A Frequency Domain Based Watermarking Scheme with Spatial Repetition Coding

摘要

In this paper, we propose a frequency domain based watermarking scheme. We embed the watermark data by altering the magnitude of the Fourier coefficients of a sub-image of the given image. The embedded data can be extracted by a denoising process without the knowledge of the original image. Our tests show that our watermarking scheme is robust to various kinds of attacks, such as JPEG, blurring, sharpening, and GIF compression/decompression.