O capítulo da Sociedade de Processamento de Sinais  do IEEE e o Laboratório de 

Processamento de Sinais (LPS - Poli/COPPE/UFRJ) convidam a comunidade acadêmica para a 

palestra 

GREENER VIDEO CODING

a ser proferida pelo

PROF. RICARDO L. DE QUEIROZ 

IEEE SPS Distinguished Lecturer 

Universidade de Brasilia 

Dia: 13/06/2012 

Hora: 14h 

Local: LPS II  

Centro de Tecnologia - Bloco I – Sala 146  

Abstract:  

Computers and information technology are proving themselves as energy-hungry partners in a society 

with carbon emission issues to be resolved. Video coding is a very computation-intensive, energydemanding task. We approach green computing applied to video by setting task parameters in order to 

minimize energy consumption for a given performance. We applied the concept to H.264/AVC video 

coding, showing that one can substantially reduce energy consumption at the expense of a small ratedistortion (RD) performance penalty. We used a state-of-the-art implementation, x264, for tests and show 

RD results for comparisons and discussions. 

Biography:  

Dr. Ricardo L. de Queiroz received his Ph.D. degree from The University of Texas at Arlington in 1994.

He joined the research staff at Xerox Corp. from 1994 to 2002. Since 2004 he is with Universidade de 

Brasilia, where he is now a Full Professor at the Computer Science Department. Dr. de Queiroz has 

published over 140 articles in Journals and conferences and contributed chapters to books as well. He also 

holds 46 issued patents.  He is an elected member of the IEEE Signal Processing Society's Multimedia 

Signal Processing (MMSP) Technical Committee and a former member of other committees and editoral 

boards. He has been appointed an IEEE Signal Processing Society Distinguished Lecturer for the 2011-

2012 term. He also organized many conferences and IEEE chapters. His research interests include image 

and video compression, multirate signal processing, and color imaging.