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    We developed a new method for visualizing dynamic heightfields in real time. This technique ensures accurate, artifact-free rendering of complex simulation data for scientific applications.

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    Area of Science:

    • Computer Graphics
    • Scientific Visualization
    • Geospatial Data Analysis

    Background:

    • Visualizing medium-scale dynamic heightfields presents challenges due to data size, exceeding direct rendering capabilities without pre-filtering or streaming.
    • Real-time visualization of unfiltered flood simulation data is crucial for scientific analysis but requires efficient rendering techniques.
    • Existing methods often compromise accuracy or introduce visual artifacts when handling such datasets.

    Purpose of the Study:

    • To propose an interactive visualization method for medium-scale dynamic heightfields that avoids visual artifacts.
    • To enable real-time visualization of complex, unfiltered scientific simulation data, such as flood simulations.
    • To achieve view-dependent, continuous levels of detail for extreme zoom ranges in geospatial visualization.

    Main Methods:

    • Utilizes compute shaders to maintain a guaranteed watertight triangulation within GPU memory.
    • Approximates interpolated heightfields using view-dependent, continuous levels of detail.
    • Employs incremental updates by refining cached results from previous frames, minimizing computational effort and heightfield sampling operations for adaptive interpolations.

    Main Results:

    • The method achieves stable runtime performance within a limited time budget.
    • It provides a guaranteed watertight triangulation, approximating heightfields accurately.
    • Demonstrates competitive runtime performance compared to non-watertight methods while offering superior accuracy.

    Conclusions:

    • The proposed method effectively visualizes medium-scale dynamic heightfields without visual artifacts.
    • It supports extreme zoom ranges and real-time performance for scientific applications like flood simulation analysis.
    • Offers a robust and accurate solution for interactive geospatial visualization challenges.