The necessity for copyright protection, ownership verification, and other issues for digital data are
getting more and more value these days. For the rapid revolution in digital multimedia and the ease of
creating similar and unauthorized data, the digital data can be copied or manipulated or distributed. So
it is necessary to watermark the media content for tamper proofing or quality assessment or copy
control. In this paper we propose a JPEG2000 compression. The compression standard is chosen such
that it provides higher compression ratio and the compressed byte stream are randomized by the
encryption algorithm. In our paper watermarking was done in the compressed – encrypted domain. We
use different watermarking techniques for this. Attempting to watermark such a randomized bit stream
can cause a dramatic degradation of the media quality. Thus it is necessary to choose an encryption
scheme that is both secure and will allow watermarking in a predictable manner in the compressed
encrypted domain. The projected method is a robust watermarking algorithm to watermark JPEG2000
compressed and encrypted images (grayscale) of size 512×512. The encryption algorithm in this paper
uses stream cipher. While the estimated technique embeds watermark in the compressed-encrypted
domain, and the extraction of watermark can be done in the encrypted domain. The proposed algorithm
also conserves the confidentiality of data as the embedding process can be done on encrypted data. The
planned method can examine the PSNR and the security of the proposed algorithm, using the
watermarking scheme: Spread Spectrum (SS) and Scalar Costa Scheme Quantization Index Modulation
Real Time Impact Factor:
Pending
Author Name: Bhagyashri D. Shende, Prof. Mrs. R. J. Shelke
URL: View PDF
Keywords: JPEG2000 Compression standard, Stream Cipher algorithm, Watermarking Technique such as SS (Spread Spectrum), Scalar Costa Scheme Quantization Index Modulation (SCSQIM).
ISSN: 2394-3696
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