Seminario - Improving Quality of Compressed Videos for Human and Machines

Venedì 29 Nov 2019 ore 17:30 presso l'Aula Seminari Anile del Dipartimento di Matematica e Informatica, Università degli studi di Catania, il Dr. Lorenzo Seidenari (Università degli Studi di Firenze) terrà un seminario dal titolo Improving Quality of Compressed Videos for Human and Machines.

Speaker
Dr. Lorenzo Seidenari, University of Firenze
More info: http://www.micc.unifi.it/seidenari/

Title:  
Improving Quality of Compressed Videos for Human and Machines 

Abstract: 
Video streaming is ubiquitous and compression of streams is performed to reduce the bandwidth required for transmission, presenting a challenging trade-off between user experience and business sustainability for provider firms. In this talk I will discuss recent advancements we made in removing compression artifacts using Generative Adversarial Networks. This will cover how to deal with compression artifacts using GANs without knowing coding parameters in advance and some caveats on the evaluation of results. Furthermore I will discuss some recent evaluation protocols we devised exploiting semantic tasks instead of signal based metrics. Finally, from a system point of view, I will discuss how the generator architecture can be modified to attain real-time performance on the user end.