D. Lee, . Seong-whan, and . Lee, A new methodology for gray-scale character segmentation and recognition, p.524, 1995.

D. Maio and D. Maltoni, Direct gray-scale minutiae detection in fingerprints, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.19, issue.1, pp.27-4010, 1997.
DOI : 10.1109/34.566808

J. W. Suh, J. H. Kim, A. C. Downton, and S. Impedovo, Stroke extraction from gray-scale character image, 1997.

F. Lebourgeois and H. Emptoz, Skeletonization by Gradient Regularization and Diffusion, Ninth International Conference on Document Analysis and Recognition (ICDAR 2007) Vol 2, pp.1118-1122, 2007.
DOI : 10.1109/ICDAR.2007.4377089

T. Wakahara, Y. Kimura, and A. Tomono, Affine-invariant recognition of gray-scale characters using global affine transformation correlation, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.23, issue.4, pp.384-395, 2001.
DOI : 10.1109/34.917573

L. Wang and T. Pavlidis, Direct gray-scale extraction of features for character recognition, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.15, issue.10, pp.1053-1067, 1993.
DOI : 10.1109/34.254062

. Seong-whan, Y. Lee, and . Kim, Direct extraction of topographic features for gray scale character recognition, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.17, issue.7, pp.724-729, 1995.
DOI : 10.1109/34.391416

Y. Zhang, X. Zhou, A. Degterev, M. Lipinski, D. Adjeroh et al., A novel tracing algorithm for high throughput imaging, Journal of Neuroscience Methods, vol.160, issue.1, pp.149-162, 2007.
DOI : 10.1016/j.jneumeth.2006.07.028

D. Poz, A. P. Zanin, R. B. Do-vale, and G. M. , Automated extraction of road network from medium-and high-resolution images, Pattern Recognition and Image Analysis, pp.239-287, 2006.

R. Peteri, J. Celle, and T. Ranchin, Detection and extraction of road networks from high resolution satellite images, Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429), pp.301-305, 2003.
DOI : 10.1109/ICIP.2003.1246958
URL : https://hal.archives-ouvertes.fr/hal-00337185

Y. Xu, H. Zhang, H. Li, and G. Hu, An improved algorithm for vessel centerline tracking in coronary angiograms, Computer Methods and Programs in Biomedicine, vol.88, issue.2, pp.131-143
DOI : 10.1016/j.cmpb.2007.08.004

A. F. Frangi, W. J. Niessen, K. L. Vincken, and M. A. Viergever, Multiscale vessel enhancement filtering, Medical Image Computing and Computer- Assisted Intervention (MICCAI '98), pp.130-137, 1998.
DOI : 10.1148/radiology.191.1.8134563

T. Grigorishin, G. Hamid, and Y. Yang, Skeletonisation: An electrostatic field-based approach, Pattern Analysis and Applications, vol.13, issue.1, pp.163-177, 1998.
DOI : 10.1007/BF01259366

P. Stathis, E. Kavallieratou, and N. Papamarkos, An evaluation survey of binarization algorithms on historical documents, 2008 19th International Conference on Pattern Recognition, 2008.
DOI : 10.1109/ICPR.2008.4761546

T. Y. Zhang and C. Y. Suen, A fast parallel algorithm for thinning digital patterns, Communications of the ACM, vol.27, issue.3, pp.236-240, 1984.
DOI : 10.1145/357994.358023