19-08-2014, 02:45 PM
The need of securing data before transmission was a necessity even during early ages, but the techniques used were nonscientific. In this 21st century where evolution of each new technique is followed by its breakthrough, we need to develop a system, which makes our data highly secured. The huge success of Internet allows the transmission, wide distribution and access of electronic data in an effortless manner. Content providers are faced with the challenge of how to protect their electronic data.
The need of securing data before transmission was a necessity even during early ages, but the techniques used were nonscientific. In this 21st century where evolution of each new technique is followed by its breakthrough, we need to develop a system, which makes our data highly secured. The huge success of Internet allows the transmission, wide distribution and access of electronic data in an effortless manner. Content providers are faced with the challenge of how to protect their electronic data. One such technique of data hiding is "steganography". Data hiding in multimedia is a process of secretly embedding information into data sources such as image video or audio signals without changing the perceptual quality of data source. In this project we will transmit the data after hiding it in still images. This image produced is called as "stego image". According to human perception we can classify watermarks in four classes as invisible, visible robust watermark, invisible fragile and dual. This process can be implemented through both software and hardware. Our aim in this project is as follows
1. To develop software for producing invisible fragile watermarks using VHDL
language.
2. We will develop hardware system that can insert both robust as well as invisible fragile watermark in any image using FPGA as a platform.
This type of data hiding technique has a lot of applications such as in data authentication and captioning, copyright protection of electronic documents and media. This hardware will be designed to give real time performance and consequently has high efficiency, while maintaining high fidelity through careful analysis of word length and other factors.