Measuring Watermarking Robustness Using Fractal Dimensions
نویسندگان
چکیده
The authors present a new approach for measuring watermarking robustness in the case of color attacks of rgb-color watermarked images. This approach is applied to evaluate the robustness of our algorithm to watermark an rgb-color image by modifying pixels colors. It is based on Kolmogorov-Smirnov test and it uses fractal dimensions to quantify modified color pixels. The authors test smooth and textured images, smooth and textured marks and 6 types of attacks: JPEG, Median, Noise, PSNR, RML, ROT.
منابع مشابه
Proposing an effective approach for Network security and multimedia documents classically using encryption and watermarking
Local binary pattern (LBP) operators, which measure the local contrast within a pixel's neighborhood, successfully applied to texture analysis, visual inspection, and image retrieval. In this paper, we recommend a semi blind and informed watermarking approach. The watermark has been built from the original image using Weber Law. The approach aims is to present a high robustness and imperceptibi...
متن کاملIntelligent scalable image watermarking robust against progressive DWT-based compression using genetic algorithms
Image watermarking refers to the process of embedding an authentication message, called watermark, into the host image to uniquely identify the ownership. In this paper a novel, intelligent, scalable, robust wavelet-based watermarking approach is proposed. The proposed approach employs a genetic algorithm to find nearly optimal positions to insert watermark. The embedding positions coded as chr...
متن کاملIntroducing Capacity Surface to Estimate Watermarking Capacity
One of the most important parameters in evaluating a watermarking algorithm is its capacity. Generally, watermarking capacity is expressed by bits per pixel (bpp) unit measure. But this measure does not show what the side effects would be on image quality, watermark robustness and capacity. In this paper we propose a three dimensional measure named Capacity surface which shows the effects of ca...
متن کاملRobust Chaos Based Image Watermarking Scheme for Fractal-Wavelet
Recently, chaos based mapping has widely been applied for image watermarking due to their inherent cryptographic features. Fractals are one of the robust techniques used for image compression. When a Chaotic map is used in conjunction with Fractal-Wavelet, efficiency may be improved in the process of image watermarking. In this paper, Chaos based watermarking method is proposed in cascade with ...
متن کاملMicrosoft Word - Robust Fractal Watermarking on Continue-bsliao
In this study, a novel fractal watermarking is proposed to enforce the robustness of data hiding against possible attack. The proposed fractal watermarking is mixed of three different approaches: inner/exterior search space, odd/even search space, and two classes of isometric search space. During watermark extraction, the watermark bit is always determined by the result of a voting mechanism on...
متن کامل