Liang Xiao Chenrong Huang Haijun Liang Huizhong Wu Concealment of Damaged Block Coded Images Using Intelligent Two-Step Best Neighborhood Matching Algorithm. 38-42 2005 conf/IEEEcgiv/2005 CGIV http://doi.ieeecomputersociety.org/10.1109/CGIV.2005.28 db/conf/IEEEcgiv/cgiv2005.html#XiaoHLW05