Twin Peaks : The Histogram Attack to
نویسنده
چکیده
In this paper we present an attack to xed depth image watermarks. The attack is based on histogram analysis of a watermarked image. With this attack, the watermark can often be reconstructed from just a few images, without using the detector.
منابع مشابه
Dynamic Threshold Selection for the Classification of Large Water Bodies within Landsat-8 OLI Water Index Images
Surface water distribution extracted from remote sensing data has been used in water resource assessment, coastal management, and environmental change studies. Traditional manual methods for extracting water bodies cannot satisfy the requirements for mass processing of remote sensing data; therefore, accurate automated extraction of such water bodies has remained a challenge. The histogram bimo...
متن کاملMultilevel Color Histogram Representation of Color Images by Peaks for Omni-Camera
This paper proposes the use of a vector of color histogram peaks as an efficient and effective way for many image indexing problems. It shows that histogram peaks are more stable than general histogram bins when there are variation of scale and/or scale. We also introduce the structure of a room recognition system which applies this indexing technique to omni-directional images of rooms. Experi...
متن کاملColor Histogram-Based Image Segmentation
An algorithm is presented to segment a color image based on the 3D histogram of colors. The peaks in the histogram, i.e., the connected components of colors with locally maximal occurrence, are detected. Each peak is associated a representative color, which is the color of the centroid of the peak. Peaks are processed in decreasing occurrence order, starting from the peak with the maximal occur...
متن کاملEndogeneous Discounting via Wealth, Twin-peaks and the Role of Technology
The article gives new answers to the two following questions: One, what can be a potential source of the twin-peaks of economic growth? Two, why were some of the countries that were believed to belong to the group of low steady state countries (like Taiwan, South Korea, Japan, etc.) able to reach a convergence path which led them to a high steady state? We endogenize the time preference rate vi...
متن کاملFace Recognition Algorithm Based on Orientation Histogram of Hough Peaks
In this paper we propose a novel face recognition algorithm based on orientation histogram of Hough Transform Peaks. The novelty of the approach lies in utilizing Hough Transform peaks for determining the orientation angles and computing the histogram from it. For extraction of feature vectors first the images are divided into non overlapping blocks of equal size. Then for each of the blocks th...
متن کامل