GPI Seminar Series: Adrià Arrufat
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Adrià Arrufat, PhD Orange Labs, Inst. d'Électronique et de Télécommunications (IETR)/Inst. Nat. Sciences Appliquées (INSA), Rennes |
Abstract:
State of the art video codecs use transforms to ensure a compact signal representation. The transform stage is where compression takes place, however, little variety is observed in the type of transforms used for standardised video coding schemes: often, a single transform is considered, usually a Discrete Cosine Transform (DCT). Recently, other transforms have started to be considered in addition to the DCT. For instance, in the latest video coding standard, High Efficiency Video Coding (HEVC), the 4x4 sized blocks can make use of the Discrete Sine Transform (DST). This fact reveals an increasing interest to consider a plurality of transforms to achieve higher compression rates. This talk focuses on extending HEVC through the use of multiple transforms. (presentation slides available: GPI Intranet)
Short Biography:
Adrià Arrufat received a Master in Electrical Engineering studies from UPC (Polytechnic University of Catalonia, Spain) in 2012. He has obtained a PhD with Orange Labs France, together with IETR/INSA, Rennes 1 University, France in 2015. His PhD topic was focused on the use of multiple transforms for video coding and his work has been valued through 5 international publications (1 best paper award) and 5 patent applications. More information can be found here.