Ke Gao Shouxun Lin Yongdong Zhang Sheng Tang Object-based Image Retrieval with Attention Analysis and Spatial Re-ranking. 118-128 2008 Intelligent Information Processing http://dx.doi.org/10.1007/978-0-387-87685-6_16 conf/ifip12/2008iip db/conf/ifip12/iip2008.html#GaoLZT08