Designing an Efficient Image Encryption-Then- Compression System via Prediction Error Clustering and Random Permutation
Abstract of Designing an Efficient Image Encryption-Then- Compression System
In this paper,we have designed an efficient image Encryption-then-Compression (ETC) system.
Within the proposed framework, the image encryption has been achieved via prediction error clustering and random permutation.
Highly efficient compression of the encrypted data has then been realized by a context-adaptive arithmetic coding approach. Both theoretical and experimental results have shown that reasonably high level of security has been retained.
More notably, the coding efficiency of our proposed compression method on encrypted images is very close to that of the state-of-the-art lossless/lossy image codecs, which receive original, unencrypted images as inputs