出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：This paper presents an optical image encryption system based completely on amplitudemodulation, phase modulation in the discrete Fourier transform and modified chaotic logisticmap. Amplitude modulation and phase modulation are accomplished by the use of spatial lightmodulator (SLM). SLMs are normally used to control incident light in amplitude-best, phasebestor the mixture (amplitude-phase). The random amplitude modulation based on a chaoticBaker map is carried out in time domain, while the random phase modulation is accomplishedin the frequency domain. In this paper, we proposed a technique to regulate and enhanceprotection in a chaotic logistic map method leading to increased variety of key space of thelogistic map. This causes our encryption system to become exceptionally sturdy against brutepressure. An exhaustive analysis of the proposed encryption system is undergone and showspositive results in encryption metrics when compared to several different photo encryptiontechniques. The analysis demonstrates the highly valued security and immunity to noise of thephotograph encryption. The proposed modified logistic map with amplitude and phasemodulation is suitable for real-time application.
