This paper may deals with the diverse troubles that may be occurs during the irretrievable compression applied on an encrypted image. This work is a relative learn with different methods of irretrievable compression such as Compressive sensing technique and Iterative reconstruction technique on encrypted image. But they practiced a variety of limitations. The major obscurity is to attain a higher compression ratio as well as the better quality of the reconstructed image. The higher compression ratio and the smoother the original image may supply the better quality of the reconstructed image.
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