Dion Eustathios Olivier Tzamarias

Orthogonality and Zero DC Tradeoffs in Biorthogonal Graph Filterbanks

Biorthogonal graph wavelet filterbanks, also known as GraphBior, are one of the most popular graph transforms used in image compression, but up to now, they could be designed based on two known admissible fundamental matrices: i) the random walk Laplacian, which heavily penalizes low degree pixels,…