1. Watermarking method based on dct intended for high embedding capacity
Authors : Sahil G. Mujawar, Amar A. Dum
Pages : 270-277
DOI : http://dx.doi.org/10.21172/1.83.041
Keywords : Discrete cosine transform,High embedding capacity,Image Watermarking Abstract :In digital image watermarking, for applications like covert communication, high embedding capacity is desired. Hence, new method is proposed, which consists of two parts – embedding part and detection part. In first part, first step is dividing image into small blocks. Then DCT is applied to each block and embed the watermark data into image block. Here, the secret key is used to randomly select the DCT coefficients from middle frequency area of image. A secret key is used for security purpose. In detection part, the detection matrices are formed from received image to extract the watermark data. The proposed method requires only 3 coefficients to hide 2 watermark bit, normally it can achieve high embedding capacity.
Citing this Journal Article :Sahil G. Mujawar, Amar A. Dum , "Watermarking method based on dct intended for high embedding capacity", Volume 8 Issue 3 - May 2017, 270-277
Click here to Submit Copyright Takedown Notice for this article.