background: above all methods effective learning results from decent training, acquired in the proper environment and encouraging creative methods. computer-assisted training by educational software is considered a fundamental measure to improve medical and dentistry education systems. this study aims to design and assess fixed dental prostheses via 2 multimedia instructional contents at the gu...

Template and database are critical parts of biometric systems. Attacker usually afflict biometric template. There can be various attacks on different modules of biometrics system and communication links among them. Securing templates from these attacks have become very important or imperative issue. Security is achieved by methods of cryptography, which deals with encryption of data. Encryption...

As a promising broadband wireless technology, WiMax has many salient advantages over such as: high data rates, quality of service, scalability, security, and mobility. Many sophisticated authentication and encryption techniques have been embedded into WiMax but it still exposes to various attacks in. In this paper, three proposed chaos encryption techniques were described for video transmission...

The advent of internet has paved the way for transmitting more and more information over the internet in a very less time and multimedia technology is also not untouched with it. Audio, images & other multimedia are being transmitted over the internet. The traditional encryption schemes appear not to be ideal for image applications, due to some intrinsic features of images such as bulk data cap...

Nowadays the security of multimedia data storage and transfer is becoming a major concern. The traditional encryption methods such as DES, AES, 3-DES, RSA cannot be utilized for since include an enormous quantity redundant data, very large size, high correlation elements. Chaos-based approaches have necessary characteristics dynamic encryption. In context dynamical systems, chaos extremely depe...

This paper presents a new method for encryption of color images based on a combination of chaotic systems, which makes the image encryption more efficient and robust. The proposed algorithm generated three series of data, ranged between 0 and 255, using a chaotic Chen system. Another Chen system was then started with different initial values, which were converted to three series of numbers from...

A discrete wavelet transform (DWT) is any wavelet transform for which the wavelets are discretely sampled. As with other wavelet transforms, a key advantage it has over Fourier transforms is temporal resolution as it captures both frequency and location information. DWT filter provides a high compression ratio and image reconstruction quality so as to serve the end user requirements. Some other...

Nowadays there is development in the multimedia and network technologies. That’s why the privacy and security becomes the major issues since the multimedia is transmitted openly over the network .so that Along with privacy and security, the space of s storage is also an important point that can’t be missed. So that, provide the privacy and security to the multimedia, encryption work as the simi...