Fig. 5

ROC curves of performances for four hashing methods. Here shown are the performance comparison of four hashing methods in form of ROC curves. The false positive rates and true positive rates are the x-axis and y-axis, respectively. Besides our method, three other methods, i.e., LSH-core, Radon-based and TIRI + DCT, are included. The higher the curve is, the better the hashing method in terms of robustness and security