@conference {cLeon09,
	title = {Caption text extraction for indexing purposes using a hierarchical region-based image model},
	booktitle = {16th International Conference on Image Processing},
	year = {2009},
	pages = {1869{\textendash}1872},
	isbn = {978-1-4244-5655-0},
	doi = {http://dx.doi.org/10.1109/ICIP.2009.5413607},
	url = {http://hdl.handle.net/2117/7940},
	author = {Le{\'o}n, M. and Ver{\'o}nica Vilaplana and Gasull, A. and Marqu{\'e}s, F.}
}
