Global Coral Health Levels Analysis Database with Semantic Computing and 5D World Map Piyaporn NURARAK a,1 , Yasushi KIYOKI a , Petchporn CHAWAKITCHAREON b and Yasuhiro HAYASHI c a Graduate School of Media and Governance, Keio University, Japan b Environmental Engineering Association of Thailand, Thailand c Faculty of Data Science, Musashino University, Japan Abstract. Global warming and climate change affect not only all living things but also many non-living things. Furthermore, those phenomena caused extreme disasters that become impossible to ignore. Coral bleaching is a phenomenon to show ocean warming due to climate change. This paper presents the analysis and visualization of the coral health levels database by using 5D World Map System. Coral health levels are analyzed using a coral-knowledge image that includes coral with a coral health chart. We use image processing and color semantic distance to interpret coral health levels. We have implemented an actual space integration system to access environmental information resources with coral health levels and image analysis that the results have been shown on the 5D World Map System. As for the experiment study, the study areas of coral health levels analysis are located in the ocean close to Thailand's islands as Ko Ha (Five Island), Ko Bon, Ko Hin Ngam, Ko Tarutao, Ko Thalu, and Ko Samaesarn. Keywords. coral health levels, semantic computing, coral health levels database, coral-knowledge image, image processing, global environmental analysis, 5D World Map. 1. Introduction Global warming and climate change affect not only all living things but also many non- living things. Furthermore, those phenomena caused extreme disasters such as stronger storms, rising seas, and ocean warming that become impossible to ignore. Global warming is very close to us because everything in this world is dependent on each other. That is why everyone on this planet should start to be aware and understand the impacts of the future. Coral bleaching is a phenomenon to show ocean warming due to climate change. Our motivation is promoting healthy reefs by engaging the global community in monitoring coral health and coral bleaching with 5D World Map System. The 5D World Map System is globally utilized as a Global Environmental Semantic Computing System for disaster, natural phenomena, ocean-water analysis with local and global multimedia data resources. 1 Corresponding Author, Graduate School of Media and Governance, Keio University, Shonan Fujisawa Campus, 5322 Endo, Fujisawa, Kanagawa, 252-0882, Japan; Email: pnurarak@sfc.keio.ac.jp. Information Modelling and Knowledge Bases XXXIII M. Tropmann-Frick et al. (Eds.) © 2021 The authors and IOS Press. This article is published online with Open Access by IOS Press and distributed under the terms of the Creative Commons Attribution Non-Commercial License 4.0 (CC BY-NC 4.0). doi:10.3233/FAIA210481 129