A secure watermarking for JPEG-2000

In this paper, we propose a discrete wavelet transform (DWT) based watermarking method, which can be conveniently integrated in up-coming JPEG-2000 baseline. Conventional DWT based watermarking techniques insert a watermark into the coefficients after the transform completed, while the proposed method inserts a watermark into the coefficients obtained from ongoing process of lifting for DWT. The proposed method allows us to determine selectively frequency characteristics of the coefficients where watermark is embedded, so that the watermark cannot be easily removed or altered even when filter-banks for DWT was known. Through the simulations, we show that the proposed method is more secure and more robust against various attacks than the conventional DWT based watermarking.