Advanced Applications: Multiple overlapping EROS-B Images. A Multiple Image is comprised of more than two overlapping EROS-B Basic Images of the same scene, acquired at the same pass. The technical specifications of each single image are identical to the specifications of the Basic Image Product. However, the length of the images is limited in order to allow the scanning of all overlapping images in the same pass. Multiple Images can be used for advanced applications, for example change detection, as shown in the images below. Different colors show the movement of the same vessel.