Signature quadratic form distances for content-based similarity.

Christian Beecks Merih Seran Uysal Thomas Seidl Signature quadratic form distances for content-based similarity. 697-700 2009 ACM Multimedia http://doi.acm.org/10.1145/1631272.1631391 conf/mm/2009 db/conf/mm/mm2009.html#BeecksUS09