Robust Image Hashing Based on Cool and Warm Hue and Space Angle

Table 5

Performance comparison of the different algorithms.

Algorithm	Average time (s)	Hash length
Proposed algorithm	0.021	451 bits
QLBP [6]	0.036	256 bits
CVA-canny [7]	0.288	40 decimal numbers
Quadtree [12]	0.042	452 decimal numbers
Color structure [16]	0.019	354 bits
TD [17]	0.101	96 bits
LP [21]	0.028	1024 decimal numbers