Data hiding under fractal image generation via Fourier filtering method

This paper presents a new data hiding scheme under fractal image generation via Fourier filtering method for Computer Graphics (CC) applications. The data hiding operations ale achieved in the frequency domain and a method si milar to QAM used in digital communication is introduced for efficient embe dding in order to explore both phase and amplitude components simultaneousl y. Consequently, this scheme enables us not only to generate a natural terr ain surface without loss of fractalness analogous to the conventional schem e but also to embed larger amounts of data into all image depending on the fractal dimension. This scheme ensures the correct decoding of the embedded data under lossy data compression such as JPEG by controlling the quantiza tion exponent used in tho embedding process.