An Efficient Image Encryption Technique by Reserving Room Before Encryption
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 6
Abstract
In this paper, a modified version of Zhang’s reversible data hiding technique in encrypted image is proposed. In the original method, average value of neighboring pixels is used for block smoothness calculation which fails to give good performance. In proposed work, an enhanced function for measuring smoothness is adopted to reduce the bit error rate. The simulation results show that the performance of proposed method outperforms Zhang’s work. For Instance, when block size is 8×8, bit error rate of Lena image in Zhang’s method is 1.21% whereas in proposed scheme it reduces to 0.85%. Therefore, by using proposed system more information can be sent without any error.
Authors and Affiliations
Pradeep Kumar, Baswaraj Gadgay, Veeresh Pujari
Keywords
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