A Hybrid Method for Color Image Steganography in Spatial and Frequency Domain
A hybrid method for color image steganography is suggested to conceal a secret data into the cover image in the spatial and frequency domain. In this method, Lempel–Ziv–Welch (LZW) compression is used to obtain a low bit rate; Also Linear Feedback Shift Register (LFSR) technique is used to enhance the security of the scheme. In the embedding process in spatial domain, a K-means clustering and EA algorithms are used for secret data embedding. Also in the embedding process in frequency domain, a Coefficients selection and frequency hopping algorithm (CSFH) and Adaptive Phase Modulation mechanism (APM) are used for secret data embedding. Abilities of the proposed method are high security, because of using a hybrid method (spatial and frequency domain) and Data Encryption Standard (DES).
Keywords: steganography; Linear Feedback Shift Register (LFSR); Data encryption standard (DES); K-means algorithm; Discrete Fourier Transform; spatial domain; frequency domain
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