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In this paper, we present a novel method for adaptive fusion of multimodal surveillance images, based on Non-Subsampled Contourlet Transform (NSCT), which has an improved performance over Visual Sensor Networks (VSN). In sensor networks, energy consumption and bandwidth are the main factors that determine the lifetime of the sensors. In order to reduce the(More)
Image encryption needs to be secure by resisting statistical attacks and other types of attacks. In this paper, we propose an algorithm, which applies nonlinear s-box byte substitution. Then, it performs a shuffling operation partially dependent on the input data and uses the given key. The proposed algorithm was implemented and tested with different data,(More)
The encryption standards such as DES (Data Encryption Standard), AES(Advanced Encryption Standard) and EES (Escrowed Encryption Standard) are widely used to solve the problem of communication over an insecure channel' [10]. Network security threat is an onerous issue that has captured lot of attention in recent times. Data transmissions between computers in(More)
—Long Propagation Delay is the major drawback in underwater sensor networks. In this paper, we use JSL algorithm, which synchronizes time and localization of sensor nodes, and ACO algorithm to find optimal path to forward packets from anchor node to base station using object node. Furthermore, by combining both the algorithms, we can reduce the propagation(More)
An autonomous mobile robot system that can navigate from a given start point to an end point has been developed. It carves out a path and builds a two dimensional grid based map using the combination of wavefront algorithm and A∗ search algorithm for a given state of the environment. The robot can detect obstacles on its path and change its course to(More)
— Cloud applications are deployed in remote data centers (DCs) where high capacity servers and storage systems are located. A fast growth of demand for cloud based services results into establishment of enormous data centers consuming high amount of electrical power. Energy efficient model is required for complete infrastructure to reduce functional costs(More)
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