Wavelet Analysis for a New Multiresolution Model
for Large-Scale Textured Terrains
Francisco J. Perales . María José Abásolo
Graphics and Vision Unit . Department of Mathematics & Computing
University of the Balearic Islands
Cra. De Valldemossa km 7.5 (07001) Palma, Spain
Large terrain databases require a great number of polygons and textures. In consequence, transmission of terrain data over slow networks is still worrying. Multiresolution models allow progressive transmission, that is, the transmission of a simple model followed by successive refinements. In this work we describe a new multiresolution model called Geometric-Textured Bitree (GTB) that enables progressive transmission of both geometry and textures of a terrain model. Wavelet Multiresolution Analysis is applied in different steps of the process: selection of geometric points, texture classification and segmentation. An innovative texture synthesis process based on Wavelet classification is used in the reconstruction of the texture model.
Progressive Transmission, Quadtree Triangulation, Multiresolution Model, Multiresolution Analysis, Wavelets, Texture Classification and Segmentation, Texture synthesis