Xin Hu Hui Peng Joseph Kesker Xiang Cai William G. Wee Jing-Huei Lee An Improved Adaptive Smoothing Method. 757-766 2009 ICIAP http://dx.doi.org/10.1007/978-3-642-04146-4_81 conf/iciap/2009 db/conf/iciap/iciap2009.html#HuPKCWL09