Joan Serra-Sagristà — accepted AI-conference papers

2021

Orthogonality and Zero DC Tradeoffs in Biorthogonal Graph Filterbanks

Dion Eustathios Olivier Tzamarias, Eduardo Pavez, Benjamin Girault, Antonio Ortega, Ian Blanes, Joan Serra-Sagristà

ICASSP 2021accepted

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,…

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2016

Fast lossless compression of whole slide pathology images using HEVC intra-prediction

Victor Sanchez, Miguel Hernández-Cabronero, Francesc Auli-Llinas, Joan Serra-Sagristà

ICASSP 2016accepted

The lossless compression of Whole Slide pathology Images (WSIs) using HEVC is investigated in this paper. Recently proposed intra-prediction algorithms based on differential pulse-code modulation (DPCM) and edge prediction provide significant bitrate improvements for a wide range of natural and scre…

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