QIM watermarking combined to JPEG2000 part I and II.

On the one hand, lossy image compression, especially at very low bit rate, is considered as a strong attack for watermark process. On the other hand, with the blossoming demand for efficiently storing and transmitting digital visual information, lossy compression has been increasingly vital. This leads us to combine a watermarking scheme based on QIM with a JPEG2000 coder. Among the coding schemes supported by the standard, we select two coders derived respectively from part I and II. Comparative tests have been made in order to decide which of these coders is more suitable to be combined with our watermark scheme