Astrid Lundmark Leif Haglund Adaptive Spatial and Temporal Prefiltering for Video Compression. 953-960 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2749&spage=953 2003 conf/scia/2003 SCIA db/conf/scia/scia2003.html#LundmarkH03