Hierarchical Image-based and Polygon-based Rendering for Large-Scale Visualizations

Image-based rendering takes advantage of the bounded display resolution to limit the rendering complexity for very large datasets. However, imagebased rendering also suffers from several drawbacks that polygon-based rendering does not. These include the inability to change the illumination and material properties of objects, screen-based querying of object-specific properties in databases, and unrestricted viewer movement without visual artifacts such as visibility gaps. View-dependent rendering has emerged as another solution for hierarchical and interactive rendering of large polygon-based visualization datasets. In this paper we study the relative advantages and disadvantages of these approaches to learn how best to combine these competing techniques towards a hierarchical, robust, and hybrid rendering system for large data visualization.

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