Digital Watermarking Technique using Robust Quantization Index Regulation (RQIR)
نویسندگان
چکیده
منابع مشابه
Robust Digital Image-Adaptive Watermarking Using BSS Based Extraction Technique
In a digital watermarking scheme, it is not convenient to carry the original image all the time in order to detect the owner's signature from the watermarked image. Moreover, for those applications that require different watermarks for different copies, it is preferred to utilize some kind of watermark-independent algorithm for extraction process i.e. dewatermarking. Watermark embedding is perf...
متن کاملAdaptive Wavelet Quantization Index Modulation Technique for Audio Watermarking
The quantization index modulation (QIM) that is often used in watermarking can provide a tradeoff between robustness and transparency. In this paper, we propose a robust audio watermarking technique which adopts the wavelet QIM method with adaptive step sizes for blind watermark extraction. Since wavelet transform offers both temporal and frequency resolutions, it is suitable for audio signal p...
متن کاملPreprocessed and postprocessed quantization index modulation methods for digital watermarking
Quantization index modulation (QIM) methods, a class of digital watermarking and information embedding methods, achieve very e cient trade-o s among the amount of embedded information (rate), the amount of embedding-induced distortion to the host signal, and the robustness to intentional and unintentional attacks. For example, we show that against independent additive Gaussian attacks, which ar...
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 کاملRobust 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 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: International Journal of Electronics and Communication Engineering
سال: 2015
ISSN: 2348-8549
DOI: 10.14445/23488549/ijece-v2i1p101