Volume 8 Issue 3 - May 2017

  • 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", https://www.ijltet.org/journal_details.php?id=914&j_id=3763, Volume 8 Issue 3 - May 2017, 270-277, #ijltetorg