To Evaluate Robustness of the Tacit Orientation: Dual Digital Image Watermarked Scheme

The main objective of this thesis is to develop and implement dual Digital Image Watermarking scheme, which is robust and can sustain attack rotational on image file. In the proposed scheme two watermarking scheme are used, so that by combined effect of both watermarking scheme can give a robust watermarking scheme. The feature of the proposed scheme is quality of a watermarked images, the peak signal to noise ratio was used. To evaluate the robustness of the tacit orientation, the watermarked image was examined against various kinds of attacks like rotating Attack, scaling attack & filtering like median filter. Peak signal Noise Ratio value of various geometric attacks (Rotation), noising attack (Gaussian noise), de-noising attack (Average filtering), format-compression attack (JPEG compression) and histogram equalization, contrast adjustment. In this thesis put here a breed digital image watermarking technique which takes the use of integer wavelet transform, Singular Value Decomposition, Matrix Norm Quantization, Discrete Cosine Transformation Modul-2 approach and encrypt the watermark and hence enhance the security increasing payload.