In this paper, an optical asymmetric-image verification system based on the joint transform correlator architecture is proposed. An additional phase mask is attached to the spatial light modulator that displays the joint power spectrum as the amplitude information, to improve the system security and
โฆ LIBER โฆ
Image displacement based on phase-encoded reference joint fractional transform correlator
โ Scribed by Peng Ge; Qi Li; Huajun Feng; Zhihai Xu
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 844 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0030-3992
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A new optical image encryption method based on anamorphic fractional Fourier transform (FRT) and phase-shifting interferometry (PSI) is proposed in this paper. The input two-dimensional image to be encrypted is anamorphic fractional Fourier transformed with different orders in the two orthogonal dir