Chang Jian Kohei Inoue Kenji Hara Kiichi Urahama Fixed-Coefficient Iterative Bilateral Filters for Graph-Based Image Processing. 473-484 2009 PSIVT http://dx.doi.org/10.1007/978-3-540-92957-4_41 conf/psivt/2009 db/conf/psivt/psivt2009.html#JianIHU09