvilinear features in multidimensional solar imaging data sets. It is an extension of the Rolling Hough Transform (RHT) technique presented by Clark, Peek, and Putman (Astrophys. J. 789, 82, 2014), and it excels at rapid quantification of spatial and spatiotemporal feature orientation even for low signal to noise applications. It operates on a pixel-by-pixel basis within a data set and reliably quantifies orientation even for locations not centered on a feature ridge, which is used here to derive a quasi-continuous map of the chromospheric fine structure projection angle. For time-series analysis, a procedure is developed that uses a hierarchical application of the RHT to automatically derive apparent motion of coronal rain observed off-limb. Essential to the success of this technique is this paper's formulation for the RHT error analysis as it provides a means to properly filter results. Comment: This the preprint version submitted to Solar Physics. See published article for Version of Record |
| Document Type: | Working Paper |
| DOI: | 10.1007/s11207-017-1153-9 |
| Access URL: | http://arxiv.org/abs/1809.03635 |
| Accession Number: | edsarx.1809.03635 |
| Database: | arXiv |
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| Items | – Name: Title Label: Title Group: Ti Data: Automated Spatiotemporal Analysis of Fibrils and Coronal Rain using the Rolling Hough Transform – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Schad%2C+Thomas+A%2E%22">Schad, Thomas A.</searchLink> – Name: DatePubCY Label: Publication Year Group: Date Data: 2018 – Name: Subset Label: Collection Group: HoldingsInfo Data: Astrophysics – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Astrophysics+-+Solar+and+Stellar+Astrophysics%22">Astrophysics - Solar and Stellar Astrophysics</searchLink> – Name: Abstract Label: Description Group: Ab Data: A technique is presented that automates the direction characterization of curvilinear features in multidimensional solar imaging data sets. It is an extension of the Rolling Hough Transform (RHT) technique presented by Clark, Peek, and Putman (Astrophys. J. 789, 82, 2014), and it excels at rapid quantification of spatial and spatiotemporal feature orientation even for low signal to noise applications. It operates on a pixel-by-pixel basis within a data set and reliably quantifies orientation even for locations not centered on a feature ridge, which is used here to derive a quasi-continuous map of the chromospheric fine structure projection angle. For time-series analysis, a procedure is developed that uses a hierarchical application of the RHT to automatically derive apparent motion of coronal rain observed off-limb. Essential to the success of this technique is this paper's formulation for the RHT error analysis as it provides a means to properly filter results.<br />Comment: This the preprint version submitted to Solar Physics. See published article for Version of Record – Name: TypeDocument Label: Document Type Group: TypDoc Data: Working Paper – Name: DOI Label: DOI Group: ID Data: 10.1007/s11207-017-1153-9 – Name: URL Label: Access URL Group: URL Data: <link linkTarget="URL" linkTerm="http://arxiv.org/abs/1809.03635" linkWindow="_blank">http://arxiv.org/abs/1809.03635</link> – Name: AN Label: Accession Number Group: ID Data: edsarx.1809.03635 |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11207-017-1153-9 Subjects: – SubjectFull: Astrophysics - Solar and Stellar Astrophysics Type: general Titles: – TitleFull: Automated Spatiotemporal Analysis of Fibrils and Coronal Rain using the Rolling Hough Transform Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Schad, Thomas A. IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 09 Type: published Y: 2018 |
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