Generalizing lifted tensor-product wavelets to irregular polygonal domains

Approximation, B-Splines, Geometry Compression, Lifting, Subdivision Surfaces, Tessellations, Wavelets We present a new construction approach for symmetric lifted B-spline wavelets on irregular polygonal control meshes defining two-manifold topologies. Polygonal control meshes are recursively refined by stationary subdivision rules and converge to piecewise polynomial limit surfaces. At every subdivision level, our wavelet transforms provide an efficient way to add geometric details that are expanded from wavelet coefficients. Both wavelet decomposition and reconstruction operations are based on local lifting steps and have linear-time complexity. 2 DAGSTUHL 2000 SEMINAR ON SCIENTIFIC VISUALIZATION