Watermarking in the JPEG 2000 domain
There are several advantages to combine, at one end, the image coding and watermark insertion operations and, at the other end, the image decoding and watermark extraction. We describe a spread-spectrum-based watermarking technique in the framework of the JPEG 2000 still image compression. We also show that, by re-using the JPEG 2000 wavelet domain for watermark embedding, the proposed watermarking scheme exhibits a high robustness with respect to attacks which may occur in many applications.