A joint multiple description-encryption image algorithm

This paper describes a new kind of use for secure image transmission. A stream encryption method is presented, in which a key allows the authorized users to recover the original image. Our algorithm exploits the redundancy properties of the Mojette transform. Anyone whom knows the appropriate key will be able to decode the original image whereas only a scrambled image can be decoded without this key. This data access scheme is moreover perfectly suited for a multiple description context. This method takes into account the regions of interest (ROI), according to the received data, the image decoding is first performed in order to recover these ROIs.