@INPROCEEDINGS {14218,
author={R. M. Melo and M. A. Antunes and J. P. B. Barreto and G. Falcão and N. C. Gonçalves},
doi={0},
booktitle={IEEE International Conf. on Computer Vision - ICCV},
title={Unsupervised intrinsic calibration from a single frame using a 'plumb-line' approach},
year={2013},
month={December},
volume={1},
pages={1-8} 
}