Sung Deuk Kim Sung Kyu Jang Myung Jun Kim Jong Beom Ra Efficient block-based coding of noise images by combining pre-filtering and DCT. 37-40 1999 conf/iscas/1999 ISCAS (4) http://doi.ieeecomputersociety.org/10.1109/ISCAS.1999.779937 db/conf/iscas/iscas1999-4.html#KimJKR99