Projects per year
Description
Abstract
High quality specimen digitization is becoming standard across the sciences, is relevant for curation of natural history collections, and must become a priority for dendrochronology. Here, ultra-high resolution images of tree-ring specimens are presented. Our gigapixel images of polished specimens have proven effective for digital analyses, archiving, and education, and we believe macro photography may prove a lower cost and more broadly accessible digitization alternative to microtomy and X-rays. We advocate for gigapixel macro photography as one accessible and adaptable paradigm to elevate reflected light imaging standards in dendrochronology.
Description
Two ultra-high resolution images of tree rings are available as TIFF files. Tree-ring specimens are Pseudotsuga macrocarpa from California and Quercus macrocarpa from Minnesota sampled in June 2016 and March 2019, respectively. These gigapixel macro photographs were created using a professional-grade camera body, the GigaMacro imaging system, and computational post-processing. Image comparison from a flatbed scanner and the GigaMacro system are shown (Figure 1), and visual aids illustrate the mechanics of gigapixel macro photography (Figure 2). Specific questions about these tree-ring images and about access to additional materials may be addressed to Daniel Griffin ([email protected]).
Funding information
Sponsorship: National Science Foundation Division of Environmental Biology, Award: 1655144; National Science Foundation Division of Atmospheric and Geospace Sciences, Award: 1602633; National Science Foundation Division of Atmospheric and Geospace Sciences, Award: 1903504
High quality specimen digitization is becoming standard across the sciences, is relevant for curation of natural history collections, and must become a priority for dendrochronology. Here, ultra-high resolution images of tree-ring specimens are presented. Our gigapixel images of polished specimens have proven effective for digital analyses, archiving, and education, and we believe macro photography may prove a lower cost and more broadly accessible digitization alternative to microtomy and X-rays. We advocate for gigapixel macro photography as one accessible and adaptable paradigm to elevate reflected light imaging standards in dendrochronology.
Description
Two ultra-high resolution images of tree rings are available as TIFF files. Tree-ring specimens are Pseudotsuga macrocarpa from California and Quercus macrocarpa from Minnesota sampled in June 2016 and March 2019, respectively. These gigapixel macro photographs were created using a professional-grade camera body, the GigaMacro imaging system, and computational post-processing. Image comparison from a flatbed scanner and the GigaMacro system are shown (Figure 1), and visual aids illustrate the mechanics of gigapixel macro photography (Figure 2). Specific questions about these tree-ring images and about access to additional materials may be addressed to Daniel Griffin ([email protected]).
Funding information
Sponsorship: National Science Foundation Division of Environmental Biology, Award: 1655144; National Science Foundation Division of Atmospheric and Geospace Sciences, Award: 1602633; National Science Foundation Division of Atmospheric and Geospace Sciences, Award: 1903504
Date made available | Apr 16 2021 |
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Publisher | Data Repository for the University of Minnesota |
Date of data production | Apr 15 2020 |
Projects
- 3 Finished
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Collaborative Research: Multi-proxy Reconstructions of N
Griffin, D. (PI)
THE NATIONAL SCIENCE FOUNDATION
5/15/17 → 4/30/20
Project: Research project
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Collaborative Research: SG: Fire, climate, and vegetatio
Griffin, D. (PI), Hobbie, S. E. (CoI) & Reich, P. B. (CoI)
THE NATIONAL SCIENCE FOUNDATION
4/1/17 → 3/31/21
Project: Research project
Research output
- 1 Article
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Gigapixel Macro Photography of Tree Rings
Griffin, D., Porter, S. T., Trumper, M. L., Carlson, K. E., Crawford, D. J., Schwalen, D. & McFadden, C. H., Jul 20 2021, In: Tree-Ring Research. 77, 2, p. 86-94 9 p.Research output: Contribution to journal › Article › peer-review
12 Scopus citations