A Theoretical Analysis of One-time Key Based Phase Scrambling for Phase-only Correlation between Visually Protected Images
نویسندگان
چکیده
We present a theoretical analysis of one-time key based phase scrambling for image matching using phase-only correlation (POC). Phase scrambling is used for visual information protection of templates. The effect of scrambling on POC values is analyzed. As a result, the peak value, which is used as a measure of signal congruence, of the POC between nonscrambled signals can be estimated by observed POC values with key parameters. In addition, we indicate a condition in which the peak value of the POC between non-scrambled signals estimated by observed POC values with one parameter.
منابع مشابه
One-Time Key Based Phase Scrambling for Phase-Only Correlation between Visually Protected Images
We present a theoretical analysis of one-time key based phase scrambling for image matching using phase-only correlation (POC). Phase scrambling is used for visual information protection of templates. The effect of scrambling on POC values is analyzed. As a result, the peak value, which is used as a measure of signal congruence, of the POC between nonscrambled signals can be estimated by observ...
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