A Parameterized Halfband Filterbank Design for Image Encryption
Vivek P Khalane, Umesh S. Bhadade · 2018
This paper introduces a peculiar approach for the design of almost close reconstruction based on discrete wavelet transform using multi wavelet transform (5/3 filter). Most of the time it is necessary to prevent the transmitted real time signal against unauthorized information access. In this paper, the input image is decomposed using 1-D wavelet transform. As a result, we get the wavelet decomposition vector C which contains approximation coefficient, detail coefficient and corresponding bookkeeping vector S. The approximation coefficients are readjust by performing transformation to produce encrypted image. The wavelet decomposition vector and bookkeeping vector is key parameter in the encryption and decryption process. The proposed algorithm is designed such that it is difficult to brake and looking at encyption time, computational complexity is simple.