Feng Liu Jinjun Wang Shenghuo Zhu Michael Gleicher Yihong Gong Visual-Quality Optimizing Super Resolution. 127-140 2009 28 Comput. Graph. Forum 1 http://dx.doi.org/10.1111/j.1467-8659.2008.01305.x db/journals/cgf/cgf28.html#LiuWZGG09