Hybrid approach to transmit a secrete image

Today data security is very important and high priority topic. With rapid growth in communication and computer technologies, there is a huge data transaction in mobile, internet, TV, teleconferencing, telemedicine and military applications. For all these applications we need a security. Encryption is one of way to give the security for data; in this regard we propose a hybrid approach for partial image encryption. Proposed hybrid approach involves rearranging the mapping image according to SCAN patterns and selecting a pixel value of rearranged mapping image based on the mapping function. Novelty of proposed technique lies in converting the pixel value of original image into a row and column values of mapping image. Experiment is conducted for various SCAN pattern of mapping image using MATLAB.