@conference {cGiro-i-Nieto03, title = {Detection of Semantic Entities using Description Graphs}, booktitle = {4th European Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS)}, year = {2003}, month = {04/2003}, address = {London, England}, author = {Xavier Gir{\'o}-i-Nieto and Marqu{\'e}s, F.} }