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Rapid growth of computer network scales has made traffic matrix estimation essential in network management. It can be used in load balancing, traffic detecting and so on. Since traffic should be considered temporally and spatially, prediction is complicated. Tracking dynamic changes of traffic, reducing estimation errors and increasing robustness to noise are factors which should be considered in...
This paper proposes a method for detecting two or more straight lines from an edge image in a similar way of Hough transform. The method consists of labeling of each edge point to presumed straight lines and RANSAC algorithm to evaluate each label. The Genetic Algorithm (GA), an efficient combinatorial optimization algorithm, is used for the labeling process, and the RANSAC is effective for high accuracy...
Audio Steganography is a method that ensures secured data transfer between parties normally in internet community. In this paper, we present a novel, principled approach to resolve the remained problems of substitution technique of Audio Steganography. We use most powerful encryption algorithm (RSA) to encrypt message in the first level of security, which is very complex to break. In the second level,...
This paper introduces a new method of adaptive blind digital image watermarking in spatial domain. Watermarking is a way to hide secret information in a cover image or host medium. Amount of information to hide in the cover image is limited because there is a trade-off between imperceptibility and payload of the data to hide. So increasing the payload in the cover image while watermark remain imperceptible...
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