Steganography is an art of hiding the existence of secret information by embedding it in a cover and hence preventing the unauthorized access of confidential information.This paper proposes a novel approach of encrypting the plain text into cipher text and embedding it into a color image.Encryption is done in two stages, during first stage it is encrypted by Ceaser cipher technique and in the second stage it is encrypted based on chaos theory. The cipher text obtained after encryption is embedded using 3, 3, 2 LSB replacement algorithm.
Non-photorealistic rendering is a broad class of techniques for creating art from digital pictures. One or more digital filters is applied to create an apparent pencil sketch, watercolor, or in this study a design for stained glass. A collection of points that are the centers of weighted Voronoi tilings are evolved to minimize the variance of the variance in luminance within each tile. The average color within each tile is computed. A fractal model of stained glass is then run to create a stained glass texture with a similar average color to that in the tile. Tile boundaries are rendered black, providing the "lead" enclosing the stained glass panes. The stained glass textures are then applied within their corresponding tiles to yield a final image. Evolution of the tile centers is a challenging problem with an expensive fitness evaluation. On the order of 500-3000 real parameters representing the tile centers and their associated weights are optimized. A modified evolution strategy is used to perform this optimization.
One of the most wanted wireless networks is Mobile Ad hoc Network (MANET). MANET can configure easily without using any facility which one is available at present as an infrastructure oriented wired or wireless network. It is one of the infrastructures less network consist of mobile devices. Individually each and every device in the Mobile ad hoc network will act as a router as well as node which provide the flexibility in the physical topology, optimal routing and data communication.In this paper, A Security improved AODV (SIm AODV) routing protocol is proposed for Ad-hoc networks which typically suits to resolve the security issues like Link Failure, Black Hole Attack, and Malicious Node Intrusion Attack. The proposed SIm AODV algorithm is incorporated and evaluate with OMNetpp 4.3 simulation.
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