Information Hiding Scheme Based on Replace Function and Wavelet Transform

This paper proposes an information hiding method that exploits the Integer Wavelet Transform (IWT) and Replace Function. First, the cover image is transformed into frequency coefficients through the IWT. Then, Run-Length Encoding (RLE) technique is used to compress the secret message. Furthermore, the compression result is embedded into the frequency coefficients by using the Modulus Function and Least Significant Bit (LSB) Matching. When the receiver receives the stego image, the compression result can be obtained from the frequency coefficients of the stego image by using the Modulus Function and Binary Function. In the experimental result, embedding capacity of the secret message and the quality of the stego image are good.