A robust image watermarking technique based on quantization noise visibility thresholds
نویسندگان
چکیده
منابع مشابه
Robust image watermarking technique based on quantization noise visibility thresholds
A tremendous amount of digital multimedia data is broadcasted daily over internet. Digital data being very quickly and easily duplicable, intellectual property rights protection techniques, appeared about fifty years ago (see (14) for an extended review). Digital watermarking was born. Since its birth, many watermarking techniques appeared, in all possible transformed spaces. However, an import...
متن کاملA robust image watermarking technique based on quantization noise visibility thresholds
A tremendous amount of digital multimedia data is broadcasted daily over the internet. Since digital data can be very quickly and easily duplicated, intellectual property right protection techniques have become important and first appeared about fifty years ago (see [16] for an extended review). Digital watermarking was born. Since its inception, many watermarking techniques have appeared, in a...
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 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 کاملA Robust Tree Quantization Image Watermarking Technique Based on Qualified Significant Even Wavelet Tree (QSEWT)
Recently to improve the compression of significance maps of wavelet coefficients, a new data structure called Wavelet Tree (WT) is introduced. The present paper extends the study on wavelet trees and developed new concept called Qualified Significant Even Wavelet Tree (QSEWT) to address the problem of 1) obtaining the best image quality for a given bit rate, and 2) to render the watermark more ...
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ژورنال
عنوان ژورنال: Signal Processing
سال: 2007
ISSN: 0165-1684
DOI: 10.1016/j.sigpro.2006.11.009