Development and Deployment of THEIA: A Compact Underwater Multispectral Imaging System

Spanos, Sotiris; Antoniou, Christos; Ntouskos, Valsamis; Mallios, Angelos; Nomikou, Paraskevi; Karantzalos, Konstantinos

doi:10.5194/isprs-archives-XLVIII-2-W10-2025-287-2025

Articles | Volume XLVIII-2/W10-2025

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Articles | Volume XLVIII-2/W10-2025

https://doi.org/10.5194/isprs-archives-XLVIII-2-W10-2025-287-2025

Articles | Volume XLVIII-2/W10-2025

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Metrics
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07 Jul 2025

| 07 Jul 2025

Development and Deployment of THEIA: A Compact Underwater Multispectral Imaging System

Sotiris Spanos, Christos Antoniou, Valsamis Ntouskos, Angelos Mallios, Paraskevi Nomikou, and Konstantinos Karantzalos

Sotiris Spanos

Remote Sensing Lab, National Technical University of Athens, Greece

Christos Antoniou

Remote Sensing Lab, National Technical University of Athens, Greece

Valsamis Ntouskos

https://orcid.org/0000-0003-1810-7802

Department of Engineering and Sciences, Universitas Mercatorum, Rome, Italy

Remote Sensing Lab, National Technical University of Athens, Greece

Angelos Mallios

Ploa Technology Consultants S.L., Girona, Spain

Paraskevi Nomikou

https://orcid.org/0000-0001-8842-9730

Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Greece

Konstantinos Karantzalos

https://orcid.org/0000-0001-8730-6245

Remote Sensing Lab, National Technical University of Athens, Greece

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StreamUR: Physics-informed Near Real-Time Underwater Image Restoration

Christos Antoniou, Sotiris Spanos, Simon Vellas, Valsamis Ntouskos, and Konstantinos Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-3-2024, 1–8, https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-1-2024,https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-1-2024, 2024

⁴⁰Ar ∕ ³⁹Ar constraints on the eruption history of the Christiana Volcano of the Christiana-Santorini-Kolumbo volcanic field, Greece

Pieter Z. Vroon, Teun Beemster, Xiaolong Zhou, Paraskevi Nomikou, Martijn Klaver, Jan R. Wijbrans, and Klaudia F. Kuiper

Geochronology, 8, 279–295, https://doi.org/10.5194/gchron-8-279-2026,https://doi.org/10.5194/gchron-8-279-2026, 2026

Short summary

The Christiana Islands represents the oldest subaerial volcanism in the Christiana-Santorini-Kolombo volcanic field, but the exact age of this volcano has been unknown. This study reports new ⁴⁰Ar/³⁹Ar ages of ten volcanic samples from Christiana Island that cluster between 2.5–2.7 Ma with small uncertainties (0.02–0.14 Ma). One sample dated much younger: 133 ka; this is most likely derived from the Middle Pumice Plinian eruption of Santorini.

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Tilemachos Moumouris, Vasileios Tsironis, Athena Psalta, and Konstantinos Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-M-7-2025, 43–48, https://doi.org/10.5194/isprs-archives-XLVIII-M-7-2025-43-2025,https://doi.org/10.5194/isprs-archives-XLVIII-M-7-2025-43-2025, 2025

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StreamUR: Physics-informed Near Real-Time Underwater Image Restoration

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Vasileios Tsironis, Athina Psalta, and Konstantinos Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-3-2024, 553–558, https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-553-2024,https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-553-2024, 2024

MAPPING BEE-KEEPING FOREST PLANTS FROM MEDIUM SPATIAL RESOLUTION MULTISPECTRAL SATELLITE DATA

A. Antonopoulos, O. Gounari, A. Falagas, A. Tsagkarakis, and K. Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-1-W2-2023, 1839–1845, https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1839-2023,https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1839-2023, 2023

HOW CHALLENGING IS THE DISCRIMINATION OF FLOATING MATERIALS ON THE SEA SURFACE USING HIGH RESOLUTION MULTISPECTRAL SATELLITE DATA?

P. Mikeli, K. Kikaki, I. Kakogeorgiou, and K. Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2022, 151–157, https://doi.org/10.5194/isprs-archives-XLIII-B3-2022-151-2022,https://doi.org/10.5194/isprs-archives-XLIII-B3-2022-151-2022, 2022

CLOUDTRAN: CLOUD REMOVAL FROM MULTITEMPORAL SATELLITE IMAGES USING AXIAL TRANSFORMER NETWORKS

D. Christopoulos, V. Ntouskos, and K. Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B2-2022, 1125–1132, https://doi.org/10.5194/isprs-archives-XLIII-B2-2022-1125-2022,https://doi.org/10.5194/isprs-archives-XLIII-B2-2022-1125-2022, 2022

FILTERING LPIS DATA FOR BUILDING TRUSTWORTHY TRAINING DATASETS FOR CROP TYPE MAPPING: A CASE STUDY IN GREECE

O. Gounari, C. Karakizi, and K. Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2022, 871–877, https://doi.org/10.5194/isprs-archives-XLIII-B3-2022-871-2022,https://doi.org/10.5194/isprs-archives-XLIII-B3-2022-871-2022, 2022

JOINT LAND COVER AND CROP TYPE MAPPING USING MULTI-TEMPORAL SENTINEL-2 DATA FROM VARIOUS ENVIRONMENTAL ZONES IN GREECE

C. Karakizi, Z. Kandylakis, A. D. Vaiopoulos, and K. Karantzalos

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B3-2021, 319–326, https://doi.org/10.5194/isprs-archives-XLIII-B3-2021-319-2021,https://doi.org/10.5194/isprs-archives-XLIII-B3-2021-319-2021, 2021

Development and Deployment of THEIA: A Compact Underwater Multispectral Imaging System

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