open access

https://hdl.handle.net/2115/39684

A Theoretical Analysis of One-time Key Based Phase Scrambling for Phase-only Correlation between Visually Protected Images

英語

2009-10-04

Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee

Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference

250-253

APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Poster session: Image, Video, and Multimedia Signal Processing 1 (5 October 2009).

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 non-scrambled 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.

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