Segmentation and Encryption of Satellite Images Using Stream Cipher Algorithm

Information security plays one of the very important roles in the field of emergent information and communication technology. The applications such as medical images and satellite images needs the security only in the required portion, which contains the useful information .To improve the perception of surroundings and to monitor the earth’s surface, remote sensing is used and it led the way for progress in information technologies. This paper explains the concept of enhancing the resolution of an image to improve the number of pixels, which is used to represent the details of an image and then segmenting the input image by using canny edge detector and encrypting the segmented image by using RC4 stream cipher algorithm. This encryption algorithm provides the security by XOR the plaintext and key. Moreover, RC4 algorithm (stream cipher) is considered to be providing a best result in terms of security, accuracy, noise, distortion less images by the varying features like variable key size and packet size.