RST Robust Watermarking Schema Based On Image Normalization and DCT Decomposition
نویسندگان
چکیده
منابع مشابه
Robust Colour Image Watermarking Scheme Based on Feature Points and Image Normalization in Dct Domain
Geometric attacks can desynchronize the location of the watermark and hence cause incorrect watermark detection. This paper presents a robust colour image watermarking scheme based on visually significant feature points and image normalization technique. The feature points are used as synchronization marks between watermark embedding and detection. The watermark is embedded into the non overlap...
متن کاملRobust Digital Image Watermarking Based on Joint DWT-DCT
In this paper, a new robust digital image watermarking algorithm based on Joint DWT-DCT Transformation is proposed. A binary watermarked logo is scrambled by Arnold cat map and embedded in certain coefficient sets of a 3-level DWT transformed of a host image. Then, DCT transform of each selected DWT sub-band is computed and the PN-sequences of the watermark bits are embedded in the middle frequ...
متن کاملA DCT Domain Robust Image Watermarking Based on Luminance Parameters
Embedding a digital signal with information which cannot be removed easily is called „Digital watermarking‟. In visible watermarking of images, a secondary image is embedded in a primary image such that watermark is intentionally perceptible to human observer.The present work aims at visible watermarking algorithm based on luminance parameters in DCT domain. Visible watermarking is a type of di...
متن کاملA Normalization-based Robust Image Watermarking Scheme Using SVD and DCT
Digital watermarking is one of the techniques for copyright protection. In this paper, a normalization-based robust image watermarking scheme which encompasses singular value decomposition (SVD) and discrete cosine transform (DCT) techniques is proposed. For the proposed scheme, the host image is first normalized to a standard form and divided into non-overlapping image blocks. SVD is applied t...
متن کاملA Robust Digital Image Watermarking Scheme Based on DWT
In this paper a wavelet-based logo watermarking scheme is presented. The logo watermark is embedded into all sub-blocks of the LLn sub-band of the transformed host image, using quantization technique. Extracted logos from all sub-blocks are merged to make the extracted watermark from distorted watermarked image. Knowing the quantization step-size, dimensions of logo and the level of wavelet tra...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Malaysian Journal of Computer Science
سال: 2007
ISSN: 0127-9084
DOI: 10.22452/mjcs.vol20no1.7