The red-black wavelet transform and the lifting scheme
Geert Uytterhoeven, Adhemar Bultheel · Lirias · 2000
We recall how the lifting idea can be used to construct nonseparable wavelets on the quincunx grid but we also illustrate how this idea leads to the construction of a new kind of second generation wavelets on grids that are alternatingly hexagonal and triangular. These wavelets are constructed using a 2D lifting scheme which is based on a red-black blocking scheme. Compared to classical tensor product wavelets on the same grid, these new wavelets show less anisotropy.