Perceptual Image Hashing Based on Multitask Neural Network

Table 4

The collision probability P_c under different threshold θ

Threshold θ	Collision probability Pc
0.90	0.2741
0.80	0.2284
0.70	0.1827
0.60	0.1385
0.50	0.0972
0.40	0.0607
0.30	0.0308