Adding spatial distribution clue to aggregated vector in image retrieval

EURASIP Journal on Image and Video Processing

Table 3 SIFT descriptor results of image retrieval task on Holidays and Oxford for compact-size representation comparison

Methods	K	D’	Holiday	Oxford
VLAD [48]	64	128	0.510	–
Multivoc-VLAD [26]	4*256	128	0.614	–
Improved Fisher [9]	–	128	0.565	0.301
VLAD+SSR [8]	64	128	0.557	0.287
VLAD+intra+adapt [27]	–	128	0.625	0.448
HVLAD [28]	256	128	0.640	–
Fine-residualVLAD [29]	256	128	0.622	–
CEVLAD [31]	256	128	0.681	0.538
EEVLAD [31]	256	128	0.715	0.552
Improved VLAD	256	128	0.712	0.559
SDEVLAD 128D	256	128	0.736	0.571
SDEVLAD 128D + Multiroot	4*256	128	0.764	0.584