Discriminative Codebook Hashing for Supervised Video Retrieval

Table 1

The mAP of different hash code lengths on three datasets, where the best experimental results are given in bold.

Method	CC_WEB_VIDEO				HMDB51				UCF101
	32 bits	48 bits	64 bits	96 bits	32 bits	48 bits	64 bits	96 bits	32 bits	48 bits	64 bits	96 bits
ITQ [19]	0.6877	0.7725	0.8099	0.7700	0.0697	0.0749	0.0793	0.0885	0.1383	0.1620	0.1801	0.2119
SH [20]	0.6729	0.7026	0.6994	0.6708	0.0662	0.0657	0.0642	0.0653	0.1033	0.1138	0.1244	0.1395
DSH [21]	0.6510	0.7060	0.6929	0.8158	0.0505	0.0628	0.0671	0.0750	0.0720	0.0667	0.0815	0.1082
LFH [22]	0.8327	0.8088	0.9854	0.9912	0.0141	0.0208	0.0148	0.0225	0.0032	0.0038	0.0078	0.0113
KSH [23]	0.9368	0.9030	0.9477	0.8761	0.2470	0.2811	0.3054	0.3144	0.3222	0.3598	0.3972	0.4075
JMVH [35]	0.7842	0.5576	0.4335	0.3745	0.2807	0.3015	0.2418	0.1295	0.3941	0.5166	0.6007	0.6875
SMVH [34]	0.9346	0.9411	0.9543	0.7490	0.1212	0.1399	0.1374	0.0319	—	—	0.0094	0.0304
DCH	0.9531	0.9763	0.9886	0.9858	0.2568	0.3819	0.3600	0.4150	0.5310	0.6137	0.6609	0.6458