Hiding Text In Digital Images Using Steganography Techniques:
Which proposes a new algorithm for hiding text in gray and color images using Discrete Cosine Transformation technique (DCT). It maximizes the payload while being invisible and robust against slight attacks. Our embedding scheme is based on the observation that the mean value of the block is a robust attribute in the stego-images. The message is embedded depends on this attribute and can meet the robustness requirements of the steganographic algorihm.