A Reversible Data Hiding Techniques For Improved Embedding Capacity Using Image Interpolation

High capacity steganography is still challenging today in the field of information security. The demandfor the exact retrieval of the cover media from stego-image after the extraction of secret data is also increasing.Using reversible information hiding techniques, the cover image can be recovered at the time of extraction ofsecret messages. Two techniques are proposed in this paper. In the first technique, the image is interpolated usinga new interpolation technique and the second technique uses a High Capacity Reversible Steganography usingMulti-layer Embedding (CRS) method for image interpolation. In both the techniques, the secret data areembedded in the cover image by Exclusive OR (XOR) operation. The proposed techniques give high embeddingcapacity and preserve image quality. The experimental results show that the proposed techniques offer betterresults over the existing techniques.