Cristina Darolti Alfred Mertins Christoph Bodensteiner Ulrich G. Hofmann Local Region Descriptors for Active Contours Evolution. 2275-2288 2008 17 IEEE Transactions on Image Processing 12 http://dx.doi.org/10.1109/TIP.2008.2006443 db/journals/tip/tip17.html#DaroltiMBH08