Interactive Close-Up Rendering for Detail+Overview Visualization of 3D Digital Terrain Models

This paper presents an interactive rendering technique for detail+overview visualization of 3D digital terrain models using interactive close-ups. A close-up is an alternative presentation of input data varying with respect to geometrical scale, mapping, appearance, as well as Level-of-Detail (LOD) and Level-of-Abstraction (LOA) used. The presented 3D closeup approach enables in-situ comparison of multiple Region-of-Interests (ROIs) simultaneously. We describe a GPU-based rendering technique for the image-synthesis of multiple closeups in real-time.