Comparison of Bio-inspired and Transform based Encryption Algorithms for Satellite Images

Since satellite images are very important in communication, the paper gives a comparison of two algorithms, which is, one using radial Hilbert transform and other using bio-inspired using chaotic maps. To provide security against vulnerable attacks, both algorithms use scrambling. Experimental results show that bio-inspired algorithm has a better entropy value whereas transform based algorithm has a short encryption time compared to other. Both the algorithms are sensitive to change in key values.