COMPRSSION AND ENCRYPTION TECHNIQUES FOR SURVEILLANCE IMAGES

Abstract

Security of information in Armed Forces attains the Prime importance in case of Surveillance Image Data Transfer. Therefore, while transmitting vital information there is no compromise in terms of cost. However, the communication Networks in field locations has at times added constrains of Data Bandwidth. For the same, there exists an urgent requirement to develop methods and means to provide mix of various techniques to answer some or all of the following challenges. They include compression of image, reliable security from brute forces as well as fast and efficient means of communication. The encryption method based on position confusion and pixel substitution change compression ratio greatly. However, JPEG Compression and Encryption Technique employing DCT provides the answer. In addition, JPEG 2000 scheme is also being Explored.