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Resilient Digital Image Watermarking Using A Dct- Component Perturbation Model, Jonathan Blackledge, Oleksandr Iakovenko
Resilient Digital Image Watermarking Using A Dct- Component Perturbation Model, Jonathan Blackledge, Oleksandr Iakovenko
Books/Book chapters
The applications of the Discrete Cosine Transform (DCT) for Computer Generated Imagery, image processingand, in particular, image compression are well known and the DCT also forms the central kernel for a number ofdigital image watermarking methods. In this paper we consider the application of the DCT for producing a highlyrobust method of watermarking images using a block partitioning approach subject to a self-alignment strategyand bit error correction. The applications for the algorithms presented include the copyright protection of imagesand Digital Right Management for image libraries, for example. However, the principal focus of the researchreported in this paper is on the …
Economic Challenges And Optimisation Of Ocean Energy Electrical Systems, Fergus Sharkey
Economic Challenges And Optimisation Of Ocean Energy Electrical Systems, Fergus Sharkey
Books/Book chapters
No abstract provided.