A Blind Digital Image Watermarking using Joint DCT-DWT and Twin Encoding Methodology
Poonam H. Mahajan1, Pramod B. Bhalerao2

1Ms. Poonam H. Mahajan, PG Scholar , Department of Computer Science and Engineering, DIEMS, Aurangabad (Maharashtra), India.
2Mr. Pramod B. Bhalerao, Assistant Professor, Department of Computer Science and Engineering, DIEMS, Aurangabad (Maharashtra), India.
Manuscript received on 12 November 2014 | Revised Manuscript received on 22 November 2014 | Manuscript Published on 30 November 2014 | PP: 22-26 | Volume-4 Issue-6, November 2014 | Retrieval Number: F1850114614/14©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Digital Image Watermarking is that the method that embeds knowledge known as a watermark or digital signature or tag or label into a transmission object such watermark may be detected or extracted later to form associate assertion regarding the ob-ject. There square measure varied techniques with that the method of watermarking may be performed. we’ve summarized these techniques in brief. In this work, we tend to square measure presenting few recent watermarking algorithms. One ofthem may be a sturdy digital image watermarking algorithmic program supported Joint DWT-DCT Transformation.This methodology exploits strength of 2 common frequency domains method; DCT and DWT, to get more physical property and hardiness. the thought of inserting watermark within the combined rework is predicated on the very fact that joint rework may eliminate the downside of every alternative. then, associate elective watermarking methodology may be obtained. the opposite is powerful Blind Digital Image Watermarking mistreatment DWT and twin coding Technique. This algorithmic program exploits the random sequence generated by Arnold and Chaos transformations. separate ripple transformation of third level decomposition is employed to convert the image into its frequency domain.
Keywords: Digital Image Watermarking, Blind Digital Image Watermarking, Twin Coding, Arnold Rework, Chaos Rework, DWT, DCT

Scope of the Article: Image Security