Matlab code for the validation of the tortuosity of retinal vessels, as described in:
E. Grisan, M. Foracchia and A. Ruggeri, "A novel method for the automatic grading of retinal vessel tortuosity", IEEE Trans Med Imaging, 2008 Mar;27(3):310-9. doi: 10.1109/TMI.2007.904657.
E. Grisan, M. Foracchia and A. Ruggeri, "A novel method for the automatic evaluation of retinal vessel tortuosity," Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2003, pp. 866-869 Vol.1, doi: 10.1109/IEMBS.2003.1279902.