Matan Protter Michael Elad Hiroyuki Takeda Peyman Milanfar Generalizing the Nonlocal-Means to Super-Resolution Reconstruction. 36-51 2009 18 IEEE Transactions on Image Processing 1 http://dx.doi.org/10.1109/TIP.2008.2008067 db/journals/tip/tip18.html#ProtterETM09