SoFTg: A hybrid segmentation framework for solar granulation revealing turbulent convection statistics at DKIST scales
Abstract
In this work, we present Solar Feature Tracking: granules (SoFTg), a new hybrid algorithm within the SoFT library designed for the segmentation and tracking of solar granulation. By combining a heuristic approach based on a custom adaptive-thresholding technique with the speed and robustness of deep-learning methods, SoFTg provides a fast, reliable and user-friendly solution for granule segmentation, followed by the standard SoFT approach for tracking. We present a comprehensive evaluation of the algorithm's performance using multiple metrics and analyse the different stages of the processing pipeline. The method is tested on three datasets acquired with the Visible Broadband Imager operating in the red continuum at the Daniel K. Inouye Solar Telescope in Maui, Hawaii. We present distributions of both the lifetime and equivalent diameter of the thousands of granules tracked, providing, for the first time, statistically robust evidence of turbulent convection at the spatial scales now accessible through the high-resolution imaging capabilities of DKIST.
Related
- Detection of Solar-like Oscillations and Granulation at Infrared Wavelengths using JWST
- Distinct stellar-parameter dependencies of granulation and mesogranulation in red giants
- Metallicity does not reorder line-to-line sensitivity to granulation in solar-like stars
- Granulation-driven spectral irradiance variability of Sun-like stars
- Shadowing the Sun I: Testing Synthetic Granulation Spectra with NEID Solar Eclipse Observations
BibTeX
@misc{berretti2026softg,
title = {{SoFTg: A hybrid segmentation framework for solar granulation revealing turbulent convection statistics at DKIST scales}},
author = {M. Berretti and S. Criscuoli and A. Fanti and P. H. Keys and L. Bertello and M. Stangalini and F. Berrilli},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.35100},
eprint = {2610.35100},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.35100},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - SoFTg: A hybrid segmentation framework for solar granulation revealing turbulent convection statistics at DKIST scales
AU - M. Berretti
AU - S. Criscuoli
AU - A. Fanti
AU - P. H. Keys
AU - L. Bertello
AU - M. Stangalini
AU - F. Berrilli
PY - 2026
DA - 2026/10/26
PB - arXiv
DO - 10.48550/arxiv.2610.35100
UR - https://arxiv.org/abs/2610.35100
AB - In this work, we present Solar Feature Tracking: granules (SoFTg), a new hybrid algorithm within the SoFT library designed for the segmentation and tracking of solar granulation. By combining a heuristic approach based on a custom adaptive-thresholding technique with the speed and robustness of deep-learning methods, SoFTg provides a fast, reliable and user-friendly solution for granule segmentation, followed by the standard SoFT approach for tracking. We present a comprehensive evaluation of the algorithm's performance using multiple metrics and analyse the different stages of the processing pipeline. The method is tested on three datasets acquired with the Visible Broadband Imager operating in the red continuum at the Daniel K. Inouye Solar Telescope in Maui, Hawaii. We present distributions of both the lifetime and equivalent diameter of the thousands of granules tracked, providing, for the first time, statistically robust evidence of turbulent convection at the spatial scales now accessible through the high-resolution imaging capabilities of DKIST.
ER -