An Unequal Image Privacy Protection Method Based on Saliency Detection

Table 5

Summary and comparison of the current encryption algorithms.

Algorithms	Encryption types	Algorithms used	Advantages	Limitations
Chen et al. [17]	Full encryption	Self-adaptive permutation-diffusion and DNA random encoding	Enhancing the plaintext attack resistance	Consuming much time and requiring high computation
Wen et al. [41]	Full encryption	DNA sequences and chaotic systems	Enough security to protect image	Complexity and requiring high computation
Wang et al. [42]	Selective encryption	Compressed sensing and data hiding	Degrading the visual quality level and saving computation	The visual information in image may have security issue
Khan and Ahmad [43]	Selective encryption	Chaotic system	Lower overhead and more efficiency	2D map system may not get enough security
Proposed	Unequal encryption	DNA sequences and compressed sensing	Saving computation and storage	Increasing the execution speed