Robust Watermarking of Digital Color Pictures using the DT-CWT and DFT

Image watermarking is the process of invisibly hiding secret data in the cover image to preserve the original image’s copyright. In this paper, we offer a new framework for robust digital watermarking for colour photos that combines the Discrete Fourier Transform (DFT) and Dual Tree Complex Wavelet Transform (DTCWT). The cover image is initially separated into three channels: Y, U, and V. The Y channel is then converted using DFT and partitioned into ring forms. Using an embedding key, we create pseudo-random patterns to represent the watermark. These patterns are additionally modified and partitioned. The pattern selection watermark is then integrated into the DFT coefficient rings. We also incorporate a rectification watermark into the U channel,DTCWT is used to achieve geometric distortion robustness. Watermark identification and extraction can be completed effectively on the recipient’s end. Compared to earlier techniques, the proposed method is more effective at preserving image quality. Meanwhile, the robustness against typical attacks is stronger