JPEG2000 Images Protection Sent to Mobile Devices

With the increasing use of multimedia technologies and mobile devices, also increases the applications which purpose is to offer information or to do advertising by means of the sending of images or videos. In this paper, we approach a digital tourist guide scene in which mobile devices with limited resources need to receive multimedia information across a wireless connection. Also we approached that this information is visible only authorized users. We centre the article on the protection of images by adapted format of compression. Standard JPEG 2000 has been selected to offer an optimal balance between the quality of image and the occupied space. In order to protect the information, we have worked with selective encryption mechanism, that allow to obtain a relation of commitment between the computational cost, on having concealed the information and the concealment degree.