Figure 2
From: One-Time Key Based Phase Scrambling for Phase-Only Correlation between Visually Protected Images
Difference between the previously proposed image matching and the image matching proposed herein. (a) Previously proposed image matching. A key is required for scrambling both the templates and the query images. (b) Proposed image matching. A key is only used for scrambling the templates. All of the templates can be scrambled by independent keys. previous image matchingproposed image matching