منابع مشابه
Image Compression Terrain Simplification
We suggest a new terrain simplification algorithm which is based on known Digital Image Processing compression methods (e.g. DCT , wavelets compression) that was specially adjusted to fit Digital Elevation Models. DEM-images are terrains or elevation maps represented as gray scale images. We investigate the special nature of such terrain-images and design a unique pre-compression process which ...
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We describe an approach for rendering large terrains in real-time. A digital elevation map defines the rough shape of the terrain. During rendering, procedural geometric and texture detail is added by the graphics hardware. We show, how quad meshes can be generated quickly that have a locally varying resolution that is optimized for the inclusion of procedural detail. We obtain these distorted ...
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Terrain reconstruction from images is an ill-posed, yet commonly desired Structure from Motion task when compositing visual effects into live-action photography. These surfaces are required for choreography of a scene, casting physically accurate shadows of CG elements, and occlusions. We present a novel framework for generating the geometry of landscapes from extremely noisy point cloud datase...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 1997
ISSN: 0096-3941
DOI: 10.1029/97eo00353