KoPfTs2025_DSC: Time-Series Macro Image Dataset of Kozo Paper Fibers, Captured with Olympus Tough TG-5

This dataset, referred to as KoPfTs2025_DSC, contains 360 JPG macro images of Kozo fiber based paper. These were annotated with a decade‑wise time‑series label indicating its manufacture date (1950s, 1960s, 1970s, 1980s, 1990s, and 2000s). All samples were captured using an Olympus Tough TG-5 digital still camera (DSC) in microscope mode. The purpose of this dataset is to support time-series analyses of fiber morphology for historical or material studies.

The camera was set to microscope mode with autofocus, an aperture value of f/6.3, 4× magnification, and a focal length of 18 mm. An LED light guide (LG-1; Olympus, Tokyo, Japan) was used to ensure uniform illumination. Each image measures 4000×3000 pixels and is saved in JPG format.

Contents

- Fiber Type: Kozo
- Temporal Range: 1950s, 1960s, 1970s, 1980s, 1990s, 2000s (60 images per decade)
- Total Images: 360
- File Format: JPG
- Camera: Olympus Tough TG-5 (Digital Still Camera, Microscope mode, autofocus)
- Lighting Conditions: LED light guide LG-1 for uniform illumination
- Magnification: 4× (macro), focal length: 18 mm, aperture: f/6.3

These images are intended for use in morphological analysis of historical paper fibers, age classification tasks, and comparative studies across time periods. A single ZIP archive is provided, with subfolders labeled by decade.

Usage and Licensing

- We encourage reuse in academic and museum research projects.
- Please cite this dataset in scholarly works using its DOI and the short dataset name, KoPfTs2025_DSC.
- License: CC BY-SA 4.0

If you have questions or need additional details, please contact us through the information provided in our Zenodo profile. We plan to release future datasets under similar naming conventions (e.g., KoPfTs2026_DSC) to support continued development of fiber-based time-series databases.

Access and Collaboration

Currently, this dataset is Restricted (private access). We welcome collaboration with researchers and museum professionals interested in using these images. If you wish to access the dataset for joint research or scholarly activities, please **contact us** through the information provided in our Zenodo profile. We will grant access rights on a case-by-case basis.