Samuel Fernández-Menduiña — accepted AI-conference papers

2025

Fast DCT+: A Family of Fast Transforms Based on Rank-One Updates of the Path Graph

Samuel Fernández-Menduiña, Eduardo Pavez, Antonio Ortega

ICASSP 2025accepted

This paper develops fast graph Fourier transform (GFT) algorithms with O(nlogn) runtime complexity for rank-one updates of the path graph. We first show that several commonly-used audio and video coding transforms belong to this class of GFTs, which we denote by DCT+. Next, starting from an arbitrar…

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2024

Tracking Beyond the Unambiguous Range with Modulo Single-Photon Lidar

Samuel Fernández-Menduiña, Joshua Rapp, Hassan Mansour, M. Greiff, Kieran Parsons

ICASSP 2024accepted

In single photon lidar (SPL), the laser repetition rate sets the maximum distance that can be recovered unambiguously. Conventional SPL extends this maximum recordable depth by reducing the repetition rate; however, the slower acquisition speed limits the number of received photons, which may be ins…

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