i4Ocean: transfer function-based interactive visualization of ocean temperature and salinity volume data
- 24 February 2021
- journal article
- research article
- Published by Taylor & Francis Ltd in International Journal of Digital Earth
- Vol. 14 (6), 766-788
- https://doi.org/10.1080/17538947.2021.1886355
Abstract
In this paper, we present a novel ocean visualization framework, which focuses on analyzing multidimensional and spatiotemporal ocean data. GPU-based visualization methods are explored to effectively visualize ocean data. An improved ray casting algorithm for heterogeneous multisection ocean volume data is presented. A two-layer spherical shell is taken as the ocean data proxy geometry, which enables oceanographers to obtain a real geographic background based on global terrain. An efficient ray sampling technique including an adaptive sampling technique and a preintegrated transfer function is proposed to achieve high-effectiveness and high-efficiency rendering. Moreover, an interactive transfer function is also designed to analyze the 3D structure of ocean temperature and salinity anomaly phenomena. Based on the framework, an integrated visualization system called i4Ocean is created. The visualization of ocean temperature and salinity anomalies extracted interactively by the transfer function is demonstrated.Keywords
Funding Information
- Natural Science Foundation of China (42030406)
- The Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology
- Ministry of Science and Technology (2016YFC1401008)
- ESA-NRSCC Scientific Cooperation Project on Earth Observation Science and Applications: Dragon 5 (58393)
- Open Fund of Key Laboratory of Urban Land Resources Monitoring
- Ministry of Natural Resources (KF-2020-05-085)
- The National Key R&D Program of China
- The Project Supported by the Open Fund of Key Laboratory of Urban Land Resources Monitoring and Simulation
- Ministry of Natural Resources
This publication has 37 references indexed in Scilit:
- Compressive Volume RenderingComputer Graphics Forum, 2015
- Mobile Volume Rendering: Past, Present and FutureIEEE Transactions on Visualization and Computer Graphics, 2015
- Multidimensional transfer functions for interactive volume renderingIEEE Transactions on Visualization and Computer Graphics, 2002
- Visualizing scalar volumetric data with uncertaintyComputers & Graphics, 2002
- The transfer function bake-offIEEE Computer Graphics and Applications, 2001
- Optical models for direct volume renderingIEEE Transactions on Visualization and Computer Graphics, 1995
- Regional Weather Prediction with a Model Combining Terrain-following and Isentropic Coordinates. Part I: Model DescriptionMonthly Weather Review, 1993
- El Niño-Southern Oscillation Displacements of the Western Equatorial Pacific Warm PoolScience, 1990
- Efficient ray tracing of volume dataACM Transactions on Graphics, 1990
- Volume renderingACM SIGGRAPH Computer Graphics, 1988