Visible dual watermarking using wavelet transform

الملخص EN

Image watermarking is widely used as a tool for copyright protection and authentication.

We propose to embed two visible watermarks in a host image for enhancing protection and strength.

If one of watermarks is tampered, the other watermark is used as a support to the first one.

We propose three watermarking schemes called visible dual watermarking using wavelet transform; two schemes are working in wavelet domain and the other is a mixture of spatial and wavelet domains.

The Proposed watermarking method is robust against attacks like DCT, DWT and JPEG compression schemes, and some geometric manipulation like image resizing.