Japan Geoscience Union Meeting 2021

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[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-GI General Geosciences, Information Geosciences & Simulations

[M-GI34] Earth and planetary informatics with huge data management

Thu. Jun 3, 2021 9:00 AM - 10:30 AM Ch.03 (Zoom Room 03)

convener:Ken T. Murata(National Institute of Information and Communications Technology), Susumu Nonogaki(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Rie Honda(Department of Science and Technology, System of Natual Science, Kochi University), Keiichiro Fukazawa(Academic Center for Computing and Media Studies, Kyoto University), Chairperson:Keiichiro Fukazawa(Academic Center for Computing and Media Studies, Kyoto University), Ken T. Murata(National Institute of Information and Communications Technology)

9:45 AM - 10:00 AM

[MGI34-04] Introduction of Ultra-large-scale Visualization Method for 3D Geographical Information Using a Web Browser-based Scalable Display System

Tomohiro Kawanabe1, Kenji Ono2, *Ken T. Murata3, Atsushi Higuchi4 (1.Institute of Physical and Chemical Research, 2.Kyushu University, 3.National Institute of Information and Communications Technology, 4.Chiba University)

In recent years, the drawing and expression capabilities of Web browsers have evolved remarkably, making it possible to replace many desktop applications. This is largely due to advances in web technologies such as HTML5 and JavaScript. Especially in 3D graphics, with the advent of WebGL, it has become possible to bring out the same performance as native applications. ChOWDER [1] is open-source software that is being jointly researched and developed by RIKEN and Kyushu University. It is a web-based scalable display system that builds an ultra-high-resolution display environment by arranging multiple displays (full-screen Web browsers) in tiles that cannot be realized with a single PC. As an advanced and practical function of this system, we have published last year the ability to perform distributed rendering of 3D Web GIS applications on multiple display devices. [2] Using iTowns [3], a WebGL-based open source GIS, as a base software, it displays ultra-high-resolution 3D geographic information on ChOWDER's distributed display. The overlay display function of user-defined data (polygons, point clouds, etc.) provided by iTowns can also be used as it is. Fig.1 shows a 3D point cloud of the cloud observation data of the meteorological satellite HIMAWARI and the map data published by The Geospatial Information Authority of Japan overlayed on a ChOWDER display which consists of 15 4K resolution displays (total resolution: 19200x6430 pixels). Operations such as changing the viewpoint can be performed interactively on the user's PC. In this presentation, we will introduce an overview of the basic technologies that make up this function and examples of some visualization results.



[1] https://github.com/SIPupstreamDesign/ChOWDER

[2] Kawanabe, T., Hatta, K., & Ono, K. (2020, September). ChOWDER: A New Approach for Viewing 3D Web GIS on Ultra-High-Resolution Scalable Display. In 2020 IEEE International Conference on Cluster Computing (CLUSTER) (pp. 412-413). IEEE.

[3] http://www.itowns-project.org/