Secured digital image watermarking with discrete cosine transform and discrete wavelet transform method

In this paper, we suggested a new secured digital watermarking technique that can be used for the data validation. The suggested method is secure and efficient. The secured digital watermark is added by the hybrid method for which we have used combination of discrete cosine transform (DCT) and discrete wavelet transform (DWT) methods along with cryptographic technique (Arnold Transform). This technique provides strong robustness and perception transparency to the watermarked image and original image against different kind of attacks like cropping, noise and scaling. We have also compared these results with Least Significant Bit and Discrete Cosine methods.