Enhancing Image Security by Prediction Error Clustering and Random Permutation Methodology

In practical scenarios, encryption should be performed before the image compression. If encryption is not performed then there may be the chances of stealing the information. Therefore we have proposed a system where encryption is done prior to the image compression. Here we have considered both the types of compression -Lossless and Lossy compression. Compression is done in the prediction domain where experts find out the prediction error of each pixel then encryption is applied on them by random permutation. Prediction domain provides the high level of security. Most of the existing ETC solutions induce significant penalty on the compression efficiency. In this paper we are proposing a new approach named as “Enhancing image security by prediction error clustering and random permutation.� where compression is applied on the clusters of encrypted image So image received at the receiver end has all the characteristics of original image.