Image steganography by wavelet matching

摘要: We introduce a new steganography method for embedding message bits into images by utilizing the mathematical relation between image and transformation domains. The proposed matches bit sequences with coefficients of discrete Haar wavelet (DHWT) modifying pixels related to those coefficients. matching process is applied separately each block, which defined respect dimension transform. algorithm needs change one pixel out all in block represent sequence be embedded. A minimum amount degradation provides better stego-image quality than the-state-of-the-art methods. In addition, experiments performed on different databases show that more robust against both blind targeted steganalysis methods, especially low payload capacities.