Preface of the Book
Nowadays, approximately four TB of image data are collected daily by instruments mounted on satellite platforms, not to mention the data produced by a myriad of specific campaigns carried out through airborne instruments. Very high-resolution (VHR) multispectral scanners, IKONOS, QuickBird, GeoEye,WorldView, Pl ́eiades, just to mention the most popular, and especially the related monospectral panchromatic instruments are responsible for a large part of the amount.