Real-time Contour Map Reconstruction with 3D Terrain on Modern Graphics Hardware
نویسنده
چکیده
A new algorithm for reconstructing contour map from raster DEM data is presented. It runs completely within the programmable 3D visualization pipeline in real-time. During the rendering, we first make an elevation gradient map out of original terrain vertex data. Then figure out the final contour lines with image-space processing, and blend the values on the original scene to obtain the final scene with contour map. We implemented this method in our global 3D-digitalearth platform, with interactive frame-rates and high image quality.
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